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Repair
308777L 11
6. Use a screw driver to push down on the trip rod
yoke (14) and snap the toggle assemblies (K) down.
See F
IG. 5. Remove the lock wires (28) from the
adjusting nuts (27) of the transfer valves (M). Screw
the top adjusting nuts (27) off. Screw the valve
stems (30) out of the grommets (18) and lower
adjusting nuts (27). Take the valve poppets (37) off
the stems and squeeze them firmly to check for
cracks.
7. Grip the toggle rockers (16) with a pliers. Compress
the springs (17) and swing the toggle assembly (K)
up and away from the piston lugs (L), and remove
the parts. Check that the valve actuator (13) is sup-
ported by the spring clips (4), but slides easily into
them. (F
IG. 5)
8. Remove the trip rod yoke (14), valve actuator (13)
and trip rod (1). Check the exhaust valve poppets
(38) for cracks.
NOTE: To remove the exhaust valve poppets (38),
stretch them out and cut with a sharp knife.
9. Pull the piston (5) up out of the base (56) and
inspect the piston o-ring (20) and the o-ring in the
base casting.
Reassembly
1. Clean all the parts carefully in a compatible solvent
and inspect for wear or damage. Use all the repair
kit parts during reassembly and replace other parts
as necessary.
2. Check the polished surfaces of the piston, piston rod
and cylinder wall for scratches or wear. A scored rod
will cause premature packing wear and leaking.
3. Lubricate all parts with a light, water-resistant
grease.
4. Be sure the o-rings re in place. Slide the piston rod
down through the throat bearing and lower the pis-
ton (5) into the air motor base (56).
5. Pull the exhaust valve poppets (38) into the valve
actuators (13) and clip off the top part shown with
dotted lines. (F
IG. 5)
6. Install the transfer valve poppets (37) onto the valve
stems (30), bottom adjusting nuts (27), grommets
(18), and top adjusting nuts (27) on the piston (5).
Assemble the trip rod (1), valve actuator (13), trip
rod yoke (14, and toggle assemblies (K) on the pis-
ton. (F
IG. 5)
FIG. 5
K
Push toggles (K) in
and then up.
Turn wires up.
L
114
28*
27*
30*
18*
5
56
17
16
4
38*
13
27*
37*
Cut off tops of
poppets (x) as
indicated by dotted
lines
0.125 in.
(3.18 mm)
CUTAWAY VIEW
1
4
13
38*
30*
27*
18*
27*
20*
5
37*
M