U.S. General 91715 Assembly And Operating Instructions Manual Download Page 5

Page 5

SKU 91715

For technical questions, please call 1-800-444-3353

Operation (continued)

Note:

Turn off your air compressor and disconnect the air hose when you are changing
sockets.  After you attach the socket, attach the air hose and turn the air compressor
on.

4.

Select the appropriate size 1/2” drive socket for your needs.

5.

Push and snap the socket (not included) onto the Anvil (105).

6.

To operate the Forward/Reverse Lever (205) follow the directions in 

FIGURE 2

 on page

6.

Note:

Set the Forward/Reverse Lever (205) so that the anvil turns clockwise (forward).

7.

Tighten the nut as tight as you can by hand.

8.

Place the socket (not included) over the nut you wish to tighten.

9.

Grip the Impact Wrench firmly with two hands and gently squeeze the Trigger (409).

Note:

If the Impact Wrench cannot tighten the nut to your satisfaction, do not raise the air
pressure on the compressor over 90 PSI.  Pressures above 90 PSI will strip the  work-
piece and damage the tool, potentially causing the tool to fail, causing serious injury.
Use other appropriate methods and tools to tighten the nut.

10.

When the nut is tightened, release the Trigger (409).  Turn off the air compressor and
disconnect the hose.

11.

If available, check the recommended torque specification for the nut.  Use a torque
wrench to tighten the nut to the proper setting after using the Impact Wrench.

Loosening

Note:

Set the Forward/Reverse Lever (205) so that the anvil turns counterclockwise (reverse).

12.

Place the socket (not included) over the nut you wish to loosen.

13.

Grip the Impact Wrench firmly with two hands and gently squeeze the Trigger (409).

Note:

If the Impact Wrench cannot loosen the nut, do not raise the air pressure on the
compressor over 90 PSI.  Do not attempt to loosen the nut with the Impact Wrench.
Use other appropriate methods and tools to loosen the nut.

14.

When the nut is loosened, release the Trigger (409).  Turn off the air compressor and
disconnect the hose.

15.

If needed, remove the nut from the socket.

Refer to 

FIGURES 1

 through 

3

 on page 6, and the Assembly Drawing on page 8.

Warning!!

  This Impact Wrench supplies powerful torque and is designed to be operated with

two hands.  Failure to operate the Impact Wrench with two hands may result in serious injury.

Summary of Contents for 91715

Page 1: ...ight 2004 by Harbor Freight Tools All rights reserved No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Fre...

Page 2: ...e machines tools extension cords or air hoses 4 Store idle equipment When not in use tools must be stored in a dry location to inhibit rust Always lock up tools and keep out of reach of children 5 Use...

Page 3: ...oper operation Any part that is damaged should be properly repaired or replaced by a qualified technician Do not use the tool if any switch does not turn On and Off properly 15 Guard against electric...

Page 4: ...ay also affect tool perfor mance 1 You will need to prepare a 1 4 air connector not included to connect to the Air Inlet 408 on the Impact Wrench First wrap the 1 4 air connector with pipe thread seal...

Page 5: ...ry Use other appropriate methods and tools to tighten the nut 10 When the nut is tightened release the Trigger 409 Turn off the air compressor and disconnect the hose 11 If available check the recomme...

Page 6: ...hose before attempting any maintenance 2 Wipe the Impact Wrench down with a lint free cloth after each use 3 Make sure the Anvil 105 is clear of dirt or debris If possible spray it with compressed air...

Page 7: ...THERETO Parts List t r a P n o i t p i r c s e D y t Q t r a P n o i t p i r c s e D y t Q 1 0 1 e m a r F r e m m a H 1 2 0 3 e t a l P g n i r a e B t n o r F 1 2 0 1 n i P e m a r F r e m m a H 2 3...

Page 8: ...Page 8 SKU 91715 For technical questions please call 1 800 444 3353 Assembly Drawing REV 03 05...

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