926M, 930M and 938M Wheel Loaders Power Train Caterpillar

Piston Motor (Hydrostatic) - Assemble - Rear Hydrostatic Piston Motor

Usage:

930M HEY

Assembly Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	1U-6340	Threaded Rod	1
B	126-7176	Forcing Screw	1
	3H-0465	Push-Puller Plate	4
	4C-5658	Threaded Adapter	1
	8B-7548	Push-Puller Tool Gp	1
	8B-7550	Push Puller Leg	2

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Illustration 1	g02796608

Connect piston assembly (43) to shaft assembly (38). Install bolts (42). Tighten bolts (42) to a torque of 9 ± 1 N·m (80 ± 9 lb in).
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Illustration 2 g02796573
Install shim (36) and spring (35) into barrel (34).
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Illustration 3 g02804497

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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.
Use Tooling (A) in order to help install barrel (34) onto piston assembly (43) and shaft assembly (38).
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Illustration 4 g02796607
Install lip seal (41), washer (40), and retaining ring (39).
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Illustration 5 g02796751
Install shaft assembly (38) into housing (37).
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Illustration 6 g02804558
Use Tooling (B) in order to seat shaft assembly (38) into the housing.
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Illustration 7 g02804576
Remove Tooling (A) and Tooling (B).
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Illustration 8 g02804658
Install O-ring seal (33).
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Illustration 9 g02796553
Install nut (32). Tighten nut (32) to a torque of 69 ± 15 N·m (51 ± 11 lb ft). Ensure that Dimension (Y) is maintained.
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Illustration 10 g02796549
Install cap (31).
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Illustration 11 g02796543
Install swashplate (30).
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Illustration 12 g02796538
Install piston (29) and trunnion (28).
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Illustration 13 g02796531
Install pump head (27) and bolts (26). Tighten bolts (26) to a torque of 310 ± 30 N·m (230 ± 22 lb ft).
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Illustration 14 g02796525
Install spring (25) and O-ring seals (24).
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Illustration 15 g02796495
Install spring (23).
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Illustration 16 g02796448
Install nut (22). Tighten nut (22) to a torque of 10 ± 1 N·m (89 ± 9 lb in). Ensure that Dimension (X) is maintained.
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Illustration 17 g02796417
Install cap (21).
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Illustration 18 g02796392
Install retainer (20), bushing (19), dowel (18), spring (17), and O-ring seal (16).
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Illustration 19 g02796381

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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 valve (15) and bolts (14). Tighten bolts (14) to a torque of 37 ± 5 N·m (27 ± 4 lb ft).
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Illustration 20 g02797655
Install valve (13).
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Illustration 21 g02796371
Install plunger (12). Tighten plunger (12) to a torque of 10 ± 3 N·m (89 ± 27 lb in).
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Illustration 22 g02794585
Install nut (11). Tighten nut (11) to a torque of 5 ± 1 N·m (44 ± 9 lb in).
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Illustration 23 g02794580
Install Alan pin (10) (not shown). Tighten Alan pin (10) to a torque of 52 N·m (38 lb ft)
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Illustration 24 g02794577
Install piston (9).
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Illustration 25 g02794574
Install bolt (8). Tighten bolt (8) to a torque of 120 ± 20 N·m (89 ± 15 lb ft). Install O-ring seal (7).
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Illustration 26 g02794571
Install O-ring seal (6) onto valve (4).
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Illustration 27 g02803836
Install valve (4). Tighten the bolts for valve (4) to a torque of 130 N·m (96 lb ft).
Install the O-ring seal and plug (5). Tighten plug (5) to a torque of 100 N·m (74 lb ft).
Install the O-ring seal and plug (3). Tighten plug (3) to a torque of 130 N·m (96 lb ft).
Install the O-ring seal and plug (2). Tighten plug (2) to a torque of 112 N·m (83 lb ft).
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Illustration 28 g02794487
Install the O-ring seal and plug (1). Tighten plug (1) to a torque of 35 N·m (26 lb ft).