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JET   

 

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: 

1 Ratchet 

wrench 

Operation and parts manual  

1 Warranty 

card 

 

Operation 

 

The ratchet 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) in to 
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 90psi. 

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. 

Select forward (F) or reverse (R) rotation on 
the direction switch. 

 

Make sure nut or bolt can 

withstand rated torque of ratchet wrench. 

 

To loosen nut or bolt: 

1. 

Select reverse rotation. 

2. 

Place socket over nut, and grip tool firmly 
with both hands.  

3.  Gently squeeze throttle lever. Pressure 

against throttle lever determines speed of 
ratchet wrench. 

Important:

 If tool cannot loosen nut, DO 

NOT raise air pressure above 90 psi. Use 
other methods or tools to loosen nut. 

4. 

Release throttle lever to stop ratchet wrench. 

To tighten nut or bolt: 

1. 

Install nut as far as possible by hand. 

2. 

Select forward rotation.  

3. 

Place socket over nut, and grip tool firmly 
with both hands.  

4.  Gently squeeze throttle lever. Pressure 

against throttle lever determines speed of 
ratchet wrench. 

Important:

 If tool stalls while tightening, DO 

NOT raise air pressure above 90 psi. If nut 
will not tighten, do not continue attempts to 
tighten nut with the ratchet wrench. Use 
other methods or tools to tighten nut. 

5. 

Release throttle lever to stop ratchet wrench. 

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

Maintenance 

Lubrication 

The ratchet wrench should be lubricated 

daily

 (or 

before each use) with air tool oil through the air 
inlet. During continual operation, it should be re-
oiled every 1 to 2 hours. This can be done with an 
in-line oiler, or manually. If done manually, 
proceed as follows: 

1. 

Disconnect air hose from tool. 

2. 

Place 4 or 5 drops of air tool oil into air inlet. 

Summary of Contents for 505300

Page 1: ...chet Wrench 505300 JAT 300 505301 JAT 301 505302 JAT 302 Operation Parts Manual M 505300 Edition 2 06 2015 JET 427 New Sanford Road LaVergne TN 37086 Ph 800 274 6848 www jettools com Copyright 2015 JET JAT 301 shown ...

Page 2: ...t with any additional action needed JET has Authorized 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 Information JET is constantly adding new products For complete up to date product information check with your local distributor or visit the JET website How...

Page 3: ...hromium from chemically treated lumber Your risk of exposure varies depending on how often you do this type of work To reduce your exposure to these chemicals work in a well ventilated area and work with approved safety equipment such as face or dust masks that are specifically designed to filter out microscopic particles 9 Do not operate an air tool continually at full throttle without a work loa...

Page 4: ...proper caution 30 Use only recommended accessories improper accessories may be hazardous 31 Maintain tools with care Keep air tool clean and oiled for best and safest performance 32 Do not use combustible gases carbon dioxide oxygen or any bottled gas as an air source for the tool These can present risk of explosion and serious injury 33 Do not lubricate the tool with combustible liquids such as k...

Page 5: ...set forth in this document The instructions and warnings in this manual may 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 should be first priority If there are questions or comments please contact your local supplier or JET JET can also be reached at o...

Page 6: ...621 kPa 90 psi 621 kPa Vibration value 4 4 m s2 4 5 m s2 2 6 m s2 Noise level 1 99 dB A 108 dB A 87 dB A Rotation direction forward and reverse forward and reverse forward and reverse Grip Inline Inline Inline Overall Length 6 9 16 in 166 7mm 10 1 2 in 266 7 mm 10 1 2 in 266 7 mm Housing material Aluminum Aluminum Aluminum Net weight 1 14 lb 0 52 kg 2 60 lb 1 18 kg 2 63 lb 1 19 kg Shipping weight ...

Page 7: ...reverse rotation 2 Place socket over nut and grip tool firmly with both hands 3 Gently squeeze throttle lever Pressure against throttle lever determines speed of ratchet wrench Important If tool cannot loosen nut DO NOT raise air pressure above 90 psi Use other methods or tools to loosen nut 4 Release throttle lever to stop ratchet wrench To tighten nut or bolt 1 Install nut as far as possible by ...

Page 8: ...creased accordingly to compensate for extra long air hoses usually over 25 feet Inside diameter of hose should be minimum 3 8 inch General Air Tool Information If the air tool is not performing according to specifications the following are among the most common causes See also Troubleshooting section Contaminated air such as a dirty air system or water in the system Using wrong size tool for the j...

Page 9: ... such as SAE 10 Many JET air tools have integral oil reservoirs which should be kept filled when in line oilers are not used If greasing is required use a grease that is highly water resistant for front case components on air impact wrenches grinders and sanders Recycling Protect the environment Your tool contains materials which can be recovered or recycled When its useful life has expired please...

Page 10: ...erratic action Low air pressure Verify compressor has proper CFM rating for tool Check compressor regulator setting set air pressure to 90 psi Check for loose connections Moisture or obstruction in air hose Air supply must be clean and dry Clean out air hose s and remove any kinks or bends Improper size of air transmission lines hoses fittings or couplings Use appropriate sized air lines hoses Ver...

Page 11: ...ollowing pages To order parts or reach our 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 quickly and accurately ...

Page 12: ...12 JAT 300 301 302 Ratchet Wrenches 505300 JAT 300 1 4 inch Ratchet Wrench exploded view ...

Page 13: ...ing 608ZZ 1 21 JAT300 21 Planet gear carrier 1 22 JAT300 22 Ring gear 1 23 JAT300 23 Planet gear 3 Index Part No Description Qty 24 JAT300 24 Clamp nut 1 25 JAT300 25 Ratchet housing assembly includes 17 29 44 1 26 JAT300 26 Pin 3x12 8L 3 27 JSM4140 27 Spring pin 1 5x4L 1 28 SM 63036 O Ring 3x1 5 1 29 JAT300 29 Crank shaft 1 30 JAT300 30 Washer 1 31 JAT300 31 Drive bushing 1 32 JAT300 32 Yoke 1 33...

Page 14: ...14 JAT 300 301 302 Ratchet Wrenches 505301 JAT 301 3 8 inch Ratchet Wrench exploded view ...

Page 15: ...M 30121 Washer 1 22 SM 30122 Ring gear 1 23 SM 30123 Planet gear 3 Index Part No Description Qty 24 30124 Pin 4x13 8 3 25 SM 30125 Planet gear carrier 1 26 SM 30126 Clamp nut 1 27 SM 30127 Bushing 1 28 SM 30128 Ratchet housing 1 29 SM 30129 Bushing 1 30 SM 30130 Crank shaft 1 31 SM 30131 Drive bushing 1 32 SM 30132 Yoke 1 33 SM 30133 Direction switch 1 34 SM 30134 Spring 1 35 SM 30135 Spring cap 1...

Page 16: ...16 JAT 300 301 302 Ratchet Wrenches 505302 JAT 302 1 2 inch Ratchet Wrench exploded view ...

Page 17: ... 30121 Washer 1 22 SM 30122 Ring gear 1 23 SM 30123 Planet gear 3 Index Part No Description Qty 24 30124 Pin 4x13 8 3 25 SM 30125 Planet gear carrier 1 26 SM 30126 Clamp nut 1 27 SM 30127 Bushing 1 28 SM 30128 Ratchet housing 1 29 SM 30129 Bushing 1 30 SM 30130 Crank shaft 1 31 SM 30131 Drive bushing 1 32 SM 30132 Yoke 1 33 SM 30133 Direction switch 1 34 SM 30134 Spring 1 35 SM 30135 Spring cap 1 ...

Page 18: ...18 JAT 300 301 302 Ratchet Wrenches This page intentionally left blank ...

Page 19: ...JET 19 This page intentionally left blank ...

Page 20: ...20 JAT 300 301 302 Ratchet Wrenches 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jettools com ...

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