SEAL KIT- 1328491 - Caterpillar

Disassembly Procedure
Table 1
Required Tools    
Tool    Part Number    Part Description    Qty    
A     6V-8336     Bolt
M12 - 1.75 by 70mm     2    Start By:
Remove the counterbalance valve. Refer to Disassembly and Assembly, "Counterbalance Valve (Travel) - Remove".
Keep all parts clean from contaminants.Contamination of the hydraulic system with foreign material will reduce the service life of the hydraulic system components.To prevent contaminants from entering the hydraulic system, always plug or cap the lines, fittings, or hoses as they are disconnected. Cover any disassembled components and clean them properly before assembly.Clean the hydraulic system properly after any major component exchange or especially after a component failure, to remove any contamination.
Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
Illustration 1 g00901466
Remove plugs (1) from counterbalance valve (3). Remove O-ring seals (2) from plugs (1) .
Illustration 2 g00901497
Remove relief valves (4) from counterbalance valve (3) .
Disassemble relief valves (4) in the following manner:
Illustration 3 g01368449
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 backup rings (11) and O-ring seal (12) .
Remove O-ring seal (13) .
Remove nut (16) .
Remove screw (15) and stop (10) from body (14) .
Remove backup ring (8) and O-ring seal (9) from stop (10) .
Remove piston (5) from body (14) .
Remove backup rings (6) and O-ring seal (7) from piston (5) .
Repeat Steps 3.a through 3.g for the remaining relief valve.
Illustration 4 g01368450
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 two of bolts (17). Install Tooling (A ) into the bolt holes evenly in order to relieve spring pressure. Do not tighten Tooling (A). Remove the remaining bolts (17). Remove Tooling (A). Remove cover (18) .
Illustration 5 g01368455
Illustration 6 g01368493
Remove sleeve (22) and spring (21) from counterbalance valve (3) .
Remove spacer (19) and spool (20) from the counterbalance valve.
Repeat Steps 4 through 6 for the remaining cover.