2. Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
B 1P-2420 Transmission Repair Stand 1
C 138-7575 Link Bracket 3
D
1P-0510 Driver Group 1
1U-8605 Seal Guide 1
E 1P-1859 Retaining Ring Pliers 1
H 1U-6396 O-Ring Assembly Compound 1
Illustration 1 g01200516
1. Install gasket (107) onto pump housing (72) .
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4. Illustration 5 g01200510
5. Install bearing (102) into swashplate (97) .
Illustration 6 g01200509
6. Install dowel pins (101) into swashplate (97) .
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5. Illustration 7 g01200507
7. Install bearings (100) onto swashplate assembly (97) .
Illustration 8 g01200506
8. Install plate (99) onto swashplate assembly (97) .
9. Repeat Step 5 through Step 8 for swashplate assembly (98) .
Illustration 9 g01200504
10. Install swashplate assemblies (97) and (98) into pump housing (72) .
Note: The swashplate assemblies must be installed in the original position during assembly.
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6. Illustration 10 g03723301
11. Install retaining ring (90) onto shaft assembly (91) .
Illustration 11 g01201656
12. Raise the temperature of bearing (95) and bearing (93) . Install bearing (95) and bearing
(93) onto shaft assembly (91) .
Illustration 12 g01200498
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7. 13. Install ring (94) onto shaft assembly (91) .
14. Repeat Step 11 through Step 13 for shaft assembly (92) .
Illustration 13 g01201657
Illustration 14 g01201658
15. Lower the temperature of the shaft assemblies. Install shaft assemblies (91) and (92) into
pump housing (72) .
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8. Illustration 15 g01200492
Note: The pump has been removed from Tooling (B) for photographic purposes only.
16. Use Tooling (E) to install retaining rings (90) .
Illustration 16 g01200491
17. Install springs (89) into barrel (84) .
Illustration 17 g01200488
18. Install retainer (88) onto barrel (84) .
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9. Illustration 18 g01200487
19. Install cap (87) onto barrel (84) .
Illustration 19 g01200486
20. Install pistons (85) into piston plate (86) .
Illustration 20 g01200485
21. Install piston assembly (83) into barrel (84) .
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10. 22. Repeat Step 17 through Step 21 for the remaining barrel assembly.
Illustration 21 g01200482
23. Install barrel assemblies (81) and (82) into pump housing (72) .
Note: It may be necessary to use string to aid in the removal procedure. The barrel
assemblies must be installed in the original position during assembly.
Illustration 22 g01200481
24. Install O-ring seal (80) onto covers (78) .
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12. Illustration 26 g01200473
28. Install covers (75) , bolts (74) , and plugs (73) onto pump housing (72) .
Illustration 27 g01200472
29. Install O-ring seals (68) and (69) onto pump housing (72) . Install port plates (70) and (71) .
Note: The port plates must be installed in the original position during assembly.
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13. Illustration 28 g01200471
30. Install orifices (67) into head (58) .
Illustration 29 g01200462
31. Install plugs (65) and (66) into head (58) .
Illustration 30 g01201668
32. Install bearings (64) into the head.
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14. Illustration 31 g01200459
33. Install O-ring seal (63) into covers (61) .
Illustration 32 g01200458
34. Install nipples (62) , covers (61) and bolts (60) onto head (58) . Install caps (59) onto
nipples (62) .
Illustration 33 g01200457
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15. 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.
35. Attach Tooling (C) and a suitable lifting device to head (10) . Install head (58) , bolts (56) ,
and bolts (57) . The weight of head (58) is approximately 41 kg (90 lb).
Illustration 34 g01200392
36. Install O-ring seal (54) and lip seal (55) onto the seal assembly.
Illustration 35 g01201683
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16. 37. Install shrink wrap on the shaft. This will protect the seal during the installation procedure.
Install the gasket and bell housing (53) . Install bolts (51) .
Illustration 36 g01201684
38. Use Tooling (D) to install seal assembly (52) .
Illustration 37 g00706275
39. Install plugs (49) . Install three plugs (50) into the pump control.
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17. Illustration 38 g00882609
40. Install slide plate (47) and dowel (48) onto the control linkage.
Illustration 39 g00706273
41. Install control linkage (46) and sleeve (45) into the pump control.
Illustration 40 g00706272
42. Install O-ring seal (44) onto the pin.
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18. Illustration 41 g00706271
43. Install pin (43) into the pump control.
Illustration 42 g00882608
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.
44. Install shims (38) , spool (39) , spring (40) , spring (41) , and control piston (42) into the
pump control.
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19. Illustration 43 g00706267
45. Install O-ring seal (37) onto the cover.
Illustration 44 g00706266
46. Install cover (36) onto the pump control. Install bolts (35) .
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20. Illustration 45 g00706265
47. Install pilot piston (34) into the pump control.
Illustration 46 g00882601
48. Install ball (33) into the guide. Install guide (32) into the pump control. Install spring (31)
and spring (30) into the pump control.
Illustration 47 g00882599
49. Install O-ring seal (26) onto the adjuster. Install adjuster (24) . Install setscrew (22) . Install
nut (23) and nut (25) . Install O-ring seal (27) onto the retainer. Install retainer (29) . Install
O-ring seal (28) .
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21. Illustration 48 g00706249
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.
50. Install cover assembly (21) into the pump control. Install bolts (20) .
Illustration 49 g00706243
51. Install dowel pin (19) into the pin.
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22. Illustration 50 g00706239
52. Place the pump control in a soft jawed vise. Support pin assembly (17) . Install pin assembly
(17) into the pump control. Install piston (18) into the pump control.
Illustration 51 g00706179
53. Install O-ring seal (15) and backup ring (16) onto the stopper.
Illustration 52 g00706177
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23. 54. Install stopper (14) into the pump control.
Illustration 53 g00882598
55. Install screw (13) . Install bolts (11) . Install cover (12) into the pump control.
Illustration 54 g00706166
56. Install nut (10) onto the pump control.
57. Repeat Step 53 through Step 56 for the other side of the pump control.
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24. Illustration 55 g01202631
Right Pump Only
58. Install O-ring seal (6) , O-ring seal (7) , O-ring seal (8) , and O-ring seal (9) onto the
proportional reducing valve.
Illustration 56 g01202630
Right Pump Only
59. Install proportional reducing valve (5) onto pump control (1) . Install bolts (4) .
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25. Illustration 57 g01200312
60. Install pump control (1) .
61. Install bolts (2) and fitting (3) .
End By: Install the main hydraulic pump. Refer to Disassembly and Assembly, "Main Hydraulic
Pump - Install".
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Sat May 23 12:33:20 UTC+0800 2020
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26. Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 325D L EXCAVATOR CYW
Configuration: 325D & 325D L Excavators CYW00001-UP (MACHINE) POWERED BY C7 Engine
Disassembly and Assembly
324D, 325D, 326D and 329D Excavators and 329D MHPU Mobile Hydraulic Power
Unit Machine Systems
Media Number -RENR8646-22 Publication Date -01/02/2015 Date Updated -12/09/2018
i07305499
Main Hydraulic Pump - Install
SMCS - 5070-012
S/N - A3R1-UP
S/N - AZP1-UP
S/N - BFC1-UP
S/N - BTK1-UP
S/N - BYS1-UP
S/N - CYW1-UP
S/N - CZF1-UP
S/N - DBH1-UP
S/N - DJF1-UP
S/N - DTZ1-UP
S/N - EBM1-UP
S/N - EJC1-UP
S/N - GBR1-UP
S/N - GPB1-UP
S/N - GPK1-UP
S/N - J8D1-UP
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28. Thank you very much for
your reading. Please Click
Here. Then Get COMPLETE
MANUAL. NO WAITING
NOTE:
If there is no response to
click on the link above,
please download the PDF
document first and then
click on it.
29. S/N - WDK1-UP
S/N - WLT1-UP
S/N - XDB1-UP
S/N - YFW1-UP
Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 439-3940 Link Bracket 1
B 1U-9200 Lever Puller Hoist 1
C 439-3939 Link Brackets 2
Illustration 1 g01215928
1. Install O-ring seal (44).
Illustration 2 g01215724
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30. 2. Install pilot pump (43) and install bolts (42).
Illustration 3 g01215672
3. Install adapter (41) and install bolts (38). Install O-ring seal (40) and install coupling (39).
Illustration 4 g01215665
4. Install auxiliary pump (37) and install bolts (36).
Illustration 5 g03397798
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31. Note: If the coupling is stepped on one end, the stepped end should be installed facing out
towards the engine.
5. If equipped with flexible coupling. Tighten bolts (34A) to a torque of 110 ± 10 N·m
(81 ± 7 lb ft). Tighten the bolts that hold coupling insert (35A) to a torque of 320 ± 10 N·m
(236 ± 7 lb ft).
Illustration 6 g01215580
6. If equipped with hub type coupling. Install gear (35) and install bolt (34). Torque bolt
(34) to 240 ± 20 N·m (177 ± 15 lb ft).
Illustration 7 g01215556
7. Install main hydraulic pump (32). The weight of main hydraulic pump (32) is approximately
250 kg (550 lb). Install bolts (33). Remove Tooling (A), (B), and (C). Remove the suitable
lifting device.
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