Repair
18
334644C
Reassemble the Air Motor
NOTE:
The bearing (7) is pressed in the bottom cover
(1) and is only available with Bottom End Cap Repair kit
24X559.
1.
Lubricate and install the o-ring (14*) on the bottom
cover (1).
2.
Lubricate and install new u-cup seal with • ange (9*),
with the lips facing up, in the bottom cover (1) from
the bottom. The seal will snap into place.
3.
Lubricate and install the new u-cup seal (8) over the
top of the bearing with the lips facing up. Install
retaining clip (11). Snap in the new bumper (19).
4.
Lubricate the inside of the cylinder (3). Lower the
cylinder (3) onto the bottom cover (1).
5.
Lubricate and install the o-ring (10*) around the pis-
ton (4). It will • t loose.
6.
Slide the piston assembly (4) down into the cylinder
(3). Be sure the o-ring (10*) stays in place. Work it
carefully into the groove.
7.
Install the muffler (12) around the cylinder (3) and in
the groove on the bottom cover(1). Be sure the front
opening is lined up with the • at on the bottom cover
(1).
8.
Lubricate and install the o-ring (14*) on the top
cover (2).
9.
Carefully place the top cover (2) on the cylinder (3)
and muffler (12). The • at vertical manifold surfaces
of the top and bottom covers must align. Be sure the
muffler (12) is in the groove on both the top and bot-
tom covers.
10. Install the tie bolts (25) hand tight.
11. Tighten the tie bolts (25) halfway. Work in a criss-
cross pattern. Then torque to 60 ft-lb (81 N•m).
12. Install two gaskets (22) on the top and bottom caps
with grease. Install the manifold (5). Torque bolts to
95-105 in-lb (10.7-11.9 N•m).
13. Reconnect the pilot valve air lines (55) to the air
valve (13).
F
IG
. 7 U-cups
