PUMP GP-PISTON 4547240 - Caterpillar

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Type B
Remove retaining rings (4), screws (5), and plate (3).
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Type A
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Type B
Pullout and attach a suitable lifting device to remove pin (6). Refer Table 4 for weight of pin (6).
Table 4
Weight of Pin (6)
Sales Model Pin (6) Weight
S2050 45 kg (99 lb)
S2070 64 kg (141 lb)
S2090 76 kg (168 lb)
Release the hydraulic system pressure in accordance with the host machine Operation and Maintenance Manual.
Illustration 7 g06208287Note: The hoses are bent into a tight radius and can spring outward when disconnected with a potential to cause harm if precautions are not taken.
Disconnect hose assembly (7). Repeat for the other side.
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Type A
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Type B
Remove retaining rings (9), screws (10), and plate (8).
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Type A
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Type B
Pullout and attach a suitable lifting device to remove pin (11). Refer Table 5 for weight of pin (11).
Table 5
Weight of Pin (11)
Sales Model Pin (11) Weight
S2050 75 kg (165 lb)
S2070 101 kg (223 lb)
S2090 120 kg (265 lb)
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Attach Tooling (B) and a suitable lifting device to remove cylinder assembly (1) . Refer Table 2 for the weight of cylinder assembly (1). Remove cylinder assembly (1).
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Use Tooling (C) to remove bushings (12). Attach a suitable lifting device to Tooling (C). The weight of Tooling (C) is approximately 113 kg (250 lb). Remove bushings (12)Installation Procedure
Table 6
Required Tooling
Tool Part Number Part Description Qty
D - Loctite 243 -
Install hydraulic cylinder assembly (1) in the reverse order of the removal procedure.
Apply Tooling (D) to the thread of screws (5). Tighten screws (5) to a torque of 120 20 N m (89 15 lb ft).
Apply Tooling (D) to the thread of screws (9). Tighten screws (10) to a torque of 120 20 N m (89 15 lb ft).