Caterpillar Cat 12M Motor Grader (Prefix B9F) Service Repair Manual (B9F00001 and up)

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Service Repair Manual
Models 12M Motor Grader
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Product MOTOR GRADER Model 12M MOTOR GRADER
B9F Configuration 12M Motor Grader B9F00001-UP
(MACHINE) POWERED BY C6.6 Engine
Disassembly and Assembly 12M and 120M Motor
Graders Power Train Media Number
-KENR6419-08 Publication Date -01/05/2017
Date Updated -15/05/2017
i07077362
Transmission - Disassemble SMCS - 3030-015
3159-015 3176-015 Disassembly Procedure Table 1
Required Tools Required Tools Required Tools Required Tools
Tool Part Number Part Description Qty
A 439-3940 Link Bracket 3
B 422-8733 Jack Stand Gp 3
C 1U-9202 Lever Puller Hoist 1
D 1P-1863 Retaining Ring Pliers 1
E 308-3470 Jack Stand Gp 2
F 140-7742 Sleeve 1
G 154-6181 Forcing Bolt 2
H FT-2769 Table 1
J 4C-8156 Lifting Fixture 1
K 1U-6410 Three Jaw Puller 1
K 1P-0510 Driver Gp 1
L 9U-7480 Compressing Tube 1
L 5P-7970 Nut 1
L 8T-4224 Hard Washer 1
L - 1
3
Bolt M8 - 1.25 by 460mm
M 8B-7548 Push-Puller Tool Gp 1
N 2P-8312 Retaining Ring Pliers 1
P 1P-2321 Combination Puller 1
P 1P-0510 Driver Gp 1
R 189-0408 Shackle As 1
R 3E-3882 Eyebolt 1
S 126-7175 Push-Puller Tool Gp 1
S 4C-5653 Threaded Adapter 1
S 1P-0510 Driver Gp 1
Start By a. Remove the transmission. NOTICE Car
e 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.
NOTICE Keep all parts clean from
contaminants. Contaminants may cause rapid wear
and shortened component life.
Note Put identification marks on all harness
assemblies for installation purposes.
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Illustration 1 g01386565 1. Attach Tooling (A)
and a suitable lifting device to transmission
(1). The weight of transmission (1) is
approximately 862 kg (1900 lb). Use Tooling (A)
and the suitable lifting device to position
transmission (1) onto Tooling (B). Remove hose
assembly (2).
Illustration 2 g01386568 2. Remove bolts (3) to
remove control module (4) and spacers (5).
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Illustration 3
g01386574
3. Remove yoke assembly (6).
Illustration 4
g01386575

1. Remove retaining ring (7).
2. Remove cup (8). Remove O-ring seal (9).

Illustration 5 g01386579 6. Attach Tooling (A),
Tooling (C), and a suitable lifting device to
transmission (1). Use Tooling (A), Tooling (C),
and the suitable lifting device to position
transmission (1) onto Tooling (B) and suitable
cribbing. Position transmission (1) with the
output shaft upward.
6
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Illustration 6
g01386585
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.
7. Remove bolts (10) to remove plate assembly
(11).
Illustration 7
g01386589
8. Remove lip seal (12).
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Illustration 8 g01386599 9. Use Tooling (D) to
remove retaining ring (13). Remove coned disc
springs (14). Note Note the orientation of coned
disc springs (14) for assembly purposes.
Illustration 9
g01386610
10. Remove O-ring seal (15) and piston (16).
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Illustration 10 g01386621 11. Remove piston seal
(17). Remove piston seal (18).
Illustration 11 g01386624 12. Disconnect harness
assembly (19) and harness assembly (21). Remove
guard (20).
Illustration 12 g01386632 13. Remove bolts (22).
Use two people to remove housing (23). The weight
of housing (23) is approximately 20 kg (45 lb).
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Illustration 13 g01386646 14. Remove pressure
sensor (24) and the O-ring seal. Remove solenoid
(25).
Illustration 14 g01386658 15. Remove O-ring seal
(26), O-ring seal (27), O-ring seal (28), O-ring
seal (29), and O-ring seal (30).
Illustration 15
g01386662
16. Remove seal (31).
Illustration 16
g01386663
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• Remove friction discs (32) and clutch plates
  (33).
• Note Note the quantity and the order of friction
  discs (32) and clutch plates (33) for assembly
  purposes.
• Remove O-ring seals (34) and dowels (35).

Illustration 17 g01386675 19. Remove retaining
ring (36). Remove hub (37).
Illustration 18 g01386684 20. Attach Tooling
(A), Tooling (C), Tooling F, and a suitable
lifting device to transmission (1). Use Tooling
(A), Tooling (C), Tooling (F), and the suitable
lifting device to position transmission (1) onto
Tooling (B) and Tooling (E) with the output shaft
downward. The weight of transmission (1) is
approximately 862 kg (1900 lb).
12
Illustration 19 g01386730 21. Remove bolt (38)
to remove speed sensor (39) and guard (40).
Illustration 20 g01386747 22. Remove bolts (41)
to remove speed sensor (42) and speed sensor (43).
Illustration 21
g01386749
23. Remove cover (44).
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Illustration 22 g01386757 24. Remove bolts (45)
to remove speed sensor (46) and speed sensor (47).

• Illustration 23 g01386764
• Attach Tooling (A), Tooling (C), and a suitable
  lifting device to housing (49). The weight of
  housing (49) is approximately 136 kg (300 lb).
  Remove bolts (48).
• Use Tooling (A), Tooling (C), and the suitable
  lifting device to remove housing (49).
• Note If necessary, use Tooling (G) to assist in
  removal of housing (49).

Illustration 24
g01386792
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27. Remove O-ring seal (50). Remove bolts (51)
and the locks. Remove tube assembly (52) and the
O-ring seal.
Illustration 25 g01386795 28. Remove bolts (53)
to remove seal carrier (54). Remove bolts (55) to
remove seal carrier (56).
Illustration 26 g01386797 29. Remove seal rings
(57). Remove O-ring seals (58). Repeat this step
for the remaining seal carrier.
Illustration 27
g01386811
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• Illustration 28 g01386815
• Use Tooling (J) and a suitable lifting device to
  remove clutch assembly (59) and clutch assembly
  (60). The combined weight of clutch assembly (59)
  and clutch assembly (60) is approximately 163 kg
  (360 lb).
• Position clutch assembly (59) and clutch assembly
  (60) onto Tooling (H). If necessary, support
  clutch assembly (60) with suitable cribbing.
• Remove Tooling (J) to separate clutch assembly
  (59) from clutch assembly (60).

Illustration 29 g01386827 33. Use Tooling (K) to
remove bearing (61) and rotor (62) from clutch
assembly (59). Note Be sure to attach Tooling
(K) to gear assembly (63) to prevent damage to
rotor (62).
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Illustration 30 g01386841 34. Remove thrust
washer (64) and gear assembly (63). Note Note
the orientation of thrust washer (64) for
assembly purposes.
Illustration 31 g01386992 35. Remove bearing
sleeves (65) from gear assembly (63).
Illustration 32
g01386993
36. Remove thrust washer (66).
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Note Note the orientation of thrust washer (66)
for assembly purposes.
Illustration 33
g01386997
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.
37. Use Tooling (L) to compress hub assembly
(67). Remove lock rings (68) and two half
rings (69) (not shown). Note Note the
orientation of lock rings (68) and two ring
halves (69) for assembly purposes.
Illustration 34
g01387088
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38. Remove hub assembly (67), friction discs
(70), and clutch plates (71). Note Note the
order of friction discs (70) and clutch plates
(71) for assembly purposes.
Illustration 35 g01387093 39. Remove wave spring
(72) and piston (73).
Illustration 36 g01387119 40. Remove seal rings
(74) and (75) from piston (73).
Illustration 37
g01387137
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41. Use a suitable lifting device to turn over
clutch assembly (59). The weight of clutch
assembly (59) is approximately 59 kg (130 lb).
Illustration 38
g01387150
Illustration 39
g01387221
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.
42. Use Tooling (M) to remove bearing (76).
Remove thrust washer (77), thrust disc (78), and
gear assembly (79). Note Note the orientation of
thrust disc (78) for assembly purposes.
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Illustration 40 g01387228 43. Remove thrust disc
(80), washer (81), half rings (82), and lock
rings (83). Note Note the orientation of thrust
disc (80) for assembly purposes.
Illustration 41 g01387232 44. Remove hub
assembly (84). Remove friction discs (85) and
clutch plates (86). Note Note the orientation of
friction discs (85) and clutch plates (86) for
assembly purposes.
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• Illustration 42 g01387235
• Use Tooling (N) to remove retaining ring (87).
• Remove balance piston (88). Remove seal ring (89)
  from balance piston (88).
• Remove springs (90).
• Remove piston (91). Remove seal rings (92) and
  (93) from piston (91).

Illustration 43 g01387511 49. Use Tooling (K) to
remove inner bearing (94) from clutch assembly
(60). Remove thrust disc (95) and gear
(96). Note Note the orientation of thrust disc
(95) for assembly purposes.
Illustration 44 g01387520 50. Remove thrust disc
(97) and gear assembly (98) from clutch assembly
(60). Note Note the orientation of thrust disc
(97) for assembly purposes.
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Illustration 45 g01387526 51. Remove sleeve
bearing (99) from gear assembly (98).
Illustration 46 g01387528 52. Remove thrust disc
(100) and washer (101) from clutch assembly
(60). Note Note the orientation of thrust disc
(100) for assembly purposes.
Illustration 47
g01387541
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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.
53. Use Tooling (L) to compress hub assembly
(102). Remove lock rings (103) and two half rings
(104) (not shown). Note Note the orientation of
lock rings (103) and two ring halves (104) for
assembly purposes.
Illustration 48 g01387556 54. Remove hub
assembly (102), friction discs (105), and clutch
plates (106) from clutch assembly (60). Note
Note the orientation of friction discs (105) and
clutch plates (106) for assembly purposes.
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Illustration 49 g01387573 55. Remove wave spring
(107) and piston (108) from clutch assembly (60).
Illustration 50 g01387580 56. Remove seal rings
(109) and (110) from piston (108).
Illustration 51 g01387592 57. Use a suitable
lifting device to turn over clutch assembly (60)
onto Tooling (H). The weight of clutch assembly
(60) is approximately 54 kg (120 lb).
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Illustration 52 g01387595 58. Use Tooling (P) to
remove inner bearing (111), thrust disc (112),
and gear (113) from clutch assembly (60). Note
Note the orientation of thrust disc (112) for
assembly purposes.
Illustration 53 g01387755 59. Remove thrust disc
(114) and gear assembly (115). Note Note the
orientation of thrust disc (114) for assembly
purposes.
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Illustration 54 g01387765 60. Remove bearing
(116) from gear assembly (115).
Illustration 55 g01387820 61. Remove thrust disc
(117) and washer (118). Note Note the
orientation of thrust disc (117) for assembly
purposes.
Illustration 56
g01387824
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.
27
62. Use Tooling (L) to compress hub assembly
(119). Remove lock rings (120) and two half rings
(121) (not shown). Note Note the orientation of
lock rings (120) and two ring halves (121) for
assembly purposes.
Illustration 57 g01387846 63. Remove hub
assembly (119), friction discs (122), and clutch
plates (123). Note Note the orientation of
friction discs (122) and clutch plates (123) for
assembly purposes.
Illustration 58 g01387852 64. Remove wave spring
(124) and piston (125).
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Illustration 59 g01387858 65. Remove seal rings
(126) and (127) from piston (125).
Illustration 60 g01387876 66. Use Tooling (P) to
remove inner bearing (128) and gear (129) from
input shaft assembly (130). This is necessary at
this time so that you can remove the remaining
two clutch assemblies.
Illustration 61 g01387884 67. Remove bolts (131)
to remove seal carrier (132).
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Illustration 62 g01387892 68. Remove seal rings
(133). Remove O-ring seals (134).
Illustration 63 g01387895 69. Attach Tooling (R)
and a suitable lifting device to clutch assembly
(135). The weight of clutch assembly (135) is
approximately 61 kg (135 lb). Use Tooling (R) and
the suitable lifting device to remove clutch
assembly (135). Position clutch assembly (135)
onto Tooling (H).
Illustration 64
g01387898
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70. Use Tooling (P) to remove inner bearing
(136), spacer (137), and gear (138) from clutch
assembly (135).

• Illustration 65 g01388168
• Remove spacer (139) and thrust disc (140) from
  clutch assembly (135).
• Note Note the orientation of thrust disc (140)
  for assembly purposes.
• Remove gear assembly (141), thrust disc (142),
  and washer (143).
• Note Note the orientation of thrust disc (142)
  for assembly purposes.

Illustration 66 g01388185 73. Remove bearing
(144) from gear assembly (141).
31
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Illustration 67
g01388208
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.
74. Use Tooling (L) to compress hub assembly
(145). Remove lock rings (146) and two half rings
(147) (not shown). Note Note the orientation of
lock rings (146) and two ring halves (147) for
assembly purposes.
Illustration 68 g01388240 75. Remove hub
assembly (145), friction discs (148), and clutch
plates (149).
33
Note Note the orientation of friction discs
(148) and clutch plates (149) for assembly
purposes.
Illustration 69 g01388243 76. Remove wave spring
(150) and piston (151).
Illustration 70 g01388246 77. Remove seal rings
(152) and (153) from piston (151).
Illustration 71
g01388263
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• Illustration 72 g01388277
• Use a suitable lifting device to turn over clutch
  assembly (135) onto Tooling (H). The weight of
  clutch assembly (135) is approximately 41 kg (90
  lb).
• Attach Tooling (S) to clutch assembly (135) to
  remove inner bearing (154). Remove thrust race
  (155), thrust disc (156), thrust disc (157), and
  gear assembly (158).
• Note Note the orientation of thrust discs (156)
  and (157) for assembly purposes.

Illustration 73 g01388296 80. Remove roller
bearing assembly (159) and thrust disc (160) from
clutch assembly (135). Note Note the orientation
of thrust disc (160) for assembly purposes.
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
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