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22. Repetitive motions and/or exposure to constant vibration can be harmful to hands and arms. Take 

breaks and relax your hands occasionally during extended operation of the ratchet wrench. 

23. Compressed air can be harmful if directed toward sensitive areas of the body, and may propel small 

particles caught in the air stream. Exercise proper caution. 

24. Use recommended accessories; improper accessories may be hazardous. 

25. Maintain tools with care. Keep the ratchet wrench clean and oiled for best and safest performance. 

 

Specifications 

Stock Number.............................................................................................................................JNS-5052 
Square Drive (in.) ................................................................................................................................. 3/8 
Free Speed (no load) (RPM)................................................................................................................ 160 
Maximum Torque (ft/lb).......................................................................................................................... 50 
Required Air Pressure (PSI)................................................................................................................... 90 
Average Air Consumption (CFM) ............................................................................................................. 4 
Air Inlet Diameter (in.)................................................................................................................... 1/4 NPT 
Air Hose Inside Diameter (in.) ............................................................................................................... 3/8 
Vibration Value (m/s

2

)......................................................................................(according to EN12096) 7.2 

Overall Length (in.) ........................................................................................................................... 11.62 
Net Weight (lbs.)................................................................................................................................. 2.76 
 
 
The above specifications were current at the time this manual was published, but because of our policy of 
continuous improvement, WMH Tool Group reserves the right to change specifications at any time and 
without prior notice, without incurring obligations. 

 

 

 

 

 

 

 

 

Record your purchase information here for quick reference: 
 
Stock No.: 

Serial No.: 

Purchased From: 

Date Purchased: 

 

 
 
 

 

Summary of Contents for JNS-5052

Page 1: ...aintenance Instructions 3 8 inch Air Ratchet Wrench Model JNS 5052 WMH TOOL GROUP 2420 Vantage Drive Elgin Illinois 60124 Part No M JNS5052 Ph 800 274 6848 Revision B 1 07 www wmhtoolgroup com Copyright WMH Tool Group ...

Page 2: ...ate and an explanation of the complaint must accompany the merchandise If our inspection discloses a defect we will repair or replace the product or refund the purchase price at our option We will return the repaired product or replacement at our expense unless it is determined by us that there is no defect or that the defect resulted from causes not within the scope of our warranty in which case ...

Page 3: ... chromium 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 10 Do not operate this tool while tired or under the influence of drugs al...

Page 4: ... safest performance Specifications Stock Number JNS 5052 Square Drive in 3 8 Free Speed no load RPM 160 Maximum Torque ft lb 50 Required Air Pressure PSI 90 Average Air Consumption CFM 4 Air Inlet Diameter in 1 4 NPT Air Hose Inside Diameter in 3 8 Vibration Value m s 2 according to EN12096 7 2 Overall Length in 11 62 Net Weight lbs 2 76 The above specifications were current at the time this manua...

Page 5: ...Figure 1 NOTE Air tool oil not provided It may be purchased from your JET dealer or is available at most major hardware and tool stores SAE 10 weight oil or sewing machine oil may be used as a substitute Do not use detergent oil 3 Re connect the air Run the ratchet wrench without load for a few seconds to distribute the oil throughout the tool 4 When you are finished operating the ratchet wrench b...

Page 6: ... inspected and repaired at an authorized service center Torque is diminished Air leakage Check connections at the air inlet o rings etc Make adjustments repairs as needed Starts immediately as soon as air is connected without trigger being pressed Throttle valve or trigger is malfunctioning Inspect and repair throttle valve and or trigger Abnormal vibration and or excessive heat develops in the to...

Page 7: ...7 ...

Page 8: ...8 WMH Tool Group 2420 Vantage Drive Elgin Illinois 60124 Phone 800 274 6848 www wmhtoolgroup com ...

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