HOUSING ASSEM. 8S4678 - Caterpillar

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Use a soft faced hammer in order to remove shaft assembly (71) .
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Remove retaining ring (72) .
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Use a suitable press and remove shaft assembly (71) from bearing (73) .
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Secure remaining pumps onto Tooling (A) or a suitable bench. Use Tooling (D) in order to remove bushing (74) .
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Remove block (75). Use Tooling (E) in order to remove bearing (76) from block (75). Remove coupler (77) .
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Remove retaining ring (78) and impeller (79) .
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Remove retaining ring (80) .
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Personal 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.
Use Tooling (C) in order to remove bolts (81) from pump housing (83) .
Use Tooling (B) and a suitable lifting device to separate head (82) from pump housing (83). The weight of head (82) is approximately 64 kg (140 lb).
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Use Tooling (E) in order to remove bearing (84) from head (82) .
Repeat Steps 9 through Steps 22 for the input pump.
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Use Tooling (F) in order to remove retaining ring (85) and cover (86) .
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Remove O-ring seal (87). Use a soft faced hammer to remove shaft assembly (88) .
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Remove retaining ring (89) from shaft assembly (88) .
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Use a suitable press in order to remove shaft assembly (88) from bearing (90) .Note: After disassembly has been completed, check the condition of all the components. Refer to Guideline For Reusable Parts, SEBF8032, "Piston Pumps and Motors".