Service Repair Manual
Models
320D2L Excavator
w
3/25(W)
any disassembled components and clean them properly before assembly. Clean the hydraulic system properly after any major component exchange or especially after a component failure, to remove any contamination.
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
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
4/25(W)
2. Remove bolts (4) . Remove proportional reducing valve (5) from pump control (1) .
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.
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
5/25(W)
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
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
6/25(W)
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.
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.
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
7/25(W)
Illustration 10
g00706249
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.
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
8/25(W)
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.
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.
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
9/25(W)
Illustration 14
g00706266
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.
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
10/25(W)
Illustration 16
g00882608
17. Remove control piston (42) , spring (41) , spring (40) , spool (39) , and shims (38) from the pump control.
Illustration 17
g00706271
18. Remove pin (43) from the pump control.
Illustration 18
g00706272
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
11/25(W)
19. Remove O-ring seal (44) from the pin.
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.
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
12/25(W)
Illustration 21
g00706275
22. Remove plugs (49) . Remove three plugs (50) from the pump control.
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.
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
13/25(W)
Illustration 24
g01200457
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
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
14/25(W)
27. Remove O-ring seal (63) from covers (61) .
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) .
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
15/25(W)
Illustration 29
g01200471
30. Remove orifices (67) from head (58) .
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.
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
16/25(W)
Illustration 31
g01200473
32. Remove plugs (73) , bolts (74) , and covers (75) from pump housing (72) .
Illustration 32
g01200475
33. Remove plug (76) from covers (75) .
Illustration 33
g01200478
34. Remove O-ring seals (76) from pump housing (72) .
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
17/25(W)
Illustration 34
g01200477
35. Remove plugs (79) , bolts (77) , and covers (78) from pump housing (72) .
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) .
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
18/25(W)
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 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) .
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
19/25(W)
Illustration 39
g01200487
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) .
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
20/25(W)
43. Repeat Step 38 through Step 42 for the remaining barrel assembly.
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) .
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
21/25(W)
Illustration 44
g01200497
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) .
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
22/25(W)
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.
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
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.
w
23/25(W)
Illustration 49
g01200506
52. Remove plate (99) from swashplate assembly (97) .
Illustration 50
g01200507
53. Remove bearings (100) from swashplate assembly (97) .
Illustration 51
g01200509
54. Remove dowel pins (101) from swashplate (97) .
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
24/25(W)
Illustration 52
g01200510
55. Remove bearing (102) from swashplate (97) . 56. Repeat Step 52 through Step 55 for swashplate assembly (98) .
Illustration 53
g01200511
57. Remove bearings (103) from pump housing (72) .
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27
w
25/25(W)
Illustration 54
g01200512
58. Remove guide pins (104) from pump housing (72) .
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.
Thu Feb 27 14:41:39 UTC+0800 2020
All Rights Reserved. Private Network For SIS Licensees.
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw... 2020/2/27