2. Note: Cleanliness is an important factor. Before the disassembly procedure, clean the exterior of
the component . Cleaning will prevent dirt from entering the internal mechanism.
Note: Only the right pump control is equipped with the proportional reducing valve. The left
pump control starts with Step 4.
Illustration 1 g01200312
1. Remove bolts (2) , pump control (1) , and fitting (3) .
Illustration 2 g01202630
Right Pump Only
2. Remove bolts (4) . Remove proportional reducing valve (5) from pump control (1) .
4/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP538...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
3. Illustration 3 g01202631
Right Pump Only
3. Remove O-ring seal (9) , O-ring seal (8) , O-ring seal (7) , and O-ring seal (6) from the
proportional reducing valve.
Illustration 4 g00706166
4. Remove nut (10) from the pump control.
5/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP538...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
4. Illustration 5 g00882598
5. Measure the length of screw (13) for installation purposes. Remove screw (13) . Remove
bolts (11) . Remove cover (12) from the pump control.
Illustration 6 g00706177
6. Remove stopper (14) from the pump control.
Illustration 7 g00706179
7. Remove O-ring seal (15) and backup ring (16) from the stopper.
8. Repeat Step 4 through Step 7 for the other side of the pump control.
6/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP538...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
5. Illustration 8 g00706239
9. Place the pump control in a soft jawed vise. Support pin assembly (17) . Remove piston (18)
from the pump control. Remove pin assembly (17) from the pump control.
Illustration 9 g00706243
10. Remove dowel pin (19) from the pin.
Illustration 10 g00706249
7/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP538...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
6. 11. Remove bolts (20) . Remove cover assembly (21) from the pump control.
Illustration 11 g00882599
Personal injury can result from parts and/or covers under spring
pressure.
Spring force will be released when covers are removed.
Be prepared to hold spring loaded covers as the bolts are loosened.
12. Remove O-ring seal (28) . Remove retainer (29) . Remove O-ring seal (27) from the
retainer. Remove nut (23) and nut (25) . Remove setscrew (22) . Remove adjuster (24) .
Remove O-ring seal (26) from the adjuster.
8/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP538...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
7. Illustration 12 g00882601
13. Remove spring (30) and spring (31) from the pump control. Remove guide (32) from the
pump control. Remove ball (33) from the guide.
Illustration 13 g00706265
14. Remove pilot piston (34) from the pump control.
Illustration 14 g00706266
9/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP538...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
8. Personal injury can result from parts and/or covers under spring
pressure.
Spring force will be released when covers are removed.
Be prepared to hold spring loaded covers as the bolts are loosened.
15. Remove bolts (35) . Remove cover (36) from the pump control.
Illustration 15 g00706267
16. Remove O-ring seal (37) from the cover.
Illustration 16 g00882608
17. Remove control piston (42) , spring (41) , spring (40) , spool (39) , and shims (38) from the
pump control.
10/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP5...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
9. Illustration 17 g00706271
18. Remove pin (43) from the pump control.
Illustration 18 g00706272
19. Remove O-ring seal (44) from the pin.
11/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP5...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
10. Illustration 19 g00706273
20. Remove sleeve (45) and control linkage (46) from the pump control.
Illustration 20 g00882609
21. Remove slide plate (47) and dowel (48) from the control linkage.
Illustration 21 g00706275
22. Remove plugs (49) . Remove three plugs (50) from the pump control.
12/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP5...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
11. Illustration 22 g01200390
23. Use Tooling (A) to remove seal assembly (52) . Remove bolts (51) , bell housing (53) , and
the gasket.
Illustration 23 g01200392
24. Remove O-ring seal (54) and lip seal (55) from the seal assembly.
Illustration 24 g01200457
13/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP5...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
12. 25. Attach Tooling (C) and a suitable lifting device to head (10) . Remove bolts (56) and (57)
and head (58) . The weight of head (58) is approximately 41 kg (90 lb).
Illustration 25 g01200458
26. Remove caps (59) from nipples (62) . Remove nipples (62) , bolts (60) , and covers (61)
from head (58) .
Illustration 26 g01200459
27. Remove O-ring seal (63) from covers (61) .
14/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP5...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
13. Illustration 27 g01200460
28. Use Tooling (D) to remove bearings (64) from the head.
Illustration 28 g01200462
29. Remove plugs (65) and (66) from head (58) .
Illustration 29 g01200471
30. Remove orifices (67) from head (58) .
15/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP5...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
14. Illustration 30 g01200472
31. Remove O-ring seals (68) and (69) from pump housing (72) . Remove port plates (70) and
(71) .
Note: The port plates must be installed in the original position during assembly.
Illustration 31 g01200473
32. Remove plugs (73) , bolts (74) , and covers (75) from pump housing (72) .
16/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP5...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
15. Illustration 32 g01200475
33. Remove plug (76) from covers (75) .
Illustration 33 g01200478
34. Remove O-ring seals (76) from pump housing (72) .
Illustration 34 g01200477
35. Remove plugs (79) , bolts (77) , and covers (78) from pump housing (72) .
17/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP5...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
16. Illustration 35 g01200481
36. Remove O-ring seal (80) from covers (78) .
Illustration 36 g01200482
37. Remove barrel assemblies (81) and (82) from 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.
18/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP5...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
17. Illustration 37 g01200485
38. Mark piston assemblies (83) and barrel (84) for assembly. Remove piston assembly (83)
from barrel (84) .
Illustration 38 g01200486
39. Remove pistons (85) from piston plate (86) .
Illustration 39 g01200487
19/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP5...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
18. 40. Remove cap (87) from barrel (84) .
Illustration 40 g01200488
41. Remove retainer (88) from barrel (84) .
Illustration 41 g01200491
42. Remove springs (89) from barrel (84) .
43. Repeat Step 38 through Step 42 for the remaining barrel assembly.
20/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP5...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
19. Illustration 42 g01200492
Note: The pump has been removed from Tooling (B) for photographic purposes only.
44. Use Tooling (E) to remove retaining rings (90) .
Illustration 43 g01200494
45. Remove shaft assemblies (91) and (92) from pump housing (72) .
Illustration 44 g01200497
21/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP5...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
20. 46. Use Tooling (F) and a suitable press to remove bearing (93) from shaft assembly (91) .
Illustration 45 g01200498
47. Remove ring (94) from shaft assembly (91) .
Illustration 46 g01200501
48. Use Tooling (G) and a suitable press to remove bearing (95) from shaft assembly (91) .
22/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP5...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
21. Illustration 47 g03723277
49. Remove retaining ring (90) from shaft assembly (91) .
50. Repeat Step 46 through Step 49 for shaft (92) .
Illustration 48 g01200504
51. Remove swashplate assemblies (97) and (98) from pump housing (72) .
Note: The swashplate assemblies must be installed in the original position during assembly.
Illustration 49 g01200506
52. Remove plate (99) from swashplate assembly (97) .
23/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP5...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
22. Illustration 50 g01200507
53. Remove bearings (100) from swashplate assembly (97) .
Illustration 51 g01200509
54. Remove dowel pins (101) from swashplate (97) .
Illustration 52 g01200510
55. Remove bearing (102) from swashplate (97) .
24/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP5...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
23. 56. Repeat Step 52 through Step 55 for swashplate assembly (98) .
Illustration 53 g01200511
57. Remove bearings (103) from pump housing (72) .
Illustration 54 g01200512
58. Remove guide pins (104) from pump housing (72) .
25/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP5...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...
24. Suggest:
If the above button click is invalid.
Please download this document
first, and then click the above link
to download the complete manual.
Thank you so much for reading
25. Illustration 55 g01200514
59. Remove bolts (105) and cover (106) from pump housing (72) .
Illustration 56 g01200516
60. Remove gasket (107) from pump housing (72) .
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Mon Mar 2 00:38:18 UTC+0800 2020
26/26
329D L Excavator TPM00001-UP (MACHINE) POWERED BY C7 Engine(SEBP5...
2020/3/2
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...