background image

 

 

 

Read this material before using this product. Failure to do 

so can result in serious injury. SAVE THIS MANUAL.

When unpacking, make sure that the product is intact and undamaged.  

If any parts are missing or broken, please call 1-800-444-3353 as soon as possible.

Visit our website at: http://www.harborfreight.com 

Copyright

©

 2011 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 Freight Tools.  Diagrams within this manual may not be drawn proportionally.  Due to continuing 

improvements, actual product may differ slightly from the product described herein.  Tools required for assembly and service may not be included.

68427 1/2” Air Wrench

68426 3/8” Air Wrench

Professional Air Ratchet Wrench

68428 1/4” Air Wrench

Summary of Contents for 68426

Page 1: ...11 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 Freight Tools Diagrams within this manual may not be drawn proportionally Due to continuing improvements actual product may differ slightly from the product described herein Tools required for assembly and serv...

Page 2: ...be followed including the following General a To reduce the risks of electric shock fire and injury to persons read all the instructions before using the tool Work Area a Keep the work area clean and well lighted Cluttered benches and dark areas increase the risks of electric shock fire and injury to persons b Do not operate the tool in explosive atmospheres such as in the presence of flammable li...

Page 3: ...ool is easier to control g Check for misalignment or binding of moving parts breakage of parts and any other condition that affects the tool s operation If damaged have the tool serviced before using Many accidents are caused by poorly maintained tools There is a risk of bursting if the tool is damaged h Use only accessories that are identified by the manufacturer for the specific tool model Use o...

Page 4: ... 7 Use this tool with both hands only Using tools with only one hand can result in loss of control 8 Do not lay the tool down until it has come to a complete stop Moving parts can grab the surface and pull the tool out of your control 9 Do not force the tool Use a larger one if needed 10 Do not use an extension on the tool to increase force Vibration Precautions This tool vibrates during use Repea...

Page 5: ...gure A on page 6 and Figure B on page 7 An in line shutoff ball valve is an important safety device because it controls the air supply even if the air hose is ruptured The shutoff valve should be a ball valve because it can be closed quickly Note If an automatic oiler system is not used add a few drops of Pneumatic Tool Oil to the air inlet before operation Add a few more drops after each hour of ...

Page 6: ...onnects air to tool B Filter Prevents dirt and condensation from damaging tool or work piece C Regulator Adjusts air pressure to tool D Lubricator optional For air tool lubrication E Coupler and Plug Connects hose to tool F Leader Hose optional Increases coupler life G Air Cleaner Dryer optional Prevents water vapor from damaging work piece H Air Adjusting Valve optional For fine tuning airflow at...

Page 7: ...For vibration reduction E Main Air Line 3 4 minimum recommended Distributes air to branch lines F Ball Valve To drain moisture from system G Branch Air Line 1 2 minimum recommended Brings air to point of use H Filter Prevents dirt and condensation from damaging tool or work piece I Air Cleaner Dryer optional Prevents water vapor from damaging work piece J Regulator Adjusts air pressure to tool K L...

Page 8: ...istraction 3 Route air hose along a safe route to reach work area without creating a tripping hazard or exposing the air hose to possible damage The air hose must be long enough to reach work area with enough extra length to allow free movement while working 4 Secure loose workpieces using a vise or clamps not included to prevent movement while working 5 There must not be hazardous objects such as...

Page 9: ...ed output 1 Not enough air pressure and or air flow 2 Obstructed trigger 3 Incorrect lubrication or not enough lubrication 4 Blocked air inlet screen if equipped 5 Air leaking from loose housing 6 Mechanism contaminated 7 Vane wear or damage 1 Check for loose connections and make sure that air supply is providing enough air flow CFM at required pressure PSI to the tool s air inlet Do not exceed ma...

Page 10: ...er Here Note If product has no serial number record month and year of purchase instead Note Some parts are listed and shown for illustration purposes only and are not available individually as replacement parts Part Description Q ty 1 Housing 1 2 Spring Pin 3 18 1 3 Air Inlet 1 4 Throttle Lever 1 5 Valve Pin 1 6 Valve 1 7 Throttle Valve 1 8 Spring 1 9 O Ring 22 8 2 1 10 Deflector 1 11 Ball Bearing...

Page 11: ...Page 11 For technical questions please call 1 800 444 3353 Air Ratchets 68428 1 4 Air Ratchet Assembly Diagram ...

Page 12: ...Z 1 21 Washer 1 22 Housing 1 23 Anvil 1 24 Cover 1 25 Coupling Sleeve 1 26 Coupling Nut 1 27 Bushing 1 28 Outer Housing 1 29 Grease Fitting 1 8 1 Part Description Q ty 30 Crank Shaft 1 31 Drive Bushing 1 32 Yoke 1 33 Direction Switch 1 34 Spring 1 35 Lock Pin 1 36 Washer 1 37 Ratchet Pawl 1 38 Ratchet Anvil 3 8 1 39 Spring 2 40 Pin Ø4 5 12 7 1 41 Thrust Washer 1 42 Retaining Ring RTW 31 5 1 43 Ste...

Page 13: ...Page 13 For technical questions please call 1 800 444 3353 Air Ratchets 68426 3 8 Air Ratchet Assembly Diagram ...

Page 14: ...Z 1 21 Washer 1 22 Housing 1 23 Anvil 1 24 Cover 1 25 Coupling Sleeve 1 26 Coupling Nut 1 27 Bushing 1 28 Outer Housing 1 29 Grease Fitting 1 8 1 Part Description Q ty 30 Crank Shaft 1 31 Drive Bushing 1 32 Yoke 1 33 Direction Switch 1 34 Spring 1 35 Lock Pin 1 36 Washer 1 37 Ratchet Pawl 1 38 Ratchet Anvil 1 2 1 39 Spring 2 40 Pin Ø4 5 12 7 1 41 Thrust Washer 1 42 Retaining Ring RTW 31 5 1 43 Ste...

Page 15: ...Page 15 For technical questions please call 1 800 444 3353 Air Ratchets 68427 1 2 Air Ratchet Assembly Diagram ...

Page 16: ... exclusion or limitation of incidental or consequential damages so the above limitation of exclusion may not apply to you THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS To take advantage of this warranty the product or part must be returned to us with transportation charges prepaid Proof of purchase date and an ...

Reviews: