Page 7 of 866605X-X(en)
PARTSLIST / 66605X -XAIR MOTOR SECTION

PILOT VALVE

MAJOR VALVE

(seenote 3, page 6)
Figure3
.TORQUE REQUIREMENTS ,
NOTE:DO NOT OVERTIGHTEN FASTENERS.
(134)Torqueto 15 - 20 in. lbs (1.7 - 2.3 Nm), wait10 minutes, then re-torque
to15 - 20 in. lbs (1.7 - 2.3 Nm).
LUBRICATION/ SEALANTS
ApplyKey-Lube (93706-1) to all “O” rings, “U” cups and mating parts.
136
129130
102103101131
132141140
111
135
137
139
138
118
142
142 122
104143
119
119
119
119
120
120
120
133
.134
201(OPTION)
(seenote2, page 6)
(OPTION)129
(seenote 2, page 6)
AIR MOTOR SECTION SERVICE
Serviceis divided into two parts - 1. Pilot Valve, 2. Major Valve.
SAirMotor Section Service is continued from Fluid Section repair.
PILOT VALVEDISASSEMBLY
1. Remove (122) and (104) snap rings.
2. Remove (143) plates.
3. Remove (103) sleeve and (102) “O” rings.
4. Remove (118) piston, (142) washers, (119) “O” rings and (120)
spacersfrom (101) center body.
PILOT VALVEREASSEMBLY
1. Assemble (119) “O” rings, (120) spacers and (142) washers on (118)
pilotrod.
2. Insert the stack into the (101) body. Sleeve (103) may be used to as-
sistpressing stack into body.
3. Install (103) sleeve and (102) “O” rings into (101) body.
4. Install (143) plates and (122) and (104) snap rings.
MAJOR VALVEDISASSEMBLY
1. Remove (129) exhaust cover and (130) gasket.
2. Pull (135) valve block assembly from (101) body.
3. Remove (134) bolts, (133) washers and (132) gasket from (135)
valveblock.
4. Remove (141) valve plate and (140) valve insert.
5. Remove (136) plug and (111) spool.
MAJOR VALVEREASSEMBLY
1. Install new (139) and (138) “U” cups on (111) spool -- LIPS MUST
FACEEACH OTHER.
2. Insert (111) spool into (135) valve block.
3. Install (137) “O” r ing on (136) plug, insert plug into (135) valve block.
4. Install (140) valve insert and (141) valve plate into (135) valveblock.
Note: After 9/92, parts (140, 141) are white (ceramic), the dished
side of the (140) valve insert should be against the shiny face of
(141)valve plate for best performance.
5. Replace (132) gasket and install valve block assembly on (101)
body.