Air motor u-cup installation, Air Motor Torque

7.See FIG. 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.

3*	Lips face up

43*

U-cup faces up. Flange faces down.

ti12755a

FIG. 12: Air motor u-cup installation

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 FIG. 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.

groove

29	ti14544a

FIG. 13: Align shield in grooves on covers

Repair

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).

The manifold is reversible for ease of placement of muffler or remote exhaust.

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.

Air Motor	Torque

M02xxx–M04xxx	11-13 ft-lb (15-18 N•m)

M07xxx–M34xxx	25-30 ft-lb (34-40 N•m)

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).

312796R