Sioux Tools 4038, Instructions Manual

1

Printed In U.S.A.

Form ZCE444
Date 2003June18/A
Page 1 of 16

INSTRUCTIONS FOR

SIOUX AIR IMPACT WRENCH NOS. 4038, 4039, & 4040

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 1/2" (12.7 mm) I.D. Extension hoses should be at least 1/2" (12.7mm) I.D. Use couplings and
fittings with at least 3/8" (10mm) I.D. When using quick couplers, install a 6 ft (2m) leader hose between tool and quick couplers.

LUBRICATION

Use SIOUX No. 288 air motor oil. An airline lubricator, set to deliver 4 to 5 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.

Grease hammer mechanism every 40 hours, with up to 1 oz. (28.4 g) of Cat. No. 289A grease, thru grease fitting on rear of tool.
When regreasing hammer mechanism after servicing, use 1 oz. (28.4 g) of Cat. No. 289A grease. Make certain all moving parts
are lubricated.

GENERAL OPERATION

Reversing Spindle Rotation

The direction of spindle rotation is controlled with the reversing lever located at the rear of the tool.

 For counterclockwise rotation. 

 For clockwise rotation.

Ensure that the socket is held square to the fastener and that the tool is in-line with the socket.

Output Control

Turn the output control knob on the bottom of the handle full counterclockwise for maximum output. Turn knob clockwise to reduce
output. The knob can be locked in position by tightening the small hex screw in the knob.

Sockets

Use only impact sockets in good shape.

Use deep socket rather than extension bars.

GREASE IMPACT MECHANISM
WITH GUN HERE
(Use Sioux Cat. No. 289A Grease)

REVERSING
LEVER

CAT. NO. 1391

OUTPUT
CONTROL

AIR HOSE

FEMALE QUICK
COUPLER

COUPLER NIPPLE

LEADER HOSE

FILTER

REGULATOR

LUBRICATOR