Caterpillar Cat 303.5 Mini Hydraulic Excavator (Prefix DCH) Service Repair Manual Instant Download

Service Repair Manual Models 303.5 M ini Hydraulic Excavator

303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 3013 E... 1/20 Shutdown SIS Previous Screen Product: MINI HYD EXCAVATOR Model: 303.5 MINI HYD EXCAVATOR DCH Configuration: 303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 3013 Engine Disassembly and Assembly 303.5 Mini Hydraulic Excavator Machine Systems Media Number -RENR3538-02 Publication Date -01/05/2007 Date Updated -15/05/2007 i02763565 Piston Motor (Travel) - Disassemble SMCS - 4351-015; 5058-015 Disassembly Procedure Table 1 Required Tools Tool Part Number Part Description Qty (A) 1U-7600 Slide Hammer 1 (B) 205-0633 Spanner Wrench 1 (C) 9S-9152 Bearing Puller 1 (D) 1P-0510 Driver Group 1 (E) 1P-1862 Snap Ring Pliers 1 (F) 5B-0841 Bolt 1 (G) 6B-6683 Nut 2 Start By: A. Remove the travel motor. Refer to Disassembly and Assembly, "Travel Motor - Remove" in this manual. 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 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/3

303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 3013 E... 2/20 before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. Note: Put identification marks on the travel motor and on all lines for installation purposes. Plug all lines. This will help to prevent fluid loss and this helps to keep contaminants from entering the system. Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism. 1. Put an alignment mark across the section of the travel motor for assembly purposes. The parts must be reinstalled in the original locations of the parts. Illustration 1 g00774455 2. Remove plug (2) , plug (3) , plug (4) , and the O-ring seals. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/3

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303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 3013 E... 3/20 Illustration 2 g00776164 3. Install Tooling (F) and (G) at opening (2a) . Use opening (3A) in order to remove wire (5) . Illustration 3 g00775832 4. Install Tooling (F) and Tooling (G) . Illustration 4 g00776141 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/3

303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 3013 E... 4/20 5. Remove wire (5) . through opening (3a) . Pull wire (5) and turn cover (1) in order to remove the wire from the motor assembly. Illustration 5 g00774466 6. Use Tooling (A) in order to remove cover (1) . Illustration 6 g00774472 7. Remove O-ring seal (6) . https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/3

303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 3013 E... 5/20 Illustration 7 g00774475 8. Remove plate (7) . Illustration 8 g00774480 9. Remove gear (8) . Illustration 9 g00774482 10. Remove three gears (9) . https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/3

303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 3013 E... 6/20 Illustration 10 g00774486 11. Remove three bearings (10) . Illustration 11 g00774487 12. Remove carrier (11) . https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/3

303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 3013 E... 7/20 Illustration 12 g00774490 13. Remove three bearing races (12) . Illustration 13 g00774491 14. Remove sun gear (13) . Remove four screws (14) . Illustration 14 g00774566 15. Remove ring (15) . https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/3

303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 3013 E... 8/20 Illustration 15 g00774575 16. Remove four gears (16) . Illustration 16 g00774577 17. Remove four bearings (17) . Illustration 17 g00774580 18. Remove four bearing races (18) . Remove four washers (19) . https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/3

303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 3013 E... 9/20 Illustration 18 g00775038 19. Remove two plugs (20) . Illustration 19 g00774582 20. Use Tooling (B) in order to remove hidden ring nut (21) . https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/3

303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 301... 10/20 Illustration 20 g00774586 21. Remove ring nut (21) . Illustration 21 g00774589 22. Remove four socket head screws (22) . Remove valve assembly (23) . Illustration 22 g00774592 23. Remove two plugs (24) , and the O-ring seals. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/3

303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 301... 11/20 Illustration 23 g00774593 24. Remove two plugs (25) , and the O-ring seals. Remove spool (26) . Illustration 24 g00774597 25. Remove four small O-ring seals (27) . Remove two large O-ring seals (28) . Illustration 25 g00774603 26. Remove plug (29) , and the O-ring seal. Remove spring (30) . https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/3

303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 301... 12/20 Illustration 26 g00774612 27. Remove plug (31) , and the O-ring seal. Remove spool (32) . Illustration 27 g00774614 28. Remove two plugs (33) , and the O-ring seals. Remove two springs (34) , two washers (35) , and spool (36) . https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/3

303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 301... 13/20 Illustration 28 g00774620 29. Remove two plugs (37) and the O-ring seals. Remove two springs (38) and two pistons (39) . Illustration 29 g00774631 30. Remove six socket head bolts (40) . Remove cover (41) . Illustration 30 g00774647 31. Remove port plate (42) . https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/3

303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 301... 14/20 Illustration 31 g00774651 32. Remove bearing (43) , and two O-ring seals (44) . Illustration 32 g00774655 Note: Turn the housing on one side in order to remove the barrel assembly as a unit. 33. Remove cylinder barrel assembly (45) . Illustration 33 g00774662 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/3

303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 301... 15/20 34. Remove swashplate (46) . Illustration 34 g00774665 Note: Mark the location of the pistons in the barrel for assembly purposes. 35. Remove pistons (47) , and retainer plate (48) as a unit from barrel (45) . Remove pistons (47) from retainer plate (48) . Illustration 35 g00774680 36. Remove collar (49) . Remove three pins (50) . https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/3

303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 301... 16/20 Illustration 36 g00774674 37. Remove two balls (51) . Illustration 37 g00774683 38. Remove two pistons (52) , and two springs (53) . Illustration 38 g00774688 39. Remove shaft assembly (54) . https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/3

303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 301... 17/20 Illustration 39 g00774692 40. Remove lip seal (55) . Illustration 40 g00774694 41. Use a suitable press and Tooling (C) in order to remove bearing (56) from shaft (57) . https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/3

303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 301... 18/20 Illustration 41 g00774704 42. Remove housing (58) from housing (59) . Illustration 42 g00774707 43. Remove duo-cone seal kit (60) . Illustration 43 g00774717 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/3

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303.5 Mini Hydraulic Excavator DCH00001-UP (MACHINE) POWERED BY 301... 19/20 Illustration 44 g00774748 Note: When the plug is removed (131) steel balls will fall from the housing. Place a receptacle under the housing in order to catch the steel balls. 44. Remove plug (61) . Remove steel balls (62) from the housing. Illustration 45 g00774755 45. Use Tooling (D) in order to remove bearing assembly (63) . Illustration 46 g00774760 46. Remove duo-cone seal kit (64) . https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/3

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