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MODEL T10813

HEAVY-DUTY 1" EXTENDED

ANVIL AIR IMPACT WRENCH

INSTRUCTIONS

COPYRIGHT © DECEMBER, 2013 BY GRIZZLY INDUSTRIAL, INC.

NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE

 OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.

 #TSBL16203  PRINTED IN CHINA

Introduction & Identification

The Model T10813 is a heavy-duty impact wrench 
that  features  an  extended  1"  drive  anvil  with  a 
maximum torque of 1880 ft/lbs.

Use 

Figure 1 and the descriptions below to better 

understand  the  controls  and  components  of  this 
tool.

Figure 1. Model T10813 identification.

A

B

D

C

E

F

G

A.  Extended Anvil. Accepts  1"  drive  impact 

sockets or accessories.

Standard sockets or accessories not 

designed to withstand the operational 

forces of this impact wrench could break 

apart during use and cause serious impact 

injuries to the operator or bystanders. ONLY 

use impact sockets or accessories rated for 

use with this impact wrench.

B. Trigger. 

Activates rotary action of wrench.

C.  Oil Port. Allows addition of lubricant to the oil 

reservoir (see 

Lubrication on Page 4).

D.  Air Inlet. Accepts 

1

2

" NPT connection to the 

proper air supply equipment.

E.  Regulator Knob. Adjusts  speed  and  direc-

tion of rotary action.

F.  Auxiliary Handle. Enables  operator  to 

securely hold impact wrench with both hands 
during operation.

G.  Grease Port. Allows  addition  of  lubricant  to 

the grease reservoir.

Specifications

Square Drive..................................................... 1"
Bolt Capacity ................................................ 1 

5

8

"

Required Air Pressure Range ...........90–115 PSI
Maximum Torque ................................ 1880 ft/lbs
Free Speed ......................................... 3500 RPM
Minimum Air Hose ID ......................................

1

2

"

Weight .......................................................26 lbs.

EYE/EAR INJURY HAZARD!

Wear safety glasses and 

hearing protection when 

using this tool.

DO NOT EXCEED 115 PSI!

Personal injury could 

occur.

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