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Repair
3A4096F
17
15. Pump Piston Subassembly (33)
Secure a wrench on the flats of piston rod (34). Use
a second wrench to remove lock nut (31) and star
washer (32) from top of piston (F
. 18). Remove
lock nut and star washer. Keep these parts for reas
-
sembly.
16. Examine the piston assembly (33) for scratches and
other wear and damage. If damaged, replace the
pump piston assembly (33).
17. Reposition air motor cylinder in vise to access the
bottom of air motor cylinder (F
. 19).
18. Secure a wrench on the cover nut (1a). Turn it
counter-clockwise loosen and remove the cover (1)
from bottom or air motor cylinder. (F
. 19).
NOTE:
There is a spring (6) (F
. 20) inside the air
motor cylinder (3) under the piston (5). Hold your
hand on the cover (1) for resistance and to hold it
down while loosening the cover screws (1a) (F
20).
F
IG
. 18
33
32
31
31
32
34
33
F
IG
. 19
F
IG
. 20
1A
1
5
6
3
34