PAGE 7 OF 8
66605XĆX
PARTS LIST / 66605X-X AIR MOTOR SECTION
PILOT VALVE
MAJOR VALVE
(see note 3, page 6)
FIGURE 2
.
TORQUE REQUIREMENTS
,
NOTE: DO NOT OVERTIGHTEN FASTENERS.
(134) Torque to 15 Ć 20 in. lbs (1.7 Ć 2.3 Nm), wait 10 minutes, then
reĆtorque to 15 Ć 20 in. lbs (1.7 Ć 2.3 Nm).
136
129
130
102
103
101
131
132
141
140
111
135
137
139
138
118
142
142
122
104
143
119
119
119
119
120
120
120
133
.
134
201 (OPTION)
(see note 2, page 6)
(OPTION) 129
(see note 2, 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) spacers and (142) washers on
(118) pilot rod.
2. Insert the stack into the (101) body. Sleeve (103) may be used to
assist 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" ring on (136) plug, insert plug into (135) valve block.
4. Install (140) valve insert and (141) valve plate into (135) valve
block. 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.
