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M314F, M316F, M318F, M320F and M322F Wheeled Excavator and Material Handler Machine Systems Caterpillar


Piston Pump (Main Hydraulic) - Assemble

Usage:

M322F F2Z

Assembly Procedure

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Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
A  3E-3879  Eyebolt  1 
B  5P-7311  Puller Jaw  1 
C  1P-0510  Driver Gp  1 
E  -  Loctite 263  - 

Use The Following Table for Pump Assembly

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Table 2
Thread  Tightening Torque 
M4  4 N·m (34.5 lb in) 
M5  7.6 N·m (67.26 lb in) 
M6  13.2 N·m (116.82 lb in) 
M8  31.8 N·m (23.45 lb ft) 
M10  63 N·m (46.5 lb ft) 
M12  108 N·m (80 lb ft) 
M14  172 N·m (127 lb ft) 
M16  264 N·m (195 lb ft) 
M18  369 N·m (272 lb ft) 
M20  517 N·m (381 lb ft) 
M22  704 N·m (520 lb ft) 
M24  890 N·m (656 lb ft) 
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    Illustration 1g06038143

  1. Install swashplate limiters (95) and nuts (94) to the depth recorded during disassembly.

  2. Install dowels (93).
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    Illustration 2g06038136

  3. Install pin (92).

  4. Use a suitable press and Tooling (C) to install bearing (91).
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    Illustration 3g06038130

  5. Install port plate (89) and centering plate (90).
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    Illustration 4g06038120
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    Illustration 5g06038125

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

    Improper assembly of parts that are spring loaded can cause bodily injury.

    To prevent possible injury, follow the established assembly procedure and wear protective equipment.

  6. Install washer (88), spring (87), washer (86), and retaining ring (85).

  7. Use Tooling (C) and a suitable press to apply pressure onto washer (86) to install retaining ring (85) into barrel assembly (69).
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    Illustration 6g06038108

  8. Install alignment pins (83) into swashplate (70).

  9. Apply Tooling (E) onto throttle screws (84).

  10. Install throttle screws (84) into swashplate (70).

  11. Install pistons (80) into retainer plate (79).

  12. Install pistons (80) and retainer plate (79) onto the contact surface of swashplate (70).

  13. Install segments (82) and bolts (81) onto swashplate (70).
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    Illustration 7g06038103

  14. Install shims (78), retainer ball w/springs (77), and swashplate (70) into barrel assembly (69).
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    Illustration 8g06038090

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

    Improper assembly of parts that are spring loaded can cause bodily injury.

    To prevent possible injury, follow the established assembly procedure and wear protective equipment.

  15. Install O-ring seal (76) and new Teflon seal (75) onto counter-piston (72).
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    Illustration 9g06038087

  16. Install O-ring seal (74) and new Teflon seal (73) onto stroking piston (71).
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    Illustration 10g06038076

  17. Install swashplate (70) onto barrel assembly (69).

  18. Install stroking piston (71) and counter-piston (72) into swashplate (70).
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    Illustration 11g06037858
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    Illustration 12g06033765

    Note: When inserting the rotary group, the counter-piston must be carefully inserted into the appropriate running bushing and the counter piston must be guided through the bore in the centering plate and inserted into its bushing. Line up the hole in the counter-piston with the access hole for the control assembly installation.

  19. Install Tooling (B) into barrel assembly (69). Use a suitable lifting device to install barrel assembly (69). Lifting barrel assembly in this state weighs approximately 27.2 kg (60 lb).

  20. Remove Tooling (A) from barrel assembly (69).
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    Illustration 13g06037851

  21. Install gasket (67) onto pump body (68).
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    Illustration 14g06038192
    Show/hide table
    Illustration 15g06038195

  22. Use suitable press to install bearing (66) onto shaft assembly (62).

  23. Install retaining ring (65) onto shaft assembly (62).
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    Illustration 16g06037690

  24. Install shaft assembly (62) into bearing flange (64).

  25. Install hold down screws (61).

  26. Apply Tooling (E) onto screws (63).

  27. Install bearings (64) and screws (63).
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    Illustration 17g06037688

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

    Improper assembly of parts that are spring loaded can cause bodily injury.

    To prevent possible injury, follow the established assembly procedure and wear protective equipment.

  28. Use Tooling (A) and a suitable lifting device to install flange assembly (60). The weight of flange assembly (60) is approximately 36 kg (80 lb).

  29. Install bolts (59) into flange assembly (60).
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    Illustration 18g06037687

  30. Install piston pad (59) into bushing (58).
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    Illustration 19g06037686

  31. Install bushing (58).
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    Illustration 20g06037684
    Show/hide table
    Illustration 21g06037685

    Show/hide table
    ------ WARNING! ------

    Improper assembly of parts that are spring loaded can cause bodily injury.

    To prevent possible injury, follow the established assembly procedure and wear protective equipment.

  32. Install lever (48), O-ring seal (57), pin (56), and setscrew (55) into control assembly (35).

  33. Install pin (49), spool (50), adapter (51), spring (52), O-ring seal (53), and plug (54) into control assembly (35).

  34. Install spring adapter (46), spring (45), spring (44), O-ring seal (43), and adapter (42) into control assembly (35).

  35. Install nut (41), adjustment screw (40), and cap (39) onto adapter (42).

  36. Install pins (38), gasket (37), and elbow assembly (36) onto control assembly (35).
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    Illustration 22g06037683

  37. Install control assembly (35) and bolts (34).
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    Illustration 23g06037682

  38. Install rings (33) onto sleeve assembly (26).
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    Illustration 24g06037680
    Show/hide table
    Illustration 25g06037678

    Show/hide table
    ------ WARNING! ------

    Improper assembly of parts that are spring loaded can cause bodily injury.

    To prevent possible injury, follow the established assembly procedure and wear protective equipment.

  39. Install spring (27) and guide (28) into the control assembly.

  40. Install cup (29), spring (30), spool (31), and spring (32) into sleeve assembly (26).

  41. Install sleeve assembly (26). Apply downward pressure to sleeve assembly (26) to install setscrew (27) and nut (28) in the hole in sleeve assembly (26).
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    Illustration 26g06037677

  42. Install O-ring seal (26) into block (25).
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    Illustration 27g06037676

  43. Install block (25) and bolts (24).
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    Illustration 28g06037674

  44. Install cartridge assembly (23), the O-ring seal, and solenoid assembly (22). Tighten cartridge assembly to a torque of 19 ± 0.5 N·m (168.00 ± 4.40 lb in).
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    Illustration 29g06037673

  45. Install the O-ring seal and nut (21).
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    Illustration 30g06037671

  46. Rotate the pump with the shaft pointing downwards.

  47. Install adapter (19), plug (20), and the O-ring seals.
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    Illustration 31g06037670

  48. Install plate (18), screws (17), and the O-ring seal.
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    Illustration 32g06037663

  49. Install cover (16), bolts (15), and the O-ring seal.
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    Illustration 33g06037667
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    Illustration 34g06037669

  50. Install screen (14) as shown.

  51. Install plugs (11), (12), (13), and the O-ring seals.
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    Illustration 35g06037664

  52. Install plug (9) and the O-ring seal.

  53. Install Elbow assembly (10) and the O-ring seal.
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    Illustration 36g06037659

  54. Install O-ring seal (8) onto flange (7).
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    Illustration 37g06037661

  55. Install flange (7), bolts (4), and O-ring seal (5).

  56. Install adapter (6).
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    Illustration 38g06037657

  57. Install hub (1), washer (2), and bolt (3).

End By:

  1. Install the piston pump.

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