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

Piston Pump (Fan) - Disassemble

Usage:

Disassembly Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	1P-0510	Driver Gp	1
B	9S-9152	Bearing Puller	1

Start By:

Remove the piston pump (fan).

Be sure that the outside of the piston pump is thoroughly clean prior to disassembly.
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Illustration 1 g03831856
Remove cap (1) and cartridge (2).
Remove screws (4) and pump control valve (3).
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Illustration 2 g03831881

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Sudden release of spring force can cause injury.
To prevent the possibility of injury, follow the procedure to relieve the spring pressure.
Remove plug (5), spring (7), guide (8), and spool (9) from compensator valve (3). Remove O-ring seal (6) from plug (5). Remove plug (13), spool (16), guide (17), spring (18) and guide (19), from compensator valve (3). Remove O-ring seal (14) and seal (15) from plug (13). Remove plug (11) from compensator valve (3). Remove seal (10), cap (20), and nut (12) from plug (11).
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Illustration 3 g03831887

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Sudden release of spring force can cause injury.
To prevent the possibility of injury, follow the procedure to relieve the spring pressure.
Remove bolts (6) and head (5).
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Illustration 4 g03831894
Remove O-ring seal (7), port plate (9), and bearing cup (8).
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Illustration 5 g03831902
Remove bearing cone (10), shim (11), and O-ring seal (12).
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Illustration 6 g03831910
Remove rotating group (14) from housing (13).
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Illustration 7 g03831926

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Illustration 8 g03831984

Note: Mark the location of pistons for assembly purposes.
Remove plate (16) and pistons (15) from barrel (17). Remove retaining ball (18).
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Illustration 9 g03831990

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Illustration 10 g03831995

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Sudden release of spring force can cause injury.
To prevent the possibility of injury, follow the procedure to relieve the spring pressure.
Use Tooling (A) and a suitable press in order to compress spring (20). Remove retaining ring (19), spring (20), and retaining disc (21) from barrel (17).
Remove pressure pins (22) from barrel (17).
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Illustration 11 g03831988

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Sudden release of spring force can cause injury.
To prevent the possibility of injury, follow the procedure to relieve the spring pressure.
Remove plug (22) and the O-ring seal.
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Illustration 12 g03832010
Remove piston (23).
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Illustration 13 g03832017
Remove swashplate (24) and spring (25).
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Illustration 14 g03832025
Remove shaft assembly (27). Remove screws (28) and bearings (26).
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Illustration 15 g03832035
Use Tooling (B) and a suitable press to remove bearing cone (30) from shaft (29).
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Illustration 16 g03832044
Remove plug (31) and the O-ring seal.
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Illustration 17 g03832049

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Illustration 18 g03832057

Note: Damage may occur to ring (34) upon removal of lip seal (33).
Remove retaining ring (32). Use Tooling (A) to remove lip seal (33).
Remove bearing cup (35) and ring (34) from housing (13).