Graco 218334, Instructions Manual

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Maintenance and Repair
10 307714E
wear or damage. Remove the air manifold gaskets
(91). Replace any worn parts.
13. Remove the trip rod nut (106) and the lock washer
(86) from the trip rod (43a). Pull the air valve hous-
ing (102) up off the trip rod.
14. Pull the trip rod and piston assembly (43) up as far
as possible.
15. Grip the trip rod (43a) below the bushing (95) with a
padded pliers, and screw the bushing off the trip
rod.
NOTE: Special care to avoid damaging the plated
surface of the trip rod must be taken. A padded pli-
ers, part number 207579 is available from Graco.
16. Remove the thrust washer (96) and dampening pad
(97) from the air motor cylinder (104).
17. Remove the eight screws (105) and lockwashers
(68) holding the air motor cylinder to the base (46).
18. Carefully pull the air motor cylinder (104) straight
up off the air motor base (46) and trip rod and piston
assembly (43a).
NOTE: Be careful not to tilt the cylinder as this could
damage the smooth inner surface.
19. Check piston o-ring (69) for wear or damage and
replace if necessary. The diameter of the o-ring is
larger than that of the piston. Inspect the cylinder
gasket (103) and replace as necessary.
F
IG
. 4 Torque Key
1 Torque to 25 ft. lbs (34 N.m)
2
Torque to 20-25 ft. lbs (27-34 N.m)
F
IG
. 4
74
75
73
117
77
78
79
80
81
110
52
82
83
84
85
1
86
87
42
101 88
89
90
97
96
106
2
86
92 93
94
102
95
96
97
98
100
71
99
107
105
1
68
104
103
69
43
46
44
43a
45
67