SEAL & 4V9515 - Caterpillar

Use a screwdriver to depress spool (25) slightly.
Remove the punch from the hole for pin (26) .
Slowly remove the screwdriver that is depressing spool (25) to relieve the spring pressure that is against spool (25) .
Remove spool (25) from valve (11) .
Illustration 15 g00521511
Remove spring (27) from valve (11) .
Remove slug (28) from spool (25) .
Illustration 16 g00521512
Invert valve (11) .
Remove piston (29) from valve (11) .
Illustration 17 g00521513
Remove spacer (30) from the inside diameter of piston (29) .
Remove spring (31) and spring (32) from valve (11) .Note: Use a punch or a screwdriver to keep the outside diameters of spool (33) aligned with the bore of the valve. Avoid damaging or scratching the highly finished surface of spool (33) and the bore of valve (11) .
Remove spool (33) from valve (11) .
Illustration 18 g00520040
Sudden release of spring force can cause injury.To prevent the possibility of injury, follow the procedure to relieve the spring pressure.
Remove slug (34) from spool (33) .
Support retainer (37). Remove retainer ring (38). Remove retainer (37), spring (36), and ball (35) from spool (33) .
Illustration 19 g00520041
Remove stop (39) and spool (40) from valve (11) .
Illustration 20 g00520047
Illustration 21 g00520051
Sudden release of spring force can cause injury.To prevent the possibility of injury, follow the procedure to relieve the spring pressure.
Support two retainers (42) and spring (43). Remove retaining ring (41), retainer (42), spring (43), and retainer (42) from spool (40) .
Illustration 22 g00520052
Remove plate (12) from valve (44) .
Remove two plugs (45) from plate (12). Remove the O-ring seals from plugs (45) .
Illustration 23 g00520053
Remove the bolts and cover (46) from valve (44).
Illustration 24 g00520054
Remove O-ring seal (47) from underneath cover (46) .
Remove stop (48) from valve (44) .
Remove spool (52) from valve (44) .
Sudden release of spring force can cause injury.To prevent the possibility of injury, follow the procedure to relieve the spring pressure.
Support two retainers (50) and spring (51). Remove retainer ring (49), retainer (50), spring (51), and retainer (50) from spool (52) .