336D 2L and 340D 2L Excavators Machine Systems Main Hydraulic Pump - Remove and Install Caterpillar


Main Hydraulic Pump - Remove and Install
`
1.1. Removal Procedure
2.1. Installation Procedure

Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
1U-9200  Lever Puller Hoist 
439-3940  Link Bracket 

Start By:

a. Remove the hood.

b. Remove the muffler.

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.

Note: Put identification marks on all lines, on all hoses, on all harness assemblies, and on all tubes for installation purposes. Plug all lines, hoses, and tubes to prevent fluid loss and to keep contaminants from entering the system.


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 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.


------ WARNING! ------

Personal injury can result from hydraulic oil pressure and hot oil.

Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.

Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.




    Illustration 1g06034973

  1. Remove bolts (1) and step (2).


    Illustration 2g06034974

  2. Open door (3).


    Illustration 3g01211517

  3. Remove bolts (4).


    Illustration 4g01211518

  4. Remove bolts (5).


    Illustration 5g01211519

  5. Remove bolt (6), bolts (8), and panel (7).


    Illustration 6g06034975

  6. Remove bolts (9).


    Illustration 7g01211521

  7. Remove bolts (10).


    Illustration 8g01211522

  8. Remove bolts (11).


    Illustration 9g01211523

  9. Remove bolts (13), engine lifting bracket (12), and muffler support (14).


    Illustration 10g06036636

  10. Disconnect hose assemblies (15) and (16). Push hose assemblies (15) and (16) through panel (17).


    Illustration 11g06034977

  11. Remove bolts (18) and panel (17).


    Illustration 12g06034978

  12. Remove bolts (20) and cover (19).


    Illustration 13g06034980

  13. Remove bolts (22) and cover (21)


    Illustration 14g06034994

  14. Disconnect hose assembly (23).

  15. Remove bolts (24) and disconnect tube assembly (25).


    Illustration 15g06034981

  16. Disconnect hose assemblies (26), (28), (29), and (30).

  17. Cut cable straps (27).


    Illustration 16g06034986

  18. Disconnect hose assembly (31) and harness assembly (33).

  19. Remove clips (32) .


    Illustration 17g06034988

  20. Remove bolts (34) and bracket (35).


    Illustration 18g06034989

  21. Remove bolts (36) and guard (37).

  22. Remove bolts (38) and guard (39).


    Illustration 19g06034990

  23. Remove bolt (40). Repeat this Step for the other side.


    Illustration 20g06034991

  24. Remove bolts (41). Repeat this Step for the other side.


    Illustration 21g06034992

  25. Remove panel (42) from the bottom of the machine.


    Illustration 22g06034995

  26. Attach Tooling (A), Tooling (B), and a suitable lifting device to main hydraulic pump (45). The weight of main hydraulic pump (45) is approximately 288 kg (635 lb).

  27. Remove bolts (44) and bracket (43).


    Illustration 23g06034996

  28. Remove remaining bolts (46).


    Illustration 24g06034997

  29. Use the suitable lifting device to remove main hydraulic pump (45).


    Illustration 25g06034998

  30. Position main hydraulic pump (45) on suitable cribbing, as shown.


    Illustration 26g06035978

  31. Remove fitting (48), bolts (47) and gear pump (49).

  32. Remove Bolts (50) and cover (51).

Installation Procedure

Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned in cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement.



    Illustration 27g06035978

  1. Install gear pump (49), bolts (47), and fitting (48).

  2. Install cover (51) and bolts (50).


    Illustration 28g06034997


    Illustration 29g06034995


    Illustration 30g06034996

  3. Use Tooling (A), Tooling (B), and a suitable lifting device to position main hydraulic pump (45) on the machine. The weight of main hydraulic pump (45) is approximately 288 kg (635 lb).

  4. Install bracket (43), bolts (44), and bolts (46).


    Illustration 31g06034992

  5. Install panel (42) on the bottom of the machine.


    Illustration 32g06034991

  6. Install bolts (41). Repeat this Step for the other side.


    Illustration 33g06034990

  7. Install bolt (40). Repeat this Step for the other side.


    Illustration 34g06034989

  8. Install guard (37) and bolts (36).

  9. Install guard (39) and bolts (38).


    Illustration 35g06034988

  10. Install bracket (35) and bolts (34).


    Illustration 36g06034986

  11. Install clips (32).

  12. Connect hose assembly (31) and harness assembly (33).


    Illustration 37g06034981

  13. Install cable straps (27).

  14. Connect hose assemblies (26), (28), (29), and (30).


    Illustration 38g06034994

  15. Connect tube assembly (25) and install bolts (24).

  16. Connect hose assembly (23).


    Illustration 39g06034980

  17. Install cover (21) and bolts (22).


    Illustration 40g06034978

  18. Install cover (19) and bolts (20).


    Illustration 41g06034977


    Illustration 42g06036636

  19. Install panel (17) and bolts (18).

  20. Pull hose assemblies (15) and (16) through panel (17) and connect hose assemblies (15) and (16).


    Illustration 43g01211523

  21. Install muffler support (14), engine lifting bracket (12), and bolts (13).


    Illustration 44g01211522

  22. Install bolts (11).


    Illustration 45g01211521

  23. Install bolts (10).


    Illustration 46g06034975

  24. Install bolts (9).


    Illustration 47g01211519

  25. Install panel (7), bolts (8), and bolt (6).


    Illustration 48g01211518

  26. Install bolts (5).


    Illustration 49g01211517

  27. Install bolts (4).


    Illustration 50g06034974

  28. Close door (3).


    Illustration 51g06034973

  29. Install step (2) and bolts (1).

  30. Fill the hydraulic system with oil. Refer to Operation and Maintenance Manual, "Refill Capacities".

    End By:

    a. Install the muffler.

    b. Install the hood.

Information System:

336D 2L and 340D 2L Excavators Machine Systems Pilot Valve (Travel) - Remove and Install
M314F and M316F Wheeled Excavators Hydraulic System Main Pump (Minimum Displacement) - Test and Adjust - Test without Flow Meter
303.5E2 CR Mini Hydraulic Excavator Machine ECM General Information
303.5E2 CR Mini Hydraulic Excavator Machine ECM Event Codes
Installation Procedure for the Hydraulic Hand Control Gp (Universal) {5063}
303.5E2 CR Mini Hydraulic Excavator Machine ECM Diagnostic Trouble Codes
336D 2L and 340D 2L Excavators Machine Systems Pilot Valve (Joystick) - Remove and Install
325F Excavator Machine Systems Final Drive - Assemble
325F Excavator Machine Systems Final Drive - Disassemble
538 Forest Machine Machine Systems Process for Setting Up the Work Tool
336D 2L and 340D 2L Excavators Machine Systems Hydraulic Tank - Remove and Install
725C, 725C2, 730C, 730C2 and 730C, 730C2 EJECTOR Articulated Truck Systems Gear Motor (Hydraulic Fan)
725C, 725C2, 730C, 730C2 and 730C, 730C2 EJECTOR Articulated Truck Systems Service Brake
725C, 725C2, 730C, 730C2 and 730C, 730C2 EJECTOR Articulated Truck Systems Service Brake
336D 2L and 340D 2L Excavators Machine Systems Control Manifold (Pilot Oil) - Remove and Install
DFS118, DFS121 and DFS124 Silage Defacers Lifting and Tying Down
GSH420, GSH425, GSH440, GSH520, GSH525, GSH455 and GSH555 Orange Peel Grapples Mounting Bracket - Remove and Install
415F2 Industrial Loader Machine Systems Pitch Cylinder (3-Point Hitch) - Remove and Install
415F2 Industrial Loader Machine Systems Lift Cylinder (3-Point Hitch) - Remove and Install
415F2 Industrial Loader Machine Systems Tilt Cylinder (3-Point Hitch) - Remove and Install
415F2 Industrial Loader Machine Systems 3-Point Hitch - Remove and Install
415F2 Industrial Loader Machine Systems Hitch Link (3-Point Hitch) - Remove and Install
415F2 Industrial Loader Machine Systems Pilot Valve (3-Point Hitch) - Remove and Install
415F2 Industrial Loader Machine Systems Bank Valve (3-Point Hitch) - Remove and Install