PARTS LIST / 6661AX-X-C AIR MOTOR SECTION
Indicates parts included in
SERVICE KIT NOTE: Service Kit
Item | Description (size) | Qty | Part No. | [Mtl] |
| Item | Description (size) | Qty | Part No. | [Mtl] |
101 | Motor Body | (1) | 94743 | [A] |
| 116 | Spacer | (1) | 92006 | [Z] |
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| (1) | 94741 | [CI] |
| 117 | Gasket | (1) | 92004 | [B/Ny] | |
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102 | “O” Ring (1/16” x 1” o.d.) | (2) | [B] |
| 118 | Pilot Rod | (1) | [C] | ||
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103 | Sleeve | (1) | 94527 | [D] |
| 119 | “O” Ring (1/8” x 3/4” o.d.) | (4) | 93075 | [U] |
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104 | Retaining Ring, TruArc (.925” i.d.) | (2) | [C] |
| 120 | Spacer | (3) | 115959 | [Z] | |
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105 | Screw | (8) | [SS] |
| 121 | Sleeve Bushing | (2) | [Bz] | ||
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106 | Lockwasher (1/4”) | (8) | [SS] |
| 122 | “O” Ring (3/32” x 9/16” o.d.) | (2) | 94820 | [U] | |
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107 | Plate | (2) | [SS] |
| 123 | Screw (#8 - 32 x 3/8”) | (4) | [C] | ||
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108 | Gasket (with notch) | (1) | 92878 | [B/Ny] |
| 124 | Screw (5/16” - 18 x | (12) | 93277 | [SS] |
109 | Piston | (1) | 92011 | [D] |
| 128 | Pipe Plug (1/8 - 27 N.P.T. x 1/4”) | (1) | [C] | |
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110 | “U” Cup (3/16” x | (1) | [B] |
| 128 | Pipe Plug | (1) | [C] | ||
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111 | Spool | (1) | 92005 | [A] |
| 195 | Button Head Screw (1/4” - 20 x 1/4”) | (3) | 94987 | [SS] |
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| (1) | 93047 | [C] |
| 201 | Muffler | (1) | 93110 | [C] | |
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112 | Washer (1.557” o.d.) | (5) | 92877 | [Z] |
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113 | “O” Ring (1/8” x | (5) | [B] |
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| Pak of 10 | (10) | 637175 |
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114 | “O” Ring (3/32” x | (6) | [B] |
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115 | Spacer | (4) | 92876 | [Z] |
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| used on units manufactured between 8/90 and 4/92 to | |||
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| retain the pilot bushing. |
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AIR MOTOR SECTION SERVICE
Service is divided into two parts − 1. Pilot Valve, 2. Major Valve. GENERAL REASSEMBLY NOTES:
Air Motor Section Service is continued from Fluid Section repair.
Inspect and replace old parts with new parts as neces- sary. Look for deep scratches on metallic surfaces, and nicks or cuts in “O” rings.
Take precautions to prevent cutting “O” rings upon instal- lation.
Lubricate “O” rings with
Do not overtighten fasteners, refer to torque specification block on view.
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 rein- stall (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 re- tain on each end with the two (122) “O” rings, retain with
(123)screws.
4.Replace (104) retaining rings.
MATERIAL CODE
[A] = | Aluminum | [CI] = | Cast Iron | [SS] = Stainless Steel | |
[B] = | Nitrile | [D] = | Acetal | [U] = | Polyurethane |
[Bz] = Bronze | [N] = Neoprene | [Z] = | Zinc | ||
[C] = Carbon Steel | [NY] = Nylon |
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MAJOR VALVE DISASSEMBLY
1.Remove (107) plate (or leg depending on model), (108 and 117) gaskets.
2.On the side opposite the air inlet, push on the inner di- ameter (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.
NOTE: Be careful to orient spacer legs away from blocking internal ports.
2.Lubricate and carefully insert (111) spool.
3.Install (117) gasket and (107).
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).
“Smart Parts” Keep these items on hand in addition to the Service Kits for fast repair and reduction of down time.
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