Graco Inc 235525, 307741, 237000, 220106, 03695A manual Service

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.

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