PISTON 3111531 - Caterpillar

Disassembly Procedure
Table 1
Required Tools    
Tools     Part Number     Part Description     Qty    
A     136-1452     Retaining Ring Pliers     1    
B     8B-7552     Forcing Bolt     1    
3H-0465 Push-Puller Plate     5    
1B-4206 Nut     1    
5P-4808 Cap     2    
8B-7548 Push-Puller Tool Gp     1    
8B-7550 Push-Puller Leg     2    
1B-4207 Full Nut     2    
8B-7556 Adapter     1    
8B-7555 Adapter     2    
0S-1575 Bolt     2    
5H-1504 Hard Washer     2    Start By:
Remove the vibratory motor. Refer to Disassembly and Assembly, "Piston Motor (Vibratory) - Remove".
Dirt can damage precision made parts of the motor. Disassemble the motor on a clean work surface. Clean all the parts seperately in clean solvent and let the parts dry at room temperature. Check the condition of all parts and refer to Guidelines for Reusable Parts, SEBF8032, "Piston Pumps and Motors".
Illustration 1 g00832922
Remove four bolts (14) and remove flushing valve (8) from rear cover plate (4) .
Illustration 2 g00832924
Use the following procedure to disassemble the flushing valve (8) .
Remove two O-ring seals (24) and O-ring seal (18) from valve body (25) .
Remove plug (15), spring (23) and guide (17) from valve body (25). Remove O-ring seal (16) from plug (15) .
Remove plug (22), spring (26), guide (20) and spool (19) from valve body (25). Remove O-ring seal (21) from plug (22) .
Remove plug (31), spring (28) and piston valve (27) from valve body (25) .
Remove O-ring seal (30) and shim (29) from plug (31) .
Illustration 3 g00832925
Remove retaining ring (33) and remove orifice (32) from piston valve (27) .
Put tape around the splined drive shaft in order to prevent damage to the drive shaft or the seals during disassembly of the vibratory motor.
Tap front cover (10) with a plastic hammer in order to release some of the pressure against the retaining ring (11). Use Tool (A) in order to remove retaining ring (11) from housing (2) .
Remove front cover (10), O-ring seal (9) and shim (6) from housing (2).
Remove lip type seal (7) from front cover (10) .
Put alignment marks on rear cover plate (4 ) and housing (2) for assembly purposes.
Remove six bolts (5), and remove rear cover plate (4) from housing (2) .
Remove O-ring seal (3) from housing (2) .
Remove dowel pin (13) from the rear cover plate.
Remove the control plate from the end of rotating group (1). The control plate is serviced as part of the rotating group.
Illustration 4 g00832926
Attach Tooling (B) to housing (2) and rotating group (1), as shown.
Use Tooling (B) to remove rotating group (1) from the housing. The cylinder barrel must not bind while the cylinder barrel is pulled through the housing.
Illustration 5 g00832928
Remove cylinder barrel (36), spacer (35) and spring (34) from the rotating group. The cylinder barrel, the spacer, and the spring are serviced as part of the rotating group.
Illustration 6 g00833018
Remove screws (37), pistons (38) and the