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312796R 15
7. See F
IG
. 12. Lubricate and install new u-cup seal
with flange (43*) in the bottom of the bearing in the
bottom cover (1). The u-cup must face up and the
flange must face down. Lubricate and install new
u-cup seal (3*) in the top of the bearing. Lips must
face up.
8. Lubricate and install the o-ring (9*) on the bottom
cover (1).
9. M07xxx, M12xxx, and M18xxx only: Install the pis-
ton bumper (28) on the bottom cover (1).
10. See F
IG
. 13. Carefully place the bottom cover (1) on
the cylinder (11), sliding the rod through the bearing.
The manifold surfaces of the top and bottom covers
must align. Be sure the shield (12) is in the groove
on both the top and bottom covers.
11. Install the tie bolts (10) hand tight.
12. Install two gaskets (14*) on the manifold (15). Install
the manifold (15). Torque bolts to 95-105 in-lb
(10.7-11.9 N•m).
13. Align the air valve gasket (16*◆) on the manifold,
then attach the air valve.
14. Tighten the tie bolts (10) halfway. Work in a criss-
cross pattern. Check that the shield remains in the
grooves on both covers. Continue tightening the
bolts in pattern to the torque specified in the follow-
ing table.
15. Lubricate and install pilot valves (19) in top and bot-
tom cover. Torque to 95-105 in-lb (11-12 N•m).
16. Reinstall muffler(s).
F
IG
. 12: Air motor u-cup installation
F
IG
. 13: Align shield in grooves on covers
3*
43*
ti12755a
U-cup faces up.
Flange faces down.
Lips face up
groove
groove
28
29
1
12
13
ti14544a
The manifold is reversible for ease of placement of
muffler or remote exhaust.
Air Motor Torque
M02xxx–M04xxx
11-13 ft-lb (15-18 N•m)
M07xxx–M34xxx
25-30 ft-lb (34-40 N•m)