EXTENSION GP-EXHAUST 3215150 - Caterpillar

Disassembly Procedure
Start By:
Remove the pilot valve.
Illustration 1 g02118894
Remove bellows (1).
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Remove setscrew (2), camshaft (4), and pedal (3).
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Remove nuts (6) and setscrews (5) from pedal (3).
Illustration 4 g02118897
Remove bolt (7) and cover (8).
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Remove bushings (9) from cover (8).
Illustration 6 g02118899
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.
Remove bolts (10) and cover (11).
Remove plug assemblies (12).
Illustration 7 g02118900
Remove piston (18) from pushrod (17).
Remove pushrod (17) from plug (14).
Remove O-ring seal (15) and cap (13) from plug (14).
Remove packing (16) from plug (14).
Illustration 8 g02118913
Remove inner spring (19), outer spring (20), seat (21), and balls (22).
Illustration 9 g02119195
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.
Remove bolts (23), valve assembly (24), O-ring seals (26), and O-ring seals (28).
Remove spool assembly (25) and spring (27).
Illustration 10 g02119196
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.
Apply pressure to seat (29) by hand. Put the end of spool (33) in the slotted opening of seat (29). Remove seat (29).
Remove spring (30), washer (31), and washer (32) from spool (33).
Illustration 11 g02119197
Remove plug (34), O-ring seal (35), seat (36), ball (37), and bushing (38) from the body assembly.
Remove plugs (39).