Caterpillar Cat 972M Wheel Loader (Prefix A8P) Service Repair Manual (A8P00001 and up)

1
Service Repair Manual
Models 972M Wheel Loader
2
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Product WHEEL LOADER Model 972M WHEEL LOADER
A8P Configuration 972M Wheel Loader A8P00001-UP
(MACHINE) POWERED BY C9.3 Engine Disassembly and
Assembly 966M, 966M Series XE, 972M and 972M
Series XE Wheel Loaders Media Number
-UENR5562-08 Publication Date -01/05/2018 Date
Updated -24/05/2018
i05648965
Piston Pump (Implement) - Disassemble - 45
cc SMCS - 5070-015-FD 5070-015-II 5070-015
5084-015 5084-015-QP Disassembly
Procedure Table 1
Required Tools Required Tools Required Tools Required Tools
Tool Part Number Part Description Qty
A 1P-0510 Driver Gp 1
A 5P-8247 Hard Washer 1
B 8H-0663 Bearing Puller Gp 1
Start By a. Remove the piston pump (steering) .
Illustration 1
g03586796
3
1. Remove bolts (2) and valve (1).
Illustration 2
g03586798
2. Remove gasket (3) from valve (1).
Illustration 3
g03586800
Personal injury can result from being struck by
parts propelled by a released spring force. Make
sure to wear all necessary protective
equipment. Follow the recommended procedure and
use all recommended tooling to release the
spring force.
3. Remove bolts (4) and head (5).
4
Illustration 4 g03586802 4. Remove O-ring seal
(6), port plate (7), and bearing cup (8) from
head (5).
Illustration 5
g03586806
Illustration 6 g03586808 5. Remove nut (9),
O-ring seal (10), and solenoid (11).
5
Illustration 7
g03586811
Personal injury can result from being struck by
parts propelled by a released spring force. Make
sure to wear all necessary protective
equipment. Follow the recommended procedure and
use all recommended tooling to release the
spring force.

1. Remove cartridge (12) from adapter (13).
2. Remove adapter (13) from the pump housing.

Illustration 8 g03586840 8. Remove rings (14)
and O-ring seal (15) from adapter (13).
6
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Illustration 9
g03586845
Illustration 10 g03586853 9. Remove piston (16),
spring (17), and retainer (18) from the pump
housing.
Illustration 11 g03586863 10. Remove plug (19),
plugs (20), and the O-ring seals.
8
Illustration 12
g03586865
11. Remove bearing cone (21).
Illustration 13 g03586880 12. Remove shim (22)
and barrel assembly (23).
Illustration 14 g03586883 13. Remove pistons
(24), plate (25), and bearing (26).
9
Illustration 15
g03586987
Illustration 16
g03586988
Personal injury can result from being struck by
parts propelled by a released spring force. Make
sure to wear all necessary protective
equipment. Follow the recommended procedure and
use all recommended tooling to release the
spring force.

1. Use Tooling (A) and a suitable press to remove
   retaining ring (27) from barrel assembly (23).
2. Remove spring (28), washer (29), and pins (30)
   from barrel assembly (23).

10
Illustration 17
g03587136
16. Remove swashplate (31).
Illustration 18
g03587180

1. Remove screws (32), and bearings (33).
2. Remove shaft assembly (34) and bearing cup (35).
3. Remove O-ring seal (36) and swashplate spring
   (37).

Illustration 19 g03587302 20. Use Tooling (B)
and a suitable press to remove bearing cone (38)
from shaft (34).
11
Illustration 20 g03587305 21. Remove retaining
ring (39) and lip seal (40).
Copyright 1993 - 2021 Caterpillar Inc. All
Rights Reserved. Private Network For SIS
Licensees.
Fri Apr 9 184505 UTC0800 2021
12
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Product WHEEL LOADER Model 972M WHEEL LOADER
A8P Configuration 972M Wheel Loader A8P00001-UP
(MACHINE) POWERED BY C9.3 Engine Disassembly and
Assembly 966M, 966M Series XE, 972M and 972M
Series XE Wheel Loaders Media Number
-UENR5562-08 Publication Date -01/05/2018 Date
Updated -24/05/2018
i05751783
Piston Pump (Implement) - Disassemble - 165
cc SMCS - 5070-015-FD 5070-015-II 5070-015
5084-015 5084-015-QP S/N - A8P1-UP S/N -
AN31-UP S/N - B8P1-UP S/N - DYC1-UP S/N -
DZL1-UP S/N - EDW1-UP S/N - EJA1-2700 S/N -
FL21-700 S/N - GGN1-20100 S/N - JPR1-UP S/N -
KJP1-UP S/N - L9S1-600 S/N - LMM1-20100 S/N -
LSJ1-2200 S/N - M5S1-UP S/N - P6C1-UP
13
S/N - R1Z1-UP S/N - XCR1-UP Disassembly
Procedure Table 1
Required Tools Required Tools Required Tools Required Tools
Tool Part Number Part Description Qty
A 422-5473 Lifting Eye Assembly 2
B 1P-0510 Driver Gp 1
C 154-6360 Forcing Bolt 2
Start By a. Remove the implement
pump. NOTICE Care must be taken to ensure that
fluids are contained during performance of
inspection, maintenance, testing, adjusting, and
repair of the product. Be prepared to collect
the fluid with suitable containers before
opening any compartment or disassembling any
component containing fluids. Refer to Special
Publication, NENG2500, "Dealer Service Tool
Catalog" for tools and supplies suitable to
collect and contain fluids on Cat
products. Dispose of all fluids according to
local regulations and mandates.
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Illustration 1 g03655902 1. Remove bolts (1) and
adapter (2) from the head assembly.
Illustration 2
g03655896
2. Remove O-ring seal (3) from adapter (2).
Illustration 3
g03583686
3. Remove bolts (4) and control valve (5).
Illustration 4
g03651271
15
4. Remove O-ring seals (6) from control valve (5).
Illustration 5 g03654794 5. Remove bolts (7) and
position sensor (8) from cover (9). Note Pry
slots available on position sensor (8) to aid
removal.
Illustration 6 g03654808 6. Remove O-ring seal
(10) from position sensor (8).
Illustration 7
g03654813
16
7. Remove bolts (11) and cover (9) from pump body
(12). Note Pry slots available on cover (9) to
aid removal.
Illustration 8
g03654817
8. Remove O-ring seal (13) from cover (9).
Illustration 9
g03654834
Personal injury can result from being struck by
parts propelled by a released spring force. Make
sure to wear all necessary protective
equipment. Follow the recommended procedure and
use all recommended tooling to release the
spring force.
9. Mark the orientation of head assembly (15) in
relation to pump body for reassembly purposes.
Remove bolts (14) from head assembly (15).
17
10. Use Tooling (A) and a suitable lifting device
to remove head assembly (15) from pump body
(12). The weight of head assembly (15) is
approximately 27 kg (60 lb). Note The head
assembly bearing can be damaged if the head
assembly is not lifted straight up, use caution.
Best to cover the shaft spline before lifting the
head assembly to lower possibility of the head
assembly bearing damage. The port plate can fall
off when lifting the head assembly. Look to
secure the port plate as lifting the head
assembly from the pump body. Look to confirm
that the control and bias actuator pistons are
released from the head assembly.
Illustration 10 g03654838 11. Remove port plate
(16) from head assembly (15).

• Illustration 11
• Bearing Notch
• Bearing Joint

g03654840
18

• Illustration 12 g03654845
• Mark head assembly (15) at Bearing Notch (X) and
  Bearing Joint (Y) locations for assembly
  orientation of bearing assembly (17).
• If necessary, use Tooling (B) and a suitable
  press to remove bearing retainer (9) from head
  assembly (3).

Illustration 13 g03654850 Note Measure set
screws (19) height for reassembly purposes. 14.
Remove nuts (18) and set screws (19) from head
assembly (15).
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Illustration 14 g03654852 15. Remove plug (20),
plug (21), and the O-ring seals from head
assembly (15).
Illustration 15 g03653287 16. Remove bias
actuator (22), spring (23), and control actuator
(24) from pump body (12).
Illustration 16
g03653288
20

• Illustration 17 g03653291
• Place pump body (12) on an angle and lift
  rotating group (25) out of pump body (12) by
  retainer (27).
• Remove pistons (26) and retainer (27) from the
  barrel assembly.

Illustration 18 g03653289 19. Remove hold-down
ball (28), spacers (29), and springs (30) from
the barrel assembly.
21
Illustration 19 g03653293 20. Remove swashplate
(31) from pump body (12).

• Illustration 20 g03653295
• Remove bearing assemblies (34) and timing pins
  (35) from swashplate (31).
• Remove bolts (32), the washers, and sensor target
  (33).

22
Illustration 21 g03653299 23. Remove bolts (37),
retainers (38), and links (36) from swashplate
(31).

• Illustration 22 g03653302
• Remove plugs (39), fitting (40), and the O-ring
  seals.
• Remove bearing cradles (41) and O-ring seal (42)
  from pump body (12).

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Illustration 23
g03653303
26. Remove bolts (43) from pump body (12).
Illustration 24 g03653304 27. Use Tooling (C) to
remove seal retainer (44).
Illustration 25
g03653306
24
28. Remove O-ring seal (45), lip seals (46), and
O-ring seals (47) from seal retainer (44).
Illustration 26 g03653307 29. Remove shaft
assembly (48) from pump body (12).
Illustration 27 g03653312 30. Remove retaining
ring (49) from shaft assembly (48).
Illustration 28 g03653314 31. Use a suitable
press in order to remove bearing (50) from shaft
assembly (48).
25
Copyright 1993 - 2021 Caterpillar Inc. All
Rights Reserved. Private Network For SIS
Licensees.
Fri Apr 9 184602 UTC0800 2021
26
Shutdown SIS
Previous Screen
Product WHEEL LOADER Model 972M WHEEL LOADER
A8P Configuration 972M Wheel Loader A8P00001-UP
(MACHINE) POWERED BY C9.3 Engine Disassembly and
Assembly 966M, 966M Series XE, 972M and 972M
Series XE Wheel Loaders Media Number
-UENR5562-08 Publication Date -01/05/2018 Date
Updated -24/05/2018
i05337984
Piston Pump (Implement) - Assemble SMCS -
5070-016-II 5070-016 5070-016-FD 5084-016-QP
5084-016 S/N - A8P1-UP S/N - AN31-UP S/N -
B8P1-UP S/N - DYC1-UP S/N - DZL1-UP S/N -
EDW1-UP S/N - EJA1-2700 S/N - FL21-700 S/N -
GGN1-20100 S/N - JPR1-UP S/N - KJP1-UP S/N -
L9S1-600 S/N - LMM1-20100 S/N - LSJ1-2200 S/N -
M5S1-UP S/N - P6C1-UP
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S/N - R1Z1-UP S/N - XCR1-UP Assembly
Procedure Table 1
Required Tools Required Tools Required Tools Required Tools
Tool Part Number Part Description Qty
A 421-5661 Lifting Eye Assembly 2
C 1P-0510 Driver Gp 1
D - Loctite 242 -
E 6V-2055 Grease 1
1. Lubricate all sliding surfaces, radial O-ring
seals, lip seals, shaft, and bearings lightly
with hydraulic oil prior to assembly.
Illustration 1
g03578617
2. Install O-ring seal (49) onto cover (48).
Illustration 2
g03578628
28
3. Install cover (48) and bolts (47). Tighten
bolts (47) to a torque of 28 7 Nm (21 5 lb
ft).
Illustration 3 g03578856 4. Use a suitable press
to install bearing (46) onto shaft assembly (44).
Illustration 4 g03578676 5. Install retaining
ring (45) onto shaft assembly (44).
Illustration 5 g03578576 6. Install shaft
assembly (44) into pump housing (15).
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Illustration 6
g03578863
Illustration 7
g03578559

1. Use Tooling (C) to install lip seals (42).
2. Install O-ring seal (41) and O-ring seals (43)
   onto seal retainer (40).

Illustration 8
g03578877
30

1. Apply Tooling (D) onto bolts (39).
2. Install seal retainer (40) and bolts (39) onto
   pump housing (15). Tighten bolts (39) to a
   torque of 28 7 Nm (20 5 lb ft).

• Illustration 9 g03578416
• Install plugs (35), adapter (36), and the O-ring
  seals into pump housing (15).
• Install bearing cups (37) and O-ring seal (38)
  into pump housing (15).

Illustration 10 g03578445 13. Install actuators
(32) , retainers (34), and bolts (33) onto
swashplate (30). Tighten bolts (33) to a torque
of 12 3 Nm (106.2 26.6 lb in).
31
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Illustration 11 g03578442 14. Install bearing
assemblies (31) onto swashplate (30).
Illustration 12 g03578356 15. Install swashplate
(30) into pump body (15). Note Ensure that the
pins on the bearings align with the holes in pump
body (15).
33
Illustration 13 g03578318 16. Install spacers
(28), spring set (29) and hold-down ball (27)
onto the barrel assembly.
Illustration 14 g03578278 17. Install pistons
(25) and retainer (26) onto the barrel assembly.
34
Illustration 15 g03382799 18. Place pump body
(15) horizontally and install rotating group (24).
Illustration 16 g03382780 19. Install control
actuator (23), spring (22), and bias actuator
(21) onto pump body (15).
Illustration 17 g03382744 20. Install plug (19),
plug (20), and the O-ring seals into head
assembly (13).
35
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Friend! Thank you very much for visiting. Full
manual if required, please enter the following
URL into your browser. https//www.aservicemanual
pdf.com/