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7. Pull up on the valve housing (23) to raise the trip
rod (63). Grip the rod below the bushing (45) with
padded pliers. Remove the trip rod nut (46), lock-
washer (10), valve housing (23), and bushing (45)
from the rod. See Fig. 5.
CAUTION
Take special care to avoid damaging the plated
surface of the trip rod (63), which would restrict its
free movement. Special padded pliers, Part No.
207–579, is available. See Accessories.
8. Remove the gasket (48) and bumper (73).
9. Remove the trip rod bearing (5) using a 1 in. deep
well socket wrench. Remove the gasket (75),
packing (32), and backup washer (74).
Lubricate with light
waterproof grease.
Torque to 34 N.m
(25 ft–lb).
Lubricate inside walls
with waterproof grease.
Lips must face down,
out of bearing (5).
Ribs must
face up.
63
14
65
64
Fig. 5
Service
10. Remove the screws (14) and lockwashers (65)
11. Check the throat v-packing (33) while in place. If
46
10
23
45
48*
73
5
75
74
32
27
61
Fig. 6
holding the air cylinder (27) to the base (61), and
pull the cylinder straight up off the piston (64). Be
careful not to tilt the cylinder since this could dam-
age the smooth inner surface. Lift the piston (64)
straight up, being careful not to tilt it until the piston
tube clears the base (61). Remove the piston o-
ring (17) and base gasket (44) and check for wear
or damage. See Fig. 6.
replacing the packing (33), remove the old packing
and the backup (37). See Fig. 3.
Lubricate with light
waterproof grease.
63
64
17*
42
44
61
16*
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