CASE 721F TIER 4 WHEEL LOADER Service Repair Manual Instant Download

1
621F 721F Tier 4 Wheel Loader
from PIN NBF213602 and above
SERVICE MANUAL
Part number 84605841 1st edition English May 2012
2
Contents INTRODUCTION Engine.....................
..................................................
................ 10 Engine and crankcase. . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . 10.001 Air cleaners
and lines. . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
10.202 Engine lubrication system . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 10.304 Aftercooler . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
10.310 Engine cooling system . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 10.400 Fan and drive . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . .
10.414 Selective Catalytic Reduction (SCR)
exhaust treatment . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . 10.500 Engine
generic sub-group . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .
10.AAA Transmission...............................
...............................................
21 Powershift transmission . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 21.113 Powershift transmission external
controls . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . 21.135 Powershift transmission internal
components . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
21.155 Four-Wheel Drive (4WD) system
..................................................
23 Drive shaft . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . 23.314 Front axle
system ...........................................
............................ 25 Powered front
axle . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
25.100 Front bevel gear set and differential . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . 25.102 Final drive hub, steering knuckles,
and shafts . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
25.108 Rear axle system...........................
.............................................
27 Powered rear axle . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 27.100 Rear bevel gear set and
differential . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . 27.106 Planetary and final
drives. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . 27.120 Brakes
and controls .....................................
............................... 33 Hydraulic
service brakes . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .
33.202 Hydraulic systems..........................
............................................. 35
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Hydraulic systems . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 35.000 Variable displacement pump . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . 35.106 Pilot system. . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .
35.357 Main control valve . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . 35.359 Auxiliary hydraulic
valves and lines . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . 35.525 Front loader arm
hydraulic system . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . 35.701 Steering.......
..................................................
............................ 41 Auxiliary
steering . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . 41.910 Wheels...............................
..................................................
..... 44 Front wheels . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . 44.511 Cab climate
control ..........................................
........................... 50 Air conditioning
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
50.200 Electrical systems.........................
..............................................
55 Electrical system . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . 55.000 Fuel tank system . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .
55.011 Engine cooling system . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 55.012 Engine control system . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . 55.015 Service
brake electrical system . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . .
55.030 Parking brake electrical system . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . 55.031 Hydraulic system control . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . 55.036 Steering control system
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . 55.047 Heating,
Ventilation, and Air-Conditioning (HVAC) control
system . . . . . . . . . . . . . . . . . . . . .
. . 55.050 Cab Heating, Ventilation, and
Air-Conditioning (HVAC) controls . . . . . . . .
. . . . . . . . . . . . . . . . . 55.051
Harnesses and connectors . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. 55.100 Engine starting system . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 55.201 Cold start aid . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
55.202 Alternator . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . 55.301 Battery . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 55.302 External lighting . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . 55.404
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External lighting switches and relays . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .
55.405 Warning indicators, alarms, and
instruments . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. 55.408 Loader arm and bucket control system. .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
55.415 Cab/Platform harnesses and connectors. . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . 55.510
Cab controls . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . 55.512 Cab lighting . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
55.514 Wiper/Washer system . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 55.518 Cab brake controls . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . 55.519 Cab
controls (Lift arm, Boom, Dipper, Bucket) . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . 55.524 Selective
Catalytic Reduction (SCR) electrical system. . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 55.988 FAULT CODES . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . 55.DTC Platform,
cab, bodywork, and decals ........................
..................... 90 Pneumatically-adjusted
operator seat . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . 90.124 Cab . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . 90.150
84605841 14/05/2012
6
INTRODUCTION
84605841 14/05/2012 1
7
Contents INTRODUCTION
Torque 621F Torque Specifications . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . 3 621F WE, 621F NA Torque 721F Torque
Specifications . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . 5 721F WE, 721F
NA Capacities . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . 7 621F WE,
621F NA, 721F WE, 721F NA Consumables - Biodiesel
Fuel . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . 12 Hydraulic
contamination . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . 13
84605841 14/05/2012 2
8
INTRODUCTION Torque 621F Torque
Specifications 621F WE, 621F NA Axle
Wheel mounting nuts Front axle mounting
bolts Rear axle trunnion pin bolts
640 - 720 Nm (472 - 531 lb ft) 651 - 678 Nm
(480 - 500 lb ft) 325 - 353 Nm (240 - 260 lb ft)
Chassis
Cab mounts Exhaust stack to hood Counterweight
mounting bolts Articulation pivot pin bolts
Articulation mount pin retainer bolts Seat
mounting bolts Steering wheel retaining nut
Hydraulic oil filter mounting bolts Steering
cylinder base end pin retaining bolt Steering
cylinder rod end pin retaining bolt Horn
mounting bolt Hood - rear grill bolts Hood hinge
bolts Steps - lower entry strap bolts
773 - 854 Nm (570 - 630 lb ft) 36 - 44 Nm (27 -
32 lb ft) 955 - 1075 Nm (704 - 793 lb ft) 224 -
278 Nm (165 - 205 lb ft) 69 Nm (51 lb ft) 73 -
87 Nm (54 - 64 lb ft) 50 Nm (37 lb ft) 23 - 27
Nm (17 - 20 lb ft) 290 - 375 Nm (214 - 277 lb
ft) Bolts must turn freely 53 - 62 Nm (39 - 46
lb ft) 9 - 11 Nm (7 - 8 lb ft) 65 - 79 Nm (48 -
58 lb ft) 27 - 31 Nm (20 - 23 lb ft)
Cooling
Fan to fan hub Fan hub to motor shaft (no impact
tools) Radiator hose clamps Hydraulic tank cover
nuts Hydraulic tank sight gauge
40 - 48 Nm (30 - 35 lb ft) 67 - 74 Nm (49 - 55
lb ft) 10.1 - 11.3 Nm (7.4 - 8.3 lb ft) 14 - 18
Nm (10 - 13 lb ft) 2.7 - 5.5 Nm (2.0 - 4.1 lb
ft)
Diesel Exhaust Fluid (DEF) System
Heater valve bolts Dosing module bolts DEF
control module/pump assembly mounting bolts
17 - 19 Nm (13 - 14 lb ft) 7 - 8 Nm (58 - 68 lb
in) 20 - 28 Nm (15 - 21 lb ft)
Driveshafts
Coupling to flywheel Driveshaft to coupling
Front driveshaft yoke nut Carrier bearing
mounting bolts 550R U-joints 410R U-joints Dust
cover mounting bolts
53 - 62 Nm (39 - 46 lb ft) 53 - 62 Nm (39 - 46
lb ft) 339 - 373 Nm (250 - 275 lb ft) 99 - 128
Nm (73 - 94 lb ft) 75 - 81 Nm (55 - 60 lb
ft) 61 - 81 Nm (45 - 60 lb ft) 20 - 27 Nm (15 -
20 lb ft)
84605841 14/05/2012 3
9
INTRODUCTION
Engine
Engine mounting brackets Engine rubber isolator
mounts (Qty 4) Brake pump to engine mounting
Brake pump gear nut (no impact tools) Turbo to
turbo exhaust elbow clamp Muffler to turbo elbow
exhaust clamp Front muffler bracket to engine
block Muffler brackets to muffler Charge Air
Cooler (CAC) hose clamps (Qty 8) Air cleaner to
turbo hose clamp Alternator pulley (no impact
tools) Starter mounting nuts
118 - 133 Nm (87 - 98 lb ft) 244 - 298 Nm (180
- 220 lb ft) 57 - 65 Nm (42 - 48 lb ft) 70 - 79
Nm (52 - 58 lb ft) 5 Nm (4 lb ft) 20 - 25 Nm
(15 - 18 lb ft) 118 - 133 Nm (87 - 98 lb ft) 114
- 128 Nm (84 - 94 lb ft) 10.1 - 11.3 Nm (7.4 -
8.3 lb ft) 10.1 - 11.3 Nm (7.4 - 8.3 lb ft) 60 -
70 Nm (44 - 52 lb ft) 40 - 50 Nm (30 - 37 lb ft)
Loader
XT loader linkage bolts XT guide link nuts
Loader link pin keeper
650 - 732 Nm (479 - 540 lb ft) 240 - 305 Nm
(177 - 225 lb ft) 325 - 373 Nm (240 - 275 lb ft)
Transmission
Transmission rubber isolator mounts (Qty 3)
Transmission upper mounting bracket bolts
Transmission lower mounting bracket bolts (Qty 2)
Hydraulic pump to transmission mounting Cooler
clamps Hydraulic pump suction hose clamp flange
Steering priority manifold to pump Transmission
fill tube bolts Transmission sight gauge bolts
890 - 1000 Nm (656 - 738 lb ft) 251 - 319 Nm
(185 - 235 lb ft) 481 - 590 Nm (355 - 435 lb
ft) 335 - 375 Nm (247 - 277 lb ft) 10.1 - 11.3
Nm (7.4 - 8.3 lb ft) 73 - 90 Nm (54 - 66 lb
ft) 37 - 48 Nm (27 - 35 lb ft) 17 - 33 Nm (13 -
24 lb ft) 2.7 - 5.5 Nm (2 - 4 lb ft)
Wheels
Initial torque 298 Nm (220 lb ft) Final torque
640 - 720 Nm (472 - 531 lb ft)
Wheel nuts

• RCPH10WHL320AAH 1
• Do the following initial and final torque
  procedures
• Tighten wheel nuts to an initial torque of 298
  Nm (220 lb ft) in sequence shown in figure
• Tighten wheel nuts to a final torque of 640 - 720
  Nm (472 - 531 lb ft). in sequence shown in figure

84605841 14/05/2012 4
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INTRODUCTION Torque 721F Torque
Specifications 721F WE, 721F NA Axle
Wheel mounting bolts Front axle mounting bolts
Rear axle trunnion pin bolts
640 - 720 Nm (472 - 531 lb ft) 765 - 855 Nm
(564 - 631 lb ft) 651 - 678 Nm (480 - 500 lb ft)
Chassis
Cab mounts Exhaust stack to hood Counterweight
mounting bolts Articulation pivot pin bolts
Articulation mount pin retainer bolts Seat
mounting bolts Steering wheel retaining nut
Hydraulic oil filter mounting bolts Steering
cylinder base end pin retaining bolt Steering
cylinder rod end pin retaining bolt Horn
mounting bolt Hood - rear grill bolts Hood hinge
bolts Steps - lower entry strap bolts
773 - 854 Nm (570 - 630 lb ft) 36 - 44 Nm (27 -
32 lb ft) 955 - 1075 Nm (704 - 793 lb ft) 224 -
278 Nm (165 - 205 lb ft) 69 Nm (51 lb ft) 73 -
87 Nm (54 - 64 lb ft) 50 Nm (37 lb ft) 23 - 27
Nm (17 - 20 lb ft) 290 - 375 Nm (214 - 277 lb
ft) Bolts must turn freely 53 - 62 Nm (39 - 46
lb ft) 9 - 11 Nm (7 - 8 lb ft) 65 - 79 Nm (48 -
58 lb ft) 27 - 31 Nm (20 - 23 lb ft)
Cooling
Fan to fan hub Fan hub to motor shaft (no impact
tools) Radiator hose clamps Hydraulic tank cover
nuts Hydraulic tank sight gauge
40 - 48 Nm (30 - 35 lb ft) 67 - 74 Nm (49 - 55
lb ft) 10.1 - 11.3 Nm (7.4 - 8.3 lb ft) 14 - 18
Nm (10 - 13 lb ft) 2.7 - 5.5 Nm (2.0 - 4.1 lb
ft)
Diesel Exhaust Fluid (DEF) System
Heater valve bolts Dosing module bolts DEF
control module/pump assembly mounting bolts
17 - 19 Nm (13 - 14 lb ft) 7 - 8 Nm (58 - 68 lb
in) 20 - 28 Nm (15 - 21 lb ft)
Driveshafts
Coupling to flywheel Driveshaft to coupling
Front driveshaft yoke nut Carrier bearing
mounting bolts 550R U-joints Dust cover mounting
bolts Flex plate to flywheel bolts Carrier
bearing bolt Drive line mounting bolts
53 - 62 Nm (39 - 46 lb ft) 53 - 62 Nm (39 - 46
lb ft) 339 - 373 Nm (250 - 275 lb ft) 99 - 128
Nm (73 - 94 lb ft) 75 - 81 Nm (55 - 60 lb
ft) 20 - 27 Nm (15 - 20 lb ft) 33 - 41 Nm (24 -
30 lb ft) 150 - 164 Nm (111 - 121 lb ft) 136 -
149 Nm (100 - 110 lb ft)
84605841 14/05/2012 5
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INTRODUCTION
Engine
Engine mounting brackets Engine rubber isolator
mounts (Qty 4) Brake pump to engine mounting
Brake pump gear nut (no impact tools) Turbo to
turbo exhaust elbow clamp Muffler to turbo elbow
exhaust clamp Muffler bracket to muffler Charge
Air Cooler (CAC) hose clamps (Qty 8) Air cleaner
to turbo hose clamp Alternator pulley (no impact
tools) Starter mounting nuts
118 - 133 Nm (87 - 98 lb ft) 244 - 298 Nm (180
- 220 lb ft) 57 - 65 Nm (42 - 48 lb ft) 70 - 79
Nm (52 - 58 lb ft) 5 Nm (4 lb ft) 20 - 25 Nm
(15 - 18 lb ft) 114 - 128 Nm (84 - 94 lb
ft) 10.1 - 11.3 Nm (7.4 - 8.3 lb ft) 10.1 - 11.3
Nm (7.4 - 8.3 lb ft) 60 - 70 Nm (44 - 52 lb
ft) 40 - 50 Nm (30 - 37 lb ft)
Loader
XT loader linkage bolts XT guide link nuts
Loader link pin keeper
650 - 732 Nm (479 - 540 lb ft) 240 - 305 Nm
(177 - 225 lb ft) 325 - 373 Nm (240 - 275 lb ft)
Transmission
Transmission rubber isolator mounts (Qty 3)
Transmission upper mounting bracket bolts
Transmission lower mounting bracket bolts (Qty 2)
Cooler clamps Hydraulic pump suction hose clamp
flange Steering priority manifold to pump
Transmission fill tube bolts Transmission sight
gauge bolts
890 - 1000 Nm (656 - 738 lb ft) 251 - 319 Nm
(185 - 235 lb ft) 481 - 590 Nm (355 - 435 lb
ft) 10.1 - 11.3 Nm (7.4 - 8.3 lb ft) 73 - 90 Nm
(54 - 66 lb ft) 37 - 48 Nm (27 - 35 lb ft) 17 -
33 Nm (13 - 24 lb ft) 2.7 - 5.5 Nm (2 - 4 lb ft)
Wheels
Initial torque 298 Nm (220 lb ft) Final torque
640 - 720 Nm (472 - 531 lb ft)
Wheel bolts

• RCPH10WHL320AAH 1
• Do the following initial and final torque
  procedures
• Tighten wheel bolts to an initial torque of 298
  Nm (220 lb ft) in sequence shown in figure
• Tighten wheel bolts to a final torque of 640 -
  720 Nm (472 - 531 lb ft). in sequence shown in
  figure

84605841 14/05/2012 6
12
INTRODUCTION
Capacities 621F WE, 621F NA, 721F WE, 721F
NA 621F Capacities and Specifications Engine
Type of oil Capacity (with filter change) Total
system capacity
CASE AKCELA ENGINE OIL 15W-40 13.25 l (14.0 US
qt) 15.1 l (16 US qt)
Cooling System
System capacity
26.8 l (28.4 US qt)
Hydraulic System
CASE AKCELA HY-TRAN ULTRA HYDRAULIC
TRANSMISSION OIL 147.6 l (39.0 US gal) 90.8 l
(24.0 US gal)
Type of fluid
Total system capacity Reservoir capacity
Fuel System
System capacity
246 l (65.0 US gal)
Transmission
Type of oil Service capacity (with filter change)
CASE AKCELA NEXPLORE FLUID 26.7 l (28.2 US qt)
Axles
Type of oil Standard front axle Standard rear
axle Optional front axle Optional rear axle
CASE AKCELA NEXPLORE FLUID 22 l (23.2 US qt) 22
l (23.2 US qt) 35 l (37.0 US qt) 35 l (37.0 US qt)
Diesel Exhaust Fluid (DEF)
Total capacity
41.3 l (10.9 US gal)
Grease Fittings As required CASE AKCELA MOLY
GREASE NOTE Machines are shipped from the
factory with break-in oil.
84605841 14/05/2012 7
13
INTRODUCTION
721F Capacities and Specifications Engine
Type of oil Capacity (with filter change) Total
system capacity
CASE AKCELA ENGINE OIL 15W-40 13.25 l (14.0 US
qt) 15.1 l (16 US qt)
Cooling System
System capacity
28.4 l (30.0 US qt)
Hydraulic System
CASE AKCELA HY-TRAN ULTRA HYDRAULIC
TRANSMISSION OIL 177.8 l (47.0 US gal) 90.8 l
(24.0 US gal)
Type of fluid
Total system capacity Reservoir capacity
Fuel System
System capacity
253 l (66.8 US gal)
Transmission
Type of oil Service capacity (with filter change)
CASE AKCELA NEXPLORE FLUID 34 l (35.9 US qt)
Axles
Type of oil Standard front axle Standard rear
axle Optional front axle Optional rear axle
CASE AKCELA NEXPLORE FLUID 35 l (37.0 US qt) 23
l (24.3 US qt) 35 l (37.0 US qt) 35 l (37.0 US qt)
Diesel Exhaust Fluid (DEF)
Total capacity
41.3 l (10.9 US gal)
Grease Fittings As required CASE AKCELA MOLY
GREASE NOTE Machines are shipped from the
factory with break-in oil.
84605841 14/05/2012 8
14
INTRODUCTION Engine Oil Viscosity/Temperature
Range
RCPH11WHL023FAH 1
NOTE Use of an engine oil pan heater or an
engine coolant heater may be required when
operating temperatures are in Winter or Arctic
conditions. Transmission Oil Viscosity/Temperatur
e Range
RCPH10WHL453BAH 2
84605841 14/05/2012 9
15
INTRODUCTION Hydraulic/Brake System Temperature
Range
RCPH10WHL006EAL 3
Coolant Solution Only use ethylene-glycol coolant
solution in the cooling system. Use good quality
ethylene-glycol that has a high boiling point
with no additives to prevent leakage. Do not use
non-approved anti-rust additives. NOTICE
Anti-rust additives and ethylene-glycol can mix
and work against each other, reducing
anti-corrosion pro- tection, forming deposits in
the cooling system, and causing damage to the
cooling system and radiator. Contact your dealer
who can supply you with the suitable coolant
solution. Anti-freeze/Anti-corrosion Use
anti-freeze in all seasons to protect the cooling
system from corrosion and risk of freezing. For
areas where the ambient temperature is over -36
C (-32.8 F) use a blend of 50 ethylene-glycol
based anti-freeze. For areas where the
temperature is below -36 C (-32.8 F)- it is
advisable to use a blend of 40 water and 60
anti-freeze. Fuel
Use diesel fuel suitable for the ambient
temperature conditions (ASTM-D-975). Use fuel
which is to ASTM (American Society for Testing
and Materials) D975 standard. Use grade No. 2
fuel. The use of other types of fuel can result
in a loss of power of the engine and may cause

high fuel consumption. For very low ambient
temperatures, use a mixture of fuels No. 1 and
No. 2 as necessary. Consult your fuel supplier
for appropriate fuel supply. If the temperature
falls below the fuel cloud point (point at which
wax begins to form, the wax crystals will cause
power loss or will prevent the engine from
starting. In cold weather, fill the fuel tank at
the end of the day's work in order to prevent the
formation of condensation.



Fuel Storage Prolonged storage of fuel can lead
to the accumulation of impurities and
condensation in the fuel. Engine trouble can
often be traced to the presence of water in the
fuel. The storage tank must be placed outside
and the temperature of the fuel should be kept as
low as possible. Drain off water and impurities
regularly.
84605841 14/05/2012 10
16
INTRODUCTION Hydraulic Fluid CASE AKCELA
HY-TRAN ULTRA HYDRAULIC TRANSMISSION OIL is
specifically designed for high pressure applica-
tions and for Case hydraulic systems. Your Case
Dealer can provide hydraulic fluid to fulfill
different climate/temper- ature conditions.
Refer to the charts at the beginning of this
section. Transmission Component Oil Extreme
pressure oil should be used for enclosed
transmission components. Choose an oil that is
manufactured for your climate/temperature
conditions such as CASE AKCELA NEXPLORE FLUID.
See charts at the beginning of this
section. Grease The type of grease to use
depends on ambient temperature such as CASE
AKCELA MOLY GREASE. Environment Before servicing
machine and disposing oil, fluids, and
lubricants, follow all environmental regulations.
Do not drain oil or fluids on to the ground or
into containers that leak. Check with your local
environmental recycling center or your dealer
for correct disposal information. Engine Oil CASE
AKCELA ENGINE OIL 15W-40 is recommended for your
engine. This oil insures correct lubrication of
your en- gine in all working conditions. See
charts at the beginning of this section to
choose the correct oil for climate/temper-
atures.
If CASE AKCELA ENGINE OIL 15W-40 cannot be
obtained, use only oil of the API SERVICE CI-4
category. NOTE Do not put any Performance
Additive or other ad- ditive in the sump. Oil
change intervals shown in this man- ual are
based on tests carried out utilizing Case
lubricants.
RCPH10WHL012AAD 4
84605841 14/05/2012 11
17
INTRODUCTION Consumables - Biodiesel Fuel Fatty
Acid Methyl Ester Biodiesel (Biodiesel Fuel)
consists of a family of fuels derived from
vegetable oils treated with methyl
esters. NOTICE Biodiesel fuel blends are
approved for your engine only if they comply with
Specification Standards EN 14214 or ASTM
D6751. NOTICE Verify with your local dealer
which blends are approved for your engine. Use of
biodiesel fuel that does not comply with the
Standards EN14214 or ASTM D6751 could lead to
severe damage to engine and fuel system. Use of
non-approved biodiesel fuels may void warranty
coverage. Biodiesel Fuel Usage
Conditions Biodiesel fuels must be purchased from
a trusted supplier that understands the product
and maintains good fuel quality. Biodiesel fuels
must be pre-blended by the supplier. Mixing
biodiesel fuels on site can result in an
incorrect mixture which can damage engine and
fuel system. Engine performance is effected by
the use of biodiesel fuels. There may be up to 12
percent reduction in power or torque depending
on the blend used. NOTICE DO NOT modify the
engine and/or fuel injection pump settings to
recover reduced performance. The reduced power
must be accepted if using any biodiesel fuel
blends. NOTICE The use of high biodiesel fuel
blends is not recommended in cold weather
conditions. Using biodiesel fuels may require
changing engine oil, engine oil filters, and fuel
filter elements more frequently. Biodiesel fuels
can remove rust and other particles that adhere
to the inside of the fuel tank. These particles
are trapped by vehicle filters and may cause
shortened filter life or filter blockages.
Blockages are more common in cold weather
conditions. Consult your dealer for information
on cold weather operation and proper maintenance
intervals when using any biodiesel fuel
blend. Biodiesel fuel may degrade natural rubber
gaskets and hoses, as it is more solvent than
petro-diesel. Frequently inspect hoses and other
engine components when using biodiesel fuel. DO
NOT allow water to collect in the fuel or storage
tanks. Biodiesel fuel attracts moisture from the
atmosphere. Keep fuel tanks and storage tanks as
full as possible to limit the amount of air and
water vapors. It may be necessary to drain
machine fuel filter more frequently. Potential
oxidation and stability could create a problem
with fuel stored in the machine. Biodiesel
Storage NOTICE DO NOT store machines for more
than three months with biodiesel blends in the
fuel system. DO NOT store biodiesel fuel in
on-site storage tanks for more than three
months. If long periods of storage are required,
run the machine for 20 hours using regular diesel
fuel to flush the biodiesel fuel from the engine
fuel system. NOTICE Biodiesel fuels must not be
stored in on-site storage tanks for more than 3
months. Any spillage of biodiesel fuels must be
cleaned up immediately before it can cause damage
to the environment or the paint finish of the ma-
chine. Before using biodiesel fuel blends, you
should consult with your dealer to receive full
information about the approved blend for your
machine and any detailed conditions of its usage.
Failure to follow the requirements and
conditions of biodiesel fuel usage will void your
machines warranty. NOTE B7 is the highest
biodiesel (7 blend) that should be used in this
machine.
84605841 14/05/2012 12
18

• INTRODUCTION
• Hydraulic contamination
• Contamination in the hydraulic system is a major
  cause of the malfunction of hydraulic components.
  Contamination is any foreign material in the
  hydraulic oil. Contamination can enter the
  hydraulic system in several ways.
• When you drain the oil or disconnect any line.
• When you disassemble a component.
• From normal wear of the hydraulic components.
• From damaged or worn seals.
• From a damaged component in the hydraulic system.
• All hydraulic systems operate with some
  contamination. The design of the components in
  this hydraulic system per- mits efficient
  operation with a small amount of contamination.
  An increase in this amount of contamination can
  cause problems in the hydraulic system. The
  following list includes some of these problems.
• Cylinder rod seals leak.
• Control valve spools do not return to neutral.
• Movement of control valve spools is difficult.
• Hydraulic oil becomes too hot.
• Pump gears, housing, and other parts wear
  rapidly.
• Relief valves or check valves held open by dirt.
• Quick failure of components that have been
  repaired.

84605841 14/05/2012 13
19
CONSUMABLES INDEX
Consumable IU PAGE
CASE Akcela Engine oil 15W-40 Capacities 7
CASE Akcela HY-TRAN Ultra hydraulic transmission oil Capacities 7
CASE Akcela NEXPLORE fluid Capacities 7
CASE Akcela NEXPLORE fluid Capacities 7
CASE Akcela Moly grease Capacities 7
CASE Akcela Engine oil 15W-40 Capacities 8
CASE Akcela HY-TRAN Ultra hydraulic transmission oil Capacities 8
CASE Akcela NEXPLORE fluid Capacities 8
CASE Akcela NEXPLORE fluid Capacities 8
CASE Akcela Moly grease Capacities 8
CASE Akcela HY-TRAN Ultra hydraulic transmission oil Capacities 11
CASE Akcela NEXPLORE fluid Capacities 11
CASE Akcela Moly grease Capacities 11
CASE Akcela Engine oil 15W-40 Capacities 11
CASE Akcela Engine oil 15W-40 Capacities 11
84605841 14/05/2012 14
20
SERVICE MANUAL Engine
621F 721F
84605841 14/05/2012 10
21
Contents Engine - 10
Engine and crankcase. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 621F , 721F 10.001
Air cleaners and lines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 621F , 721F 10.202
Engine lubrication system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 621F , 721F 10.304
Aftercooler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 621F , 721F 10.310
Engine cooling system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 621F , 721F 10.400
Fan and drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 621F , 721F 10.414
Selective Catalytic Reduction (SCR) exhaust treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 621F NA, 621F WE, 721F NA, 721F WE 10.500
Engine generic sub-group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 621F , 721F 10.AAA
84605841 14/05/2012 10
22
CONSUMABLES INDEX
Consumable IU PAGE
DEF/AdBlue Engine - Remove 10.001 / 22
DEF/AdBlue Engine - Remove 10.001 / 22
DEF/AdBlue Engine - Remove 10.001 / 23
DEF/AdBlue Engine - Remove 10.001 / 23
DEF/AdBlue Engine - Remove 10.001 / 23
DEF/AdBlue Engine - Install 10.001 / 33
DEF/AdBlue Engine - Install 10.001 / 33
DEF/AdBlue Engine - Install 10.001 / 34
DEF/AdBlue Engine - Install 10.001 / 34
DEF/AdBlue Engine - Install 10.001 / 35
CASE Akcela Engine oil 15W-40 Engine - Install 10.001 / 50
Loctite 242 Radiator - Install 10.400 / 16
DEF/AdBlue Diesel Exhaust Fluid 10.500 / 20
DEF/AdBlue Diesel Exhaust Fluid 10.500 / 20
DEF/AdBlue Diesel Exhaust Fluid 10.500 / 20
DEF/AdBlue Diesel Exhaust Fluid 10.500 / 21
DEF/AdBlue Diesel Exhaust Fluid 10.500 / 21
DEF/AdBlue Diesel Exhaust Fluid 10.500 / 21
DEF/AdBlue Diesel Exhaust Fluid 10.500 / 22
DEF/AdBlue Diesel Exhaust Fluid 10.500 / 22
DEF/AdBlue Diesel Exhaust Fluid 10.500 / 24
DEF/AdBlue Diesel Exhaust Fluid 10.500 / 24
DEF/AdBlue Diesel Exhaust Fluid 10.500 / 25
DEF/AdBlue Diesel Exhaust Fluid 10.500 / 25
DEF/AdBlue Diesel Exhaust Fluid 10.500 / 26
DEF/AdBlue Diesel Exhaust Fluid 10.500 / 27
DEF/AdBlue Diesel Exhaust Fluid 10.500 / 27
DEF/AdBlue Coolant control valve - Remove 10.500 / 29
DEF/AdBlue Coolant control valve - Remove 10.500 / 29
DEF/AdBlue Coolant control valve - Install 10.500 / 31
84605841 14/05/2012 10
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84605841 14/05/2012 10
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Engine - 10 Engine and crankcase - 001
621F 721F
84605841 14/05/2012 10.001 / 1
25
Contents Engine - 10 Engine and crankcase - 001
SERVICE Engine Remove . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . 4 Install .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 28
84605841 14/05/2012 10.001 / 2
26
CONSUMABLES INDEX
Consumable IU PAGE
DEF/AdBlue Engine - Remove 10.001 / 22
DEF/AdBlue Engine - Remove 10.001 / 22
DEF/AdBlue Engine - Remove 10.001 / 23
DEF/AdBlue Engine - Remove 10.001 / 23
DEF/AdBlue Engine - Remove 10.001 / 23
DEF/AdBlue Engine - Install 10.001 / 33
DEF/AdBlue Engine - Install 10.001 / 33
DEF/AdBlue Engine - Install 10.001 / 34
DEF/AdBlue Engine - Install 10.001 / 34
DEF/AdBlue Engine - Install 10.001 / 35
CASE Akcela Engine oil 15W-40 Engine - Install 10.001 / 50
84605841 14/05/2012 10.001 / 3
27
Engine - Engine and crankcase Engine -
Remove NOTE Emissions sensors mounted in the
exhaust stream are sensitive to extreme
vibrations. Use of tools that gen- erate extreme
vibrations, such as impact wrenches and hammers,
will result in damage to emission sensors. Avoid
using these tools during any service procedure in
close proximity of emission sensors. If the use
of these tools cannot be avoided, remove the
sensors using extreme caution prior to performing
any service procedure. 1. Park machine on a
level surface and lower the bucket to the
ground. Put articulation lock in LOCKED posi-
tion and stop the engine.
RCPH10WHL063BAL 1
2. Actuate the brake pedal several times to
discharge brake accumulators.
RCPH10WHL435AAH 2
3. Put key switch in ON position. Pilot control
switch must be in the ON position and then move
loader control lever(s) back and forth at least
30 times to release any pressure from hydraulic
circuit. Put key switch in OFF position.
RCPH10WHL119BAL 3
84605841 14/05/2012 10.001 / 4
28
Engine - Engine and crankcase
4. Raise grill located above the cooler box just
behind the cab. Then slowly loosen the hydraulic
reservoir filler cap to release pressure in the
reservoir.
RCPH10WHL099BAL 4
5. Locate the master and hood raise switch by the
bat- tery box. Then raise the hood and put the
master disconnect switch in the OFF position.
RCPH10WHL106AAH 5
6. Raise both side panels (1). Then remove the
thumb screws (2) and inner fender panels
(3). NOTE Left side of the machine is shown. The
operation is similar for the right side.
RAPH12WEL0597AA 6
7. Place a suitable container below radiator
drain, re- move radiator cap and coolant drain
plug (arrow) to drain engine coolant. Then
reinstall drain plug and radiator cap after
coolant has drained. NOTE See machine
specifications for cooling system vol- ume.
RCPH10WHL054BAL 7
84605841 14/05/2012 10.001 / 5
29
Engine - Engine and crankcase
8. Place a suitable container below engine oil
drain. Remove drain plug and drain oil into
container. Then reinstall drain plug. NOTE See
machine specifications for engine oil sump vol-
ume.
RCPH10WHL054BAL 8
9. After oil drains, disconnect drain hose from
frame by removing jam nut (1). Then pull hose
from frame in preparation for engine removal. (2)
RAPH12WEL0598AA 9
10. Double up a nylon lifting strap (1) and slide
through the exhaust stack (2) on the hood.
RAPH12WEL0599AA 10
84605841 14/05/2012 10.001 / 6
30
Engine - Engine and crankcase
11. Place a bar or pipe through the strap loop
inside the hood and attach the strap to a
suitable lifting device. Then raise the hood
with the strap to release tension on the lifting
motor.
RAPH12WEL0600AA 11
12. Tag and disconnect the camera wire harness
(if ma- chine is equipped with a camera.)
RAPH12WEL0601AA 12
13. Cut wire ties and remove camera wire harness
from hood. Then place it off to the side in a
safe location. (If machine is equipped with a
camera.)
RAPH12WEL0602AA 13
84605841 14/05/2012 10.001 / 7
31
Engine - Engine and crankcase
14. Remove mount bolt (1) and backup alarm wiring
har- ness clamp from cooler housing. Then tag
and re- move hood ground wire (2) from cooler
housing.
RAPH12WEL0603AA 14
15. Tag and disconnect hood wiring harness
connector from rear chassis wiring harness
connector.
RAPH12WEL0604AA 15
16. Have another person balance the hood and
LOOSEN the hood hinge mounting bolts (arrows)
from the cooler frame. NOTE Do not remove the
hood hinge mounting bolts at this time.
RAPH12WEL0605AA 16
84605841 14/05/2012 10.001 / 8
32
Engine - Engine and crankcase
17. Remove the pin from the bottom of the lifting
motor cylinder where it attaches to the loader
frame.
RAPH12WEL0606AA 17
18. Put the master disconnect switch in the ON
position. Then, retract the lifting motor
cylinder (2), replace pin and disconnect wiring
harness (1).
RAPH12WEL0062AA 18
19. Put master disconnect switch (1) in OFF
position. Remove the battery cover and
disconnect ground lead from the batteries (2).
You may replace battery cover if desired to give
you a place to stand.
RAPH12WEL0608AA 19
84605841 14/05/2012 10.001 / 9
33
Engine - Engine and crankcase
20. Have another person balance the hood and
remove the hood hinge mounting bolts (arrows)
from the cooler frame.
RAPH12WEL0605AA 20
21. Carefully raise and remove hood from loader.
Lower hood onto suitable platform and disconnect
lifting equipment. NOTE Radiator overflow hose
may interfere with left hand hood hinge movement
and hood removal.
RAPH12WEL0609AA 21
22. Tag and disconnect engine wiring harness
connector from air filter restriction switch.
RAPH12WEL0610AA 22
84605841 14/05/2012 10.001 / 10
34
Engine - Engine and crankcase
23. Tag and disconnect engine wiring harness
connector from air inlet humidity sensor.
RAPH12WEL0611AA 23
24. Loosen clamp (1) on the crankcase ventilation
hose (2) and disconnect hose.
RAPH12WEL0612AA 24
25. Loosen clamps on turbocharger and air filter
hous- ing. Then remove the intake air hose.
Cover tur- bocharger inlet to prevent debris
entry.
RAPH12WEL0613AA 25
84605841 14/05/2012 10.001 / 11
35
Engine - Engine and crankcase
26. Loosen the clamp on the turbocharger for the
after cooler inlet elbow.
RAPH12WEL0614AA 26
27. Loosen the clamp on the hose at the after
cooler inlet and remove the tube.
RAPH12WEL0615AA 27
28. Loosen clamp on the air inlet hose at the air
filter housing.
RAPH12WEL0616AA 28
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36
Engine - Engine and crankcase
29. Remove bolts from the cooler box (1) and the
cen- ter support bracket (2) securing the air
inlet hose bracket. Then remove air inlet hose
and bracket.
RAPH12WEL0617AA 29
30. Remove four the bolts securing the air
filter housing to the mounting support bracket.
Then remove air filter housing.
RAPH12WEL0618AA 30
31. Remove the four mounting bolts from the belt
cover. Then remove the cover. NOTE After
removing the belt cover, remove the cover
mounting bracket from the left rear side of
machine frame.
RAPH12WEL0619AA 31
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37
Engine - Engine and crankcase
32. Remove the drive belt from the engine.
RAPH12WEL0620AA 32
33. If loader is equipped with air conditioning,
identify, tag, and disconnect the engine wiring
harness con- nectors from air compressor clutch
connector (1) and high pressure switch (2). Then
remove the three mounting bolts (3) for the
compressor and carefully set it on the left
battery cover.
RAPH12WEL0621AA 33
34. Tag and disconnect the wiring from the
alternator.
RAPH12WEL0622AA 34
84605841 14/05/2012 10.001 / 14
38
Engine - Engine and crankcase
35. Remove SCR coolant return line.
RAPH12WEL0623AA 35
36. Tag and remove the wires from the starter
solenoid (1), the ground cable (2), and ground
strap (3) from the starter. NOTE Move the
starter cables away from the engine.
RAPH12WEL0624AA 36
37. Remove bolts securing wiring harness clamps
to en- gine.
RAPH12WEL0625AA 37
84605841 14/05/2012 10.001 / 15
39
Engine - Engine and crankcase 38. Remove ground
wires from the engine. NOTE Move the wiring
harness away from the engine.
RAPH12WEL0625AA 38
39. If the machine is so equipped, unplug the
engine block heater and set it aside.
RAPH12WEL0626AA 39
40. Loosen the exhaust clamp from the
turbocharger.
RAPH12WEL0627AA 40
84605841 14/05/2012 10.001 / 16
40
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41
Engine - Engine and crankcase
41. Disconnect the engine coolant vent hose from
the engine.
RAPH12WEL0628AA 41
42. Loosen clamps and remove lower coolant hose
from the engine.
RAPH12WEL0629AA 42
43. Remove the radiator hose from the engine.
RAPH12WEL0630AA 43
84605841 14/05/2012 10.001 / 17
42
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