Main Hydraulic Pump - Disassemble
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374F Excavator Machine Systems
[UENR0163]
374F Excavator Machine Systems
Window Wiper Motor - Remove and Install
374F Excavator Machine Systems
Main Hydraulic Pump - Assemble
HYDRAULIC SYSTEM
PUMP GP
374F Excavator Machine Systems
Main Hydraulic Pump - Remove and Install
374F Excavator Machine Systems
Gear Pump (Pilot) - Disassemble
374F Excavator Machine Systems
Gear Pump (Pilot) - Assemble
374F Excavator Machine Systems
Main Hydraulic Pump - Disassemble
374F Excavator Machine Systems
Main Hydraulic Pump - Assemble
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Required Tools | |||
---|---|---|---|
Tool | Part Number | Part Description | Qty |
A | 5P-7311 | Puller Jaw | 1 |
B | 1P-0510 | Driver Gp | 1 |
C | 123-6702 | Clamping Segment | 1 |
D | 4C-5649 | Adapter | 1 |
1P-0074 | Slide Hammer Puller Gp | 1 | |
E | 395-1592 | Lifting Eye Assembly | 1 |
F | 1P-7409 | Eyebolt | 1 |
Start By:
- Remove the piston pump.
- Loosen nut (1) and rotate elbow (2).
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Illustration 2 g06030109 - Remove bolts (3) and control assembly (4).
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Illustration 3 g06030110 - Remove bolts (5) and control assembly (6).
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Illustration 4 g06030111 - Remove bolts (7), plate (10), and spacers (8).
- Remove position sensor (9).
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Illustration 5 g06030112 - Remove O-ring seal (11) from position sensor (9).
- Repeat Steps 4 through 6 for the remaining position sensor.
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Illustration 6 g06030113 - Remove retaining ring (12) and cover (13).
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Illustration 7 g06030114 Show/hide tablePersonal injury can result from being struck by parts propelled by a released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to release the spring force.
- Remove O-ring seal (14) from bearing flange (15).
- Remove bolts (16) from bearing flange (15).
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Illustration 8 g06030115 - Use a suitable lifting device to remove bearing flange (15). The weight of bearing flange (15) is approximately
32 kg (70 lb) .Show/hide tableIllustration 9 g06030116 - Raise temperature of bearing flange (15) to remove screws (17). Remove bearings (18) from bearing flange (15).
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Illustration 10 g06030118 - Remove stop screws (19) and shaft assembly (20) from bearing flange (15).
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Illustration 11 g06030119 - Remove retaining ring (21) from shaft assembly (20).
- Use a suitable press to remove bearing spacer (22) and bearing (23) from shaft assembly (20).
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Illustration 12 g06031210 - Install Tooling (A) into barrel assembly (24). Use a suitable lifting device to remove barrel assembly (24). Lifting barrel assembly in this state weighs approximately
36 kg (80 lb) . - Remove Tooling (A) from barrel assembly (24).
- Remove gasket (25).
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Illustration 13 g06044927 - Removing stroking piston (26) and counter-piston (27) from barrel assembly (24).
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Illustration 14 g06044935 - Remove used Teflon seal (28) and O-ring seal (29) from stroking piston (26).
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Illustration 15 g06044940 - Remove used Teflon seal (30) and O-ring seal (31) from counter-piston (27).
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Illustration 16 g06044947 - Remove screws (32) and port plate (33).
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Illustration 17 g06044957 - Use Tooling (C) to remove locator bushings (34).
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Illustration 18 g06044963 - Remove retaining rings (36) from locator bushings (35).
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Illustration 19 g06044966 - Remove bolts (37) and pump insert (38).
- Remove centering plate (39).
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Illustration 20 g06044970 - Use a suitable press and Tooling (B) to remove bearing (40) from pump insert (38).
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Illustration 21 g06044976 - Remove coupler (41), retaining ring (42), and impeller wheel (43).
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Illustration 22 g06044979 - Use Tooling (D) to remove dowels (44).
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Illustration 23 g06044981 - Install Tooling (E) into shaft assembly (45).
- Use Tooling (E) and a suitable lifting device to place the pump with the shaft pointing upwards. The pump assembly at this point weighs approximately
204 kg (450 lb) .Show/hide tableIllustration 24 g06044985 Show/hide tablePersonal injury can result from being struck by parts propelled by a released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to release the spring force.
- Remove bolts (46) from bearing flange (47).
- Use Tooling (F) and a suitable lifting device to remove bearing flange (47). The weight of bearing flange (47) is approximately
36 kg (80 lb) .Show/hide tableIllustration 25 g06044988 - Raise the temperature of bearing flange (48) to remove screws (49) and bearings (50).
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Illustration 26 g06044990 - Remove stop screws (51) from bearing housing (48).
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Illustration 27 g06044993 - Use a suitable press to remove shaft assembly (45) from bearing flange (48).
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Illustration 28 g06044996 - Remove retaining ring (52) from shaft assembly (45).
- Use suitable press to remove bearing spacer (53) and bearing (54) from shaft assembly (45).
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Illustration 29 g06044998 - Install Tooling (A) into barrel assembly (55). Use a suitable lifting device to remove barrel assembly (55). Lifting the barrel assembly in this state weighs approximately
36 kg (80 lb) . - Remove Tooling (A) from barrel assembly (55).
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Illustration 30 g06045003 - Removing stroking piston (56) and counter-piston (57) from barrel assembly (55).
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Illustration 31 g06045006 - Remove used Teflon seal (58) and O-ring seal (59) from stroking piston (56).
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Illustration 32 g06045008 - Remove used Teflon seal (60) and O-ring seal (61) from counter-piston (57).
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Illustration 33 g06045011 - Remove gasket (62), screws (63), and port plate (64).
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Illustration 34 g06045016 - Remove bolts (65) and pump insert (67).
- Remove centering plate (66).
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Illustration 35 g06045020 - Use a suitable press and Tooling (B) to remove bearing (69) from pump insert (68).
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Illustration 36 g06045022 - Use Tooling (D) to remove dowels (70).
- Measure and note the dimensions of swashplate setscrews (71) for the later installation.
- Remove swashplate setscrews (71).
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Illustration 1 | g06030108 |
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