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12 307741
Service
NOTE: Refer to Fig. 5 for steps 12 to 18.
12. Remove the rubber pad (8) from the cylinder (36).
Remove the trip rod bearing (37), using a 1 in.
deep-well socket wrench. Remove the gasket (66),
v-block packing (65), and backup washer (64) from
the bearing.
CAUTION
Be careful not to tilt the cylinder when removing it
from the piston to avoid damaging the smooth inner
surface of the cylinder.
13. Remove the screws (31) and lockwashers (13) and
carefully pull the cylinder straight up off the piston
(34).
14. Pull the piston (34) and trip rod (40) up out of the
base (47). Remove the o-ring (33) from the piston.
NOTE: The connecting rod stud (39) is fastened to the
piston shaft (34) with anaerobic sealant, and may be
difficult to remove.
CAUTION
Be careful not to damage the polished surface of the
piston shaft.
15. Lock the hex of the piston shaft (34) in a vise and
unscrew the connecting rod stud (39) from the
piston shaft.
CAUTION
Handle the trip rod assembly (40) carefully. Nicks
and scratches cause premature spring failure.
NOTE: A damaged trip rod cannot be repaired; use a
new one.
16. Remove the trip rod (40) from the piston (34).
17. Remove the v-block packing (46), backup washer
(45), o-ring (41), and gasket (35) from the base
(47).
18. Turn the base over and remove the wiper seal
(44). Inspect the bearing (70) in place. Remove
only if damaged.