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INSTRUCTIONS & PARTS LIST FOR NO. 2S SERIES SCREWDRIVERS & DRILLS

SERIAL “C”

Read and understand "Safety Instructions For Air Tools" and these instructions before

operating this tool.

AIR SUPPLY
The efficiency of the tool is dependent on the proper supply of clean dry air at 90 psig (6.2 bar). The use of a line filter, pressure regulator,
and lubricator will insure maximum output and life of tools. Before connecting tool, blow out the air line to remove water and dirt which
may have accumulated.
HOSE AND HOSE CONNECTIONS
Supply hose should be not less than 3/8" (10mm) I.D. Extension hoses should be at least 1/2" (13mm) I.D. Use couplings and fittings
with at least 3/8" (10mm) I.D.
LUBRICATION
Use SIOUX No. 288 air motor oil. An airline lubricator, set to deliver 2 to 4 drops per minute, is recommended. If a lubricator is not used,
add .04 oz. (1.2cc, 12 to 15 drops) of oil into the air inlet twice daily.
Lubricate the gearing every 100 hours of operation with SIOUX No. 289A grease.
Lubricate positive and adjustable clutches every 40 hours with SIOUX No. 1232A grease.
GENERAL OPERATION
Depress the trigger to start the tool. Motor speed may be controlled by adjusting the slotted head screw on the top rear of the tool.
On reversing tools, the direction of spindle rotation is controlled by the reversing lever on the bottom front of the tool.

CLUTCH OPERATION INFORMATION
SCREWDRIVERS AND NUT RUNNERS
STALL DRIVE .......................................... Spindle turns with motor. Motor stalls when fastener is tight.

DIRECT CLUTCH ................................... Spindle doesn’t turn with motor. Pressure on spindle engages straight jaws to turn

spindle. Motor stalls when fastener is tight.

POSITIVE CLUTCH-ANGULAR JAW ..... Spindle doesn’t turn with motor. Pressure on spindle engages angular jaws to turn

spindle. Clutch ratchets when certain tightness is reached. Torque on the fastener is
determined by how hard the operator pushes on the tool.

POSITIVE CLUTCH ROLLER JAWS ..... Similar to angular jaw except 4 rollers engage angular teeth. Ratchets faster and blow not

as hard. For applications requiring lower torque.

ADJUSTABLE CLUTCH ......................... Spindle doesn’t turn with motor. Pressure on spindle engages the clutch, causing the

spindle to turn. When fastener reaches a preset torque, clutch will ratchet. Adjusting
spring pressure will change torque.

ADJUSTMENT OF ADJUSTABLE CLUTCH
ABOVE 25 INCH POUNDS
To adjust clutch place adjusting wrench (No. 53099) with pin
through opening in the clutch case. Place 1/4" (6.4 mm) HEX
wrench in the Bit Holder, press in and turn until adjusting wrench
falls into the slot of the Nut of the Clutch. Keep Bit Holder depressed
in with HEX Wrench and turn clockwise to increase and counter-
clockwise to decrease Torque.
BELOW 25 INCH POUNDS CHANGE TO GREEN
SPRING NO. 41284
Again place adjusting wrench in position as for the higher Torque,
but place a screw driver blade through the bit holder opening until
in contact with the slot at the far end. Rotate screw driver until
adjusting wrench falls into place, again rotate screw driver clock-
wise to increase and counterclockwise to decrease Torque.