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Cooper Tools Quackenbush 120SC-112 Operation & Service Manual

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120SC-112 SELF-COLLETING DRILLS
Houston Operation
7007 Pinemont
Houston, TX 77040
Operation & Service Manual
823060
Recoules Operation
Zone industrielle - B.P. 28
Avenue Maurice Chevalier
77831 Ozoir-la-Ferriere Cedex France
12/01
1

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  • Page 1 Operation & Service Manual 823060 12/01 120SC-112 SELF-COLLETING DRILLS Houston Operation Recoules Operation 7007 Pinemont Zone industrielle - B.P. 28 Houston, TX 77040 Avenue Maurice Chevalier 77831 Ozoir-la-Ferriere Cedex France...

  • Page 2: Safety Recommendations

    Safety Recommendations For your safety and the safety of others, read and understand CAUTION the safety recommendations and operating instructions be- fore operating any drill motor. • Before the tool is connected to the air supply, the throttle should Always wear protective equipment: be checked for proper operation (i.e., throttle valve moves freely and returns to closed position).

  • Page 3: Safety Labels

    Safety Recommendations Any tool operator should be aware of the following warning signs WARNING and symptoms so that a problem can be addressed before it Keep hands away from becomes a debilitating injury. Any user suffering from prolonged clamping and feed symptoms of tingling, numbness, blanching of fingers, clumsi- mechanisms.
  • Page 4 Index Tool Adjustments Safety Recommendations 2&3 Major Tool Components Index & Major Tool Components Trouble Shooting Introduction Drill Assembly & Parts List 27-31 Air and Hydraulic System Diagrams Maintenance Kit Backhead Disassembly & Motor Disassembly 10&11 Gear Set Assemblies 33&34 Spindle Adjustment Disassembly 11&12 Quill &...

  • Page 5: Introduction And General Information

    Introduction and General Information The 120SC-112 drill is an air operated, hydraulically con- Weight: Tool weight with the steel pressure foot is 12 trolled tool that automatically clamps to the material, drills and pounds. countersinks close tolerance holes in one operation. Spindle Speeds: Ten geared spindle speeds are available: The 120SC-112 will produce high quality holes in aluminum, 270, 470, 700, 900, 1150, 2200,3500, 5500, 7000,14,000 &...
  • Page 10 I. Backhead Disassembly 1. Remove four 1/4-20 cap screws. 2. Pull backhead with spindle attached straight out of tool. NOTE: Three O-rings in recessed cavities should remain in place in backhead mating surface. II. Muffler & Air Motor Disassembly 1. Remove rear two 5/32" hex head cap screws and 2.
  • Page 11 3. Remove retainer ring that holds in motor. 4. Tap housing gently on surface to remove air motor. The complete motor includes rotor with blades, cylinder, and front and rear bearing plates. The exhaust slots on the should be indexed 180 degrees away from the exhaust on the housing when being placed back into the tool.
  • Page 12 3. Unscrew spindle adjustment nut and remove nut with spindle. 4. Tap spindle adjustment nut to remove spindle and duplex ball bearings. 5. Unscrew bearing lock nut and bearing lock nut washer with special bearing lock nut assembly tool 623075. 6.
  • Page 13 IV. Quill & Pressure Foot Removal 1. Remove pressure foot nut with appropriate span- 2. Pull pressure foot forward to remove quill and ner wrench or with special pressure foot nut tool pressure foot from tool housing and feed sleeve. 623014.
  • Page 14 5. To reassemble, install spiral lock retaining ring in groove provided above threads on large diameter of quill. NOTE: The spiral lock retaining ring must be wound to follow the threads in quill so that the spiral lock ring will not unwind when quill is threaded into pressure foot.
  • Page 15 3. With rod push in on the pull rod to remove pressure on lift finger and the lift finger will come out. 5. Remove bleed port screw from side of tool. 4. The following steps apply only if the hydraulic Remove 1/8"...
  • Page 16 8. Expand and remove first retaining ring from feed 9. Remove rear feed piston using internal pliers. sleeve. Hold piston on internal diameter pull piston out. 11. Compress front bulkhead retaining ring. 10. Expand and remove second retaining ring from feed sleeve.
  • Page 17 14. Screw threaded end of bulk- 13. Compress and remove large head removal tool 622849 into retaining ring located at the rear of 12. Pull front bulkhead and threaded hole in air/hydraulic bulk- tool from large diameter bore of feed sleeve out. head and pull to remove from rear cavity.
  • Page 18 VIII. Disassembly of Feed Rate Adjustment Valve 2. Unscrew pipe plug with hex wrench and remove. 1. Unscrew feed adjustment body with wrench and remove. 4. Use installation tool 624763 for installation. 3. Push out feed rate adjustment valve and screen with wrench.
  • Page 19 IX. Disassembly of Unclamp Check Valve 1. Remove retaining ring and valve retaining plug. 2. Lift spool and spring out of cavity and place in Remove spool and spring. clean area. 3. Using removal and installation tool 632424, re- move valve sleeve. Carefully inspect O-rings for damage and replace if necessary.
  • Page 20 X. Retract and Dwell Valve Disassembly 1. Remove retaining ring on valve retaining plug. 2. Lift out latching spool. 3. Remove retract and dwell valve spool and spring. 4. Using removal and installation tool 632424. Re- move sleeve. 5. When reassembling, apply O-ring lubricant liber- ally to prevent damage to O-rings as they are pushed past ports on the inside cavity.
  • Page 21 XI. Hydraulic Fluid Reservoir Disassembly 2. Remove set screw. 1. Unscrew the reservoir plug. 4. Disassembly and reassembly of the oil indicator 3. Remove oil indicator guide from rear of tool. guide must be inserted from the rear of the tool. The Remove piston and rod assembly from the front of indicator piston and rod assembly must be inserted the housing with needle nose pliers.
  • Page 22 XII. Trigger Disassembly 1. Use special Trigger Lock Assembly Tool 623015 2. Loosen and remove set screw in trigger and to remove trigger lock by unscrewing from handle. remove trigger. NOTE: Use Loctite on threads when reassembling trigger lock. 4. Lift out trigger spool and sleeve. 3.
  • Page 23 XIII. Pilot Valve Disassembly 1. Remove inlet bushing. 2. Remove spacer. 3. Insert long 8-32 screw into tapped hole provided in base of pilot spool and lift out. NOTE: Be careful not to bend pilot spool when remving or inserting. A bent spool will cause the tool to malfunction and will require spool replacement.
  • Page 24 WARNING: Disconnect air-supply before servicing. Filling & Bleeding the Clamp mechanism moves when connecting or removing air supply. Hydraulic System Keep hands and fingers away from clamping and feed mechanism. The 120SC-112 drill hydraulic system will periodically require filling and/or bleeding. If the oil level indicator is near the "Add Fluid"...

  • Page 25: Special Tools

    Motor Major Tool Components Exhaust Spindle Backhead Depth Control Dwell Depth Control Adjustment Clamp Adjustment Clamp Spindle Adjustment Feed Sleeve Trigger Lock Trigger Air Inlet Bushing Booster Pump (3/8-18 FNPT) Variable Spacing Pressure Foot Adjustable Tail Template Boss (See Accessories) Special Tools Bulkhead Removal Pressure Foot...

  • Page 26: Troubleshooting

    TROUBLE SHOOTING SYMPTOM REASON SOLUTION Air motor and/or clamp and feed func- Trigger or pilot valves clogged with for- Remove trigger and pilot valves (sepa- tions do not start when trigger is de- eign matter. rately) and inspect for rust or debris. In- pressed.
  • Page 27 Muffler Subassembly - 641055 ITEM PART NO. PART NAME QTY. 632130 BOX, MUFFLER 632126 ELEMENT, MUFFLER 632132 PLENUM 619995 SCREW, SHC (10-24UNC-3A) 632125 SCREW, HSBHC (10-32UNF X 1.250) ** PARTS NOT INCLUDED IN SUBASSEMBLY: 632125 - SCREWS 15SC Upgrade to 120SC Subassembly - 641099 Part No.
  • Page 28 619164 SPINDLE GEAR SHOWN ONLY 622778 622134 SEE SPECIFIC GEAR ASSEMBLIES ASSEMBLE 2-PLACES 632125 622777 843791 BACK-TO-BACK FOR ASSEMBLY INSTRUCTIONS SPINDLE SET AS SHOWN 622771 622696 622700 .375 SHANK X .250-28 THD. 621508 622773 622776 622780 641055 .500 SHANK X .250-28 THD. 621509 622703 622770 623848...
  • Page 29 845614 (2 REQ'D) 623641 622056 (3 REQ'D) 812962 624121 812962 622255 622358 622870 622617 622616 622618 622615 PRESSURE FOOT 622680 RH STEEL 622681 LH STEEL 622682 RH ALUM. 622683 LH ALUM. NOT SUPPLIED WITH THIS ASS'Y 622617 622616 622376 622353 847710 615645 622618...
  • Page 30 622053 (3 REQ'D) 622768 847710 847665 (3 REQ'D) LUGS TO STRADLE BUTTON 843434 HEAD CAP SCREW AS SHOWN 622775 (3 REQ'D) 622250 612625 844303 622384 623596 623880 623881 844407 (4 REQ'D) 847710 843913 812164 622758 641055 Muffler Assy. 847095 864335 615641 622764 615645...

  • Page 31: Parts List

    PARTS LIST Part No. Name of Part Qty. Part No. Name of Part Qty. 612625 WASHER; PLAIN 622773 SCREW; SHC 615641 SCREW; BHC 622774 SCREW; SHC 615645 RING; O 622775 SCREW; BHC 619017 RING; RETAINING 622776 RING; O 619164 RING; O 622777 RING;...

  • Page 32: Name Of Part

    MAINTENANCE KIT - 621953 PART NO. NAME OF PART QTY. 382370 TOOL BOX 622849 ASSEMBLY TOOL 623014 ASSEMBLY TOOL, PRESS. FOOT NUT 623015 ASSEMBLY TOOL, TRIGGER LOCK 623334 ASSEMBLY TOOL, PRESSURE HYDRAULIC & FRONT ENCLOSURE 623515 ASSEMBLY TOOL, PRESSURE FOOT NUT 623520 ASSEMBLY TOOL, BULKHEAD REMOVAL 623647...
  • Page 33 GEAR SET ASSEMBLIES 621503 - 470RPM 621835 - 270RPM Part No. Name of Part Qty. Part No. Name of Part Qty. 623848 623848 REF. Assembly, Backhead REF. Assembly, Backhead 621515 621515 Assembly, Spacer Assembly, Spacer 622803 Plate, Gear Set 623772 Plate, Gear Set 622800 623770...
  • Page 34 GEAR SET ASSEMBLIES 621505 - 3,500RPM 621686 - 5,500RPM Part No. Name of Part Qty. Part No. Name of Part Qty. 623848 623848 REF. Assembly, Backhead REF. Assembly, Backhead 621515 Assembly, Spacer 621515 Assembly, Spacer 622786 622796 Plate, Gear Set Plate, Gear Set 622783 Gear, Spindle...

  • Page 36: Regulator Assembly

    Regulator Assembly The Regulator Assembly (Part No. 621521) re- places the plug and adds the capability of regulat- ing clamp pressure and drill thrust. This acces- sory is particularly useful when drilling composite material. A pressure gage (not supplied) may be installed on side cover to set and monitor clamp air pressure.
  • Page 37 Note: Upper number is item. Lower number is quantity required.
  • Page 38 Note: Upper number is item. Lower number is quantity required.
  • Page 39 ITEM PART NO. PART NAME QTY. 863325 10-24 X 5/8 SFHCS 632178 CHECK VALVE 624905 FITTING TO TEMPLATE FOOT 624911 FITTING 624973 FITTING, MALE ELBOW 624906 FITTING, MALE PUSH-IN 624910 NYLON TUBING TO NDSJC FOOT 629091 PLATE, MOUNTING 631799 RESERVOIR, LARGE MANUAL FILL 631800 RESERVOIR, SMALL MANUAL FILL 631801...
  • Page 40 CooperTools 670 Industrial Drive Lexington, SC 29072 Phone: (803) 359-1200 Fax: (803) 359-2013 www.cooperindustries.com...

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