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PARTS LIST / AIR MOTOR SECTION
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V Smart Parts" Keep these items on hand in addition to the Service Kits for fast repair and reduction of down time.
AIR MOTOR SECTION SERVICE
S Air Motor Section Service is continued from Fluid Section repair.
S Inspect and replace old parts with new parts as necessary. Look for
deep scratches on metallic surfaces, and nicks or cuts in O" rings.
S Take precautions to prevent cutting O" rings upon installation.
S Lubricate ``O" rings with KeyĆLube or equivalent.
S Do not overĆtighten fasteners, refer to torque requirement block on
view.
S ReĆtorque fasteners following restart.
PILOT VALVE DISASSEMBLY
1. Remove (104) retaining ring.
2. Remove (123) screws and (122) O" rings.
3. Remove (118) piston rod, (121) sleeve bushing, (119) O" rings and
(120) spacers from the (101) motor body.
4. Remove (103) sleeve and (102) O" rings.
PILOT VALVE REASSEMBLY
1. Replace two (102) O" rings if worn or damaged and reinstall (103)
sleeve.
2. Install one of the (121) sleeve bushings, (119) O" rings, (120)
spacers and the remaining (121) bushing.
3. Carefully push (118) pilot rod into bushings etc. and retain on each
end with the two (122) O" rings, retain with (123) screws.
4. Replace (104) retaining rings.
MATERIAL CODE
[A] = Aluminum [D] = Acetal [SS] = Stainless Steel
[B] = Nitrile [NY] = Nylon [U] = Polyurethane
[Bz] = Bronze [P] = Polypropylene [Z] = Zinc
[C] = Carbon Steel
MAJOR VALVE DISASSEMBLY
1. Remove (107) plate and (108 and 117) gaskets.
2. On the side opposite the air inlet, push on the inner diameter (111)
spool. This will force the (109) piston out. Continue pushing the (111)
spool and remove. Check for scratches and gouges.
3. Reach into the air section (exhaust side) and remove (116) spacer,
(115) spacers, (113) O" rings, (114) O" rings, (112) washers, etc.
Check for damaged O" rings.
MAJOR VALVE REASSEMBLY
1. Replace (112) washer, (114) O" ring and (113) O" ring onto (115)
spacer and insert etc.
2. Lubricate and carefully insert (111) spool.
3. Install (117) gasket and (107) plate.
4. Lubricate and install (110) packing cup and insert (109) piston into
(air inlet side) cavity, the (110) packing cup lips should point outward.
5. Install (108) gasket and replace (107) plate.