Caterpillar Cat D8K TRACK-TYPE TRACTOR Dozer Bulldozer (Prefix 66V) Service Repair Manual Instant Download (66V00001) 2

1
Service Repair Manual
Models D8K TRACK-TYPE TRACTOR
2
start by a) remove track roller frames 1. Remove
the oil from the final drive case.
3
2. Remove bolts (1) that hold the cap to the
support. Install two 1/2"-13NC forcing screws
into the cap. Remove cap (2) and its shims.
3. Remove the bearing race (3) from the cap with
tooling (A).
4. Remove bolts (5) and lock (6). Remove nut (7)
from the shaft. Remove bearing cone (4) from
bearing cage.
5. Remove bearing cage (8) with tooling (B).
Remove the bearing cup from the bearing cage with
a hammer and punch.
6. Remove key (9) from the shaft. Remove bolts
(11), locks (12), and a lock (10).
4
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7. Remove nut (13) and spacer with tool (C).
Make sure the two 7M9772 Pins are in the correct
positions in tooling (D) before the support is
loosened.
8. Loosen the support and bearing cones from the
sprocket hub with tooling (D).
9. Remove two bearing cones (15) from the shaft.
Fasten a hoist to the support (14) and remove it.
Weight is 120 lb. (54 kg). Remove the Duo-Cone
seal from the support. Remove the bearing cup
from the support with a hammer and punch.
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10. Remove the Duo-Cone seal (16) and spacer (17)
from the sprocket. Keep the Duo-Cone seals for
the sprocket and support together to prevent
mixing at assembly.
7M9772 Pin must be installed between 7M9773 Shaft
Adapter and 7M9774 Adapter Coupling. If 7M9772
Pin is not installed in the correct position,
tooling (E) and the sprocket will come completely
off of the sprocket shaft when the sprocket is
loosened from the taper. This can cause bodily
injury.
11. Loosen the sprocket from the shaft with
tooling (E).
12. Fasten a hoist to the sprocket (19) and
remove it. Weight is 700 lb. (318 kg).
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13. Remove the Duo-Cone seals (18) from the
sprocket and final drive case. Keep the seals
together to prevent mixing at assembly.
Install Sprockets
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1. Make sure the Duo-Cone seals for the final
drive case and sprocket are clean and dry. Make
sure all metal surfaces that the seals make
contact with are clean and dry. Install the
Duo-Cone seals in the final drive case and inner
side of the sprocket with tool (A). Put a light
amount of oil on the metal surfaces of the seals
that make contact with each other.
2. Fasten a hoist to the sprocket (1) and put it
in position on the final drive hub. Make sure the
splines of the sprocket and the hub are in
alignment. Push the sprocket on the hub as far as
possible by hand.
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NOTICE Make sure the splines of the hub and
sprocket are clean and dry.

1. Install tooling (B) on the sprocket shaft.
2. Push the sprocket on the final drive hub with a
   force of 60 to 65 ton (54 to 59 t). Remove
   tooling (B). Measure the distance from the front
   face of the sprocket to the front of the splines
   of the final drive hub. The distance must be .25
   .06 in. (6.4 1.5 mm).

5. Make sure the Duo-Cone seals for the sprocket
and support are clean and dry. Make sure all
metal surfaces with which the seals make contact
are clean and dry. Install the Duo-Cone seals (2)
in the sprocket and support with tool (A). Put a
light amount of oil on the metal surfaces of the
seals that make contact with each other.

1. Install spacer (3) on the hub.
2. Lower the temperature of the bearing cup for the
   support and install it in the support. Fasten a
   hoist to the support (4) and put it in position
   on the hub.
3. Heat the two bearing cones for the support in oil
   to a maximum temperature of 275F (135C).
   Install one of the bearing cones on the hub with
   a hammer and punch far enough to put it in
   alignment with the hub.

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1. Install tooling (C) on the sprocket shaft.
2. Put enough force on the cylinder group to push
   the bearing cone on the hub until it is against
   the spacer. Remove tooling (C).

11. Install the other bearing cone on the hub.
Install spacer (6) and nut (5) on the hub.
12. Tighten the nut with tool (D) until the
second bearing cone is against the first bearing
cone.
13. Tighten or loosen nut (5) until the holes in
the nut and lock (8) are in alignment. Install
locks (10) and bolts (9). Install key (7) in the
sprocket shaft.
11
14. Lower the temperature of the bearing cup for
the bearing cage and install it in the cage. Put
the groove in the bearing cage in alignment with
the key on the sprocket shaft. Install the
bearing cage (11) on the shaft.

1. Install nut (12) on the shaft. Tighten the nut to
   a torque of 1350 135 lb.ft. (186.7 18.7
   mkg).
2. Install bearing cone (14) on the bearing cage.
3. Tighten or loosen nut (12) until the holes in
   lock (13) and the bearing cage are in alignment
   when the lock is installed. Install the bolts
   that hold the lock.

• 18. Install cap (17) on the support without the
  cork gasket and shims. Install bolts (16).
  Install tool
• (E) on the cap. Turn the support four or five
  revolutions before checking the torque. Put a
  preload on the bearings by tightening bolts (16)
  so a torque of 40 to 50 lb.ft. (5.5 to 6.9 mkg)
  is needed to turn the support. Measure the
  distance between the front face of the support
  and rear face of the cap with a feeler gauge
  (15).
• Remove the bolts and cap (17). Install the cork
  gasket on the bearing cage. Install enough shims
  on the cap to make up the distance measured in
  Step 18. Put the cap and shims in position on
  the support. Install the bolts that hold it.
• Fill the final drive case and steering clutch
  compartment with oil to the correct levels. end
  by

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Shutdown SIS
Previous Screen
Product TRACK-TYPE TRACTOR Model D8K TRACK-TYPE
TRACTOR 66V Configuration D8K TRACTOR / POWER
SHIFT / 66V00001-02084 (MACHINE)
Disassembly and Assembly D8K TRACTOR POWER
TRAIN Media Number -SENR7011-01 Publication Date
-01/06/1976
Date Updated -12/12/2017
SENR70110013
Final Drive Oil Pump SMCS - 4060-11 4060-12
4060-15 4060-16 Remove Final Drive Oil Pump 1.
Remove the oil from the final drive case.

1. Remove nuts (2).
2. Install two 3/8"-16NC forcing screws in the oil
   pump. Tighten the forcing screws evenly and make
   a separation of the oil pump from the bevel gear
   case.
3. Remove the final drive oil pump (1).

Install Final Drive Oil Pump
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• Put the final drive oil pump (1) in position over
  its studs on the bevel gear case.
• NOTE Make sure the teeth of the oil pump gear
  engage in the teeth of the idler pinion.
• Install the nuts that hold the oil pump to the
  bevel gear case.
• Fill the final drive case with oil to the correct
  level.

Disassemble Final Drive Oil Pump
start by a) remove final drive oil pump
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1. Remove the nut and lock from gear (1). Install
   tooling (A) and remove the gear.
2. Remove the key from the gear shaft.

1. Remove bolts (5) and locks (3).
2. Remove cover (7). Remove bearing (6) from the
   cover with tooling (B).
3. Remove two gears (2) from body (4).
4. Remove the bearing from the body.

Assemble Final Drive Oil Pump
NOTE Check the dimensions between the gears and
cover, the bore of the bearings, the diameter of
the drive shaft and the diameter of the idler
shaft before the pump is assembled. See OIL PUMP
FOR THE FINAL DRIVE in SPECIFICATIONS. 1. Install
the bearings in the body and cover with tooling
(A).

1. Install gears (2) and (3) into the body (1).
2. Put the cover (4) in position on the body.
   Install the bolts and locks that hold the body
   and cover together.

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• Install the key in the shaft for gear (3).
  Install gear (5) over the key.
• Install lock (7) and nut (6) that hold the gear
  on the shaft. Tighten nut (6) to a torque of 25
  5 lb.ft. (3.5 0.7 mkg).
• end by
• a) install final drive oil pump

Copyright 1993 - 2019 Caterpillar Inc. All
Rights Reserved. Private Network For SIS
Licensees.
Sat Dec 28 003816 UTC0800 2019
16
Shutdown SIS
Previous Screen
Product TRACK-TYPE TRACTOR Model D8K TRACK-TYPE
TRACTOR 66V Configuration D8K TRACTOR / POWER
SHIFT / 66V00001-02084 (MACHINE)
Disassembly and Assembly D8K TRACTOR POWER
TRAIN Media Number -SENR7011-01 Publication Date
-01/06/1976
Date Updated -12/12/2017
SENR70110014
Final Drive Cases SMCS - 4059-11 4059-12 Remove
Final Drive Cases

• start by
• remove sprockets
• remove final drive oil pumps
• NOTICE
• The oil pump for final drive must be removed
  before removing the final drive case. The idler
  pinion can fall on the drive shaft for the oil
  pump and cause damage to it.

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1. Remove bolts (2) that hold final drive case
(1) to the bevel gear case.
2. Install four 5/8"-11NC guide bolts, 5 in.
(12.7 cm) long, through the case into the bevel
gear case. Install three 5/8"-11NC forcing
screws (3) into the case. Make a separation of
the final drive and bevel gear cases. Install
two 5/8"-11NC forged eyebolts (4) in the final
drive case. Fasten a hoist and tool (A) to the
eyebolts. Remove the final drive case. Weight is
500 lb. (227 kg). NOTICE Keep the idler pinion
in position in the bevel gear case when making a
separation of the final drive and bevel gear
cases. Use a wire to keep the idler pinion in
position after the final drive case is removed.
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1. Remove plug (7). Remove the dowel that keeps the
   outer pinion bearing (6) in position in the case
   with a 1/4"-20NC bolt. Remove the outer pinion
   bearing with tooling (B).
2. Remove cap plug (8). Remove the dowel that keeps
   the outer bearing for the idler pinion (5) in
   position in the case. Remove bearing with tooling
   (B).

Install Final Drive Cases

1. Lower the temperature for the outer bearings for
   the pinion (2) and idler pinion (3). Install the
   bearings in their bores in the final drive case.
   Put the holes in the bearings in alignment with
   the holes in the case. Install the dowels and
   cap plugs that hold the bearings in position in
   the case.
2. Remove the old gasket material from the surfaces
   that seal the cases for the final drive and
   bevel gear. Put 7M7260 Liquid Gasket Material on
   the surfaces.
3. Install four 5/8"-11NC guide pins, 5 in. (12.7
   cm) long, in the bevel gear case.
4. Fasten a hoist and tool (A) to the final drive
   case (1) and put it in position on the guide
   pins. Make sure that the shafts for the pinion
   and idler pinion engage in their bearings.

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• 5. Install bolts (4) that hold the final drive
  and bevel gear cases together. Remove the four
  guide pins and install four bolts. Tighten the
  bolts to a torque of 200 20 lb.ft. (27.7 2.8
  mkg).
• end by
• install final drive oil pumps
• install sprockets

Copyright 1993 - 2019 Caterpillar Inc. All
Rights Reserved. Private Network For SIS
Licensees.
Sat Dec 28 003915 UTC0800 2019
20
Shutdown SIS
Previous Screen
Product TRACK-TYPE TRACTOR Model D8K TRACK-TYPE
TRACTOR 66V Configuration D8K TRACTOR / POWER
SHIFT / 66V00001-02084 (MACHINE)
Disassembly and Assembly D8K TRACTOR POWER
TRAIN Media Number -SENR7011-01 Publication Date
-01/06/1976
Date Updated -12/12/2017
SENR70110015
Final Drive Gears And Idler Pinion SMCS -
4055-11 4055-12 4091-11 4091-12 Remove Final
Drive Gears And Idler Pinion
start by a) remove final drive cases
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1. Put tape on the threads of the sprocket shaft
and final drive hub to prevent damage during
removal and installation.
2. Fasten a hoist and tools (A) and (B) to the
final drive gear and hub. Remove the gear and hub
as a unit (1). Weight is 500 lb. (227 kg).

1. Remove bolt (3) and lock. Remove the bearing race
   from the hub.
2. Remove nuts (2), locks (6), plates (4), and
   bolts. Remove hub (7) from gear (8). Weight of
   hub is 240 lb. (109 kg). Weight of gear is 235
   lb. (107 kg).

5. Fasten a hoist and tool (B) to idler pinion
(9) and remove it from the bevel gear case.
Weight is 185 lb. (39 kg).
6. Remove bearing races (10) from each end of the
idler pinion with tooling (C).
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1. Put the idler pinion on blocks so the lower end
   of the pinion shaft is approximately 3 in. (7.6
   cm) off the floor. Cut retainer (13) between
   every second spline as shown by arrows. Move the
   pieces of the retainer into the grooves in the
   idler pinion shaft far enough to clear the
   splines of the idler gear. Hit the top of the
   idler shaft with a hammer and remove the gear
   (11) from the idler pinion (12). Weight of the
   idler pinion is 95 lb. (43 kg). Weight of the
   idler pinion gear is 90 lb. (41 kg).
2. Remove the oil from the steering clutch
   compartment before removing the bearing cage (16)
   for the idler pinion.

9. Remove bolts (14) and locks (15). Install two
1/2"-13NC forcing screws in the bearing cage.
Tighten the forcing screws evenly and remove the
bearing cage.
10. Remove dowel (17) from the bearing cage with
a 1/4"-20NC bolt. Remove the bearing (18) with
tooling (D).
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11. Remove the outer race (19) for the pinion
with tooling (E).
Install Final Drive Gears And Idler Pinion
1. Heat the outer bearing race (3) for the pinion
in oil to a maximum temperature of 275F (135
C). Install it on the pinion shaft.

1. Lower the temperature of inner idler pinion
   bearing (1). Install it in its bearing cage. Put
   the dowel hole in the bearing in alignment with
   the hole in the cage. Install dowel (2).
2. Remove old gasket material from the sealing
   surfaces of the bearing cage for the idler pinion
   and the bevel gear case. Put 7M7260 Liquid
   Gasket Material on the surfaces.

4. Put bearing cage (4) for the idler pinion in
position of the bevel gear case. Install the
bolts that hold it.
25
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friend! Thank you very much for reading. Enter
the link into your browser. The full manual is
available for immediate download. https//www.eb
ooklibonline.com