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JAT-108 Impact Wrench

 

 

Setup and Assembly 

Any missing parts or damage should be reported 
immediately to your JET

®

 distributor. Do not use a 

damaged  tool.  Read  this  instruction  manual 
thoroughly for operation, maintenance and safety 
instructions. 

Box contents: 

Impact wrench 

Operation and parts manual  

Product registration card 

Operation 

 

The  impact  wrench  must  be 

properly  lubricated  before  operation.  See 
“Lubrication” section. 

 

Figure 1 

1. 

Remove protective cap from air inlet (Figure 
1). If an in-line oiler is not being used, add 4 
or 5 drops of air tool oil (not included) into the 
air inlet. 

2. 

Blow  out  air  line  to  remove  any  dirt  or 
moisture,  then  connect  air  supply  hose  to 
tool. Set air pressure to 90 psi. 

IMPORTANT:

  Connecting  a  quick-change 

coupling  directly  to  the  tool  is  not 
recommended,  as  vibration  may  cause  the 
connection to fail. Instead, add a leader hose 
and  install  any  quick-change  couplings 
farther down the line. 

3. 

Push  drive  socket  (not  included)  onto  anvil 
until it clicks into position. 

4. 

Rotate  regulator  dial  to  preferred  setting. 
Regulator settings are for reference only and 
do  not  indicate  specific  power  settings. 
Rotate right for forward direction (3 speeds). 
Rotate left for reverse (1 speed). 

 

Make  sure  nut  or  bolt  can 

withstand rated torque of impact wrench. 

 

To loosen nut or bolt: 

1. 

Select reverse rotation. 

2. 

Place socket over nut, hold  grip  firmly, and 
place other hand over top of housing. Gently 
squeeze trigger. 

Important:

  If  tool  cannot  loosen  nut,  DO 

NOT raise air pressure above 90 psi. If tool’s 
air  regulator  is  in  low  setting,  raise  setting 
and  retry. 

If  tool’s  regulator  is  already  at 

maximum,  do  not  continue  attempts  to 
loosen nut with this impact wrench.

 Use 

other methods or tools to loosen nut. 

3. 

Release trigger to stop impact wrench. 

To tighten nut or bolt: 

1. 

Install nut as far as possible by hand. 

2. 

Select forward rotation.  

3. 

Place socket over nut, hold  grip  firmly, and 
place other hand over top of housing. Gently 
squeeze trigger. 

Important:

 If tool stalls while tightening, DO 

NOT raise air pressure above 90 psi. If tools’ 
air  regulator  is  in  low  setting,  raise  setting 
and  retry. 

If  nut  will  not  tighten  on 

maximum  setting,  do  not  continue 
attempts  to  tighten  nut  with  this  impact 
wrench.

  Use  other  methods  or  tools  to 

tighten nut. 

4. 

Release trigger to stop impact wrench. 

NOTE: Do not overtighten. Fasteners with critical 
torque  settings  should  be  fully  tightened  with  a 
torque wrench. 

Summary of Contents for JAT-108

Page 1: ...Pneumatic 1 Impact Wrench 505108 JAT 108 Operation Parts Manual M 505108 Edition 1 05 2019 JET 427 New Sanford Road LaVergne TN 37086 Ph 800 274 6848 www jettools com Copyright 2019 JET...

Page 2: ...ring the tooling in the retainer and placing the tip against the work surface 11 Do not operate air tool without its guards in place Do not modify the tool 12 Do not operate this tool while tired or u...

Page 3: ...Sockets in poor condition may reduce impact power and could break creating a safety hazard 36 Use only sockets designated for use with impact wrenches Never use hand tool sockets as they can shatter...

Page 4: ...y not encompass all possible workplace environments The operator is expected to take appropriate precautions and exercise common sense As with any tool operation safety of operator and bystanders shou...

Page 5: ...3 9 m s2 Sound power 1 95 dB A Sound pressure 1 84 dB A Power setting 3 position forward 1 position reverse Grip Pistol style Overall Length 9 in 228 6 mm Housing material Aluminum with TPE molded gri...

Page 6: ...icate specific power settings Rotate right for forward direction 3 speeds Rotate left for reverse 1 speed Make sure nut or bolt can withstand rated torque of impact wrench To loosen nut or bolt 1 Sele...

Page 7: ...for the impact wrench 3 Set air pressure to 90 psi Excess air pressure and or unclean air will shorten the tool s life and may create a hazardous situation 4 Drain water from air compressor tank daily...

Page 8: ...that is to be used for air tools See Figure 2 Place oiler as close to air tool as possible for best lubrication Lubrication Use a light oil containing rust inhibitors such as SAE 10 Many JET air tool...

Page 9: ...xternal fasteners Loss of power erratic action Low air pressure Verify compressor has proper CFM rating for tool Check compressor regulator setting set air pressure to 90 psi Set regulator dial on too...

Page 10: ...Wrench Problem Possible cause Remedy Severe air leakage Note Minimal escape of air is often normal for air tools Air valve obstructed or damaged Clean or replace Housing loose or damaged Tighten or r...

Page 11: ...ur service department call 1 800 274 6848 Monday through Friday 8 00 a m to 5 00 p m CST Please have the stock number and serial number of your tool available when you call so that we may serve you qu...

Page 12: ...12 JAT 108 Impact Wrench 505108 JAT 108 1 inch Impact Wrench exploded view...

Page 13: ...2 JAT105 32 Washer 1 33 JAT105 33 Hammer cage 1 34 JAT105 34 Hammer 2 Part No Description Qty 35 JAT105 35 Hammer pin 7 6x63 5 mm 2 36 JAT108 36 Anvil 1 in 1 37 JAT108 37 O Ring 17 8x2 4 mm 1 38 JAT10...

Page 14: ...ed Service Centers located throughout the United States For the name of an Authorized Service Center in your area call 1 800 274 6846 or use the Service Center Locator on the JET website More Informat...

Page 15: ...JET 15 This page intentionally left blank...

Page 16: ...16 JAT 108 Impact Wrench 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jettools com...

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