RING-RETAINING 7Y4631 - Caterpillar

Illustration 13 g03440242
Illustration 14 g03440240
Install retaining ball (19). Install retaining plate (16) with pistons (17) in barrel (18).Note: Set bearing preload before you install the rotating group. The bearing preload should be 0.00 to 0.05 mm (0.000 to 0.002 inch).
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Do not install shim (14). Install bearing cone (12) onto shaft (11). Assemble the pump without shim (14) to check the preload of the bearing cone.
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Install port block (8) and bolts (7) on pump housing (6). Tighten bolts (7) to a torque of 165 N m (122 lb ft).
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Install Tooling (B) onto pump housing (6). Use the dial indicator to determine the end play of shaft (11).
Be sure that you move shaft (11) completely in both directions. Use appropriate tools to move shaft (11).
The thickness of shim (14) (not shown) should equal the end play measurement plus 0.05 mm (0.002 inch). For example, if the end play is 2.16 mm (0.085 inch) then the shim thickness should be 2.21 mm (0.087 inch).
Record the measurement.
If necessary, grind or replace the shim to meet the determined measurement.
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Remove bolts (7), port block (8), and the bearing cone from pump housing (6).
Illustration 19 g03441277Note: All parts must be in the proper position.
Wrap the pistons (17) with string but do not tie the string. Hold the string tight and carefully install rotating group (15) in housing (6). The splines on shaft (11) must engage with splines in retaining ball (19).
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Install shim (14) onto shaft (11).
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Install bearing cone (12) on shaft (11). Install O-ring seals (13).
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Install O-ring seal (9) and port plate (10) to the port block (8).
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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.
Install port block (8) and bolts (7) on pump housing (6). Tighten bolts (7) to a torque of 165 N m (122 lb ft).
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Install solenoid (4) and nut (5) onto compensator valve (2).
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Install compensator valve (2) bolts (1), gasket (3), and the O-ring seals. Tighten bolts (1) to a torque of 15.5 1.5 N m (137.18 13.28 lb in). End By:
Install the piston pump (Hydraulic Fan).