REASSEMBLY OF AIR MOTOR
NOTE: ALL THREADS ARE RIGHT HAND.
Apply grease to all •O" rings, •U" cups and other rubber goods when installing.
1.Slip the (24) •O" ring on the (22) adapter, clean with solvent and ap ply Loctite 271 to the external threads of the (22) adapter. Assemble the (22) adapter and (25) nut to the (23) piston assembly and tighten to 160 180 ft lbs.
2.Put the threaded end of the (26) valve rod thru the hole in the (22) adapter, with the •machined shoulder" end of the (26) valve rod on the threaded side of the (22) adapter.
3.While holding the (26) valve rod below the threads with locking pli ers, clean with solvent and apply Loctite 271 to the threads and at tach the (40) extension rod, using the provided wrench flats.
4.Place the •machined shoulder" end of the (26) valve rod into the hole in the end of the (52) piston rod and assemble (52) piston rod to (22) adapter, tightening using a wrench on flats provided.
5.Thoroughly grease and install the (20) •O" ring in the (30) air motor base assembly.
6.Grease and place the (51) washer and (49) •U" cup into the (30) air motor base assembly. Place the (48) guide washer and (47) retain ing ring in the (30) air motor base assembly.
7.Grease and install (15) •O" ring on the (43) lower gland.
8.Grease the bore in the (18) head assembly and insert the (43) lower gland into the bore of the (18) head assembly, using a twisting mo tion.
9.Align the screw holes in the (43) lower gland and (18) head assembly.
10.Secure the (43) lower gland to the (18) head assembly using four (21) machine screws.
11.Put the (52) piston rod thru the (49) •U" cup in the (30) air motor base assembly, being careful not to damage the •U" cup.
12.Thoroughly grease the inside of the (27) air cylinder.
27 CYLINDER (APPLY |
GREASE THROUGHOUT |
INSIDE) |
23 PISTON |
(APPLY GREASE |
AROUND EDGE) |
52 PISTON ROD |
FIGURE 5 |
13.Fill the area between the lips of (23) piston assembly with grease, then insert into the bottom of the (27) air cylinder (see figure 3).
14.Push the (23) piston assembly to the top of the (27) air cylinder.
15.Thoroughly grease and install the (45 and 20) •O" rings into the (18) head assembly.
16.Thoroughly grease the two (17) •O" rings and install one in the (30) air motor base assembly. Install the other in the (18) head assembly.
17.Press the (28) tube into the counterbored hole in the (30) air motor base assembly.
18.Push the (40) extension rod thru the (45) •O" ring in the base of the
(18)head assembly.
19.Press the (18) head assembly down until the (27) air cylinder and
(28)tube are seated in the (18) head assembly.
20.Insert the four (46) bolts down thru the holes in the flanges of the (18) head assembly and the (30) air motor base assembly.
21.Screw the four (50) nuts on the four (46) bolts. Alternately and evenly tighten the nuts.
22.Thoroughly grease and install the (19) •U" cup in the (42) piston adapter, with the lips of the (19) •U" cup down toward the thick flange on the (42) piston adapter.
23.Thoroughly grease and install the (39 and 15) •O" rings in the (37) upper gland.
24.Bend the (38) seal in a heart shape and install in the (37) upper gland inside the (39) •O" ring (see figure 6).
SEAL FREE FORM | SEAL COLLAPSED FORM |
PUSH SIDES IN, AS SHOWN, THEN SLIDE INTO BORE AND POSI TION SEAL IN GROOVE.
FIGURE 6
25.Grease and carefully push the (31) valve piston into the (37) upper gland to size the (38) seal, then remove (see figure 7 below).
15 ``O" RING
39 ``O" RING
38 SEAL
DIRECTION FOR SIZING 
31 VALVE PISTON
37 UPPER GLAND
FIGURE 7
26.Place the (44) washer over the (40) extension rod.
27.Pull the (40) extension rod up and grasp with two fingers (see figure 8).
28.Place the 90350 installation tool over the (40) extension rod, with the turned diameter down and the chamfer up.
29.Fit the turned diameter of the 90350 installation tool into the bore in the bottom of the (18) head assembly.
30.Place the (42) piston adapter down over the (40) extension rod, with the threads up.
31.Insert the (36) washer into the groove in the top of the (40) extension rod.
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