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Page 7of 866605X-X(en)
PARTS LIST / 66605X -X AIR MOTOR SECTION
PILOT VALVE
MAJOR VALVE
(see note3, page 6)
Figure 3
. TORQUE REQUIREMENTS ,
NOTE: DO NOT OVERTIGHTEN FASTENERS.
(134)Torqueto15-20in.lbs(1.7-2.3Nm),wait10minutes,thenre-torque
to 15 -20 in.lbs (1.7 -2.3 Nm).
LUBRICATION / SEALANTS
Apply Key-Lube(93706-1) toall “O” rings, “U” cupsand 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,page6)
(OPTION) 129
(see note2, page 6)
AIR MOTOR SECTION SERVICE
Service is divided into two parts - 1. Pilot Valve, 2. Major Valve.
S Air Motor Section Service is continued from Fluid Section repair.
PILOT VALVE DISASSEMBLY
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)
spacers from (101) center body.
PILOT VALVE REASSEMBLY
1. Assemble(119)“O”rings,(120)spacersand(142)washerson(118)
pilot rod.
2. Insertthestackintothe(101)body.Sleeve(103)maybeusedtoas-
sist pressing 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 VALVE DISASSEMBLY
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)
valve block.
4. Remove (141) valve plate and (140) valve insert.
5. Remove (136) plug and (111) spool.
MAJOR VALVE REASSEMBLY
1. Install new (139) and (138) “U” cups on (111) spool -- LIPS MUST
FACE EACH OTHER.
2. Insert (111) spool into (135) valve block.
3. Install(137)“O”ringon(136)plug,insertpluginto(135)valveblock.
4. Install(140)valveinsertand(141)valveplateinto(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.