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5.0 GALLON AIR TANK

Please read this instruction manual carefully prior to operating this product.  

Pay particular attention to the 

CAUTION

 and 

WARNING

 statements in this manual. 

Failure to comply with these instructions could result in personal injury or property 

damage. Retain these instructions for future reference.

USER MANUAL

NOTE: 

Your air tank comes with two 1/4” NPT ports and two 3/8” NPT port openings to allow 

installation in many configurations on your vehicle. To ensure safe and trouble-free use of your air 

tank, we strongly recommend that you install a drain cock and a safety pressure relief valve.

  

IMPORTANT:

 

a. VIAIR tanks are rated for 150 PSI maximum working pressure. Do not over pressurize. 

    Overpressuring may result in death or serious injury.

b. Tank is not intended to be used as a breathing device.

c. Always wear ANSI-approved safety glasses when operating air tank.

d. Bleed pressure from tank after each use and before servicing or adding attachments. 

e. Use only attachments rated for 150 PSI maximum.

CAUTION:

 DO NOT PRESSURIZE YOUR TANK UNTIL YOU HAVE INSTALLED ALL NECESSARY 

PORT FITTINGS AND ACCESSORIES.

a. Apply sealant to threads of fittings prior to assembly and hand tighten each part then use a   

    wrench for an airtight connection.

b. Do not over tighten if your port fittings are made from brass, since brass threads can be stripped.    

    The fittings need to be only airtight.

c. Always release air from tank before servicing or repairs. 

d. Wear safety glasses or goggles when operating this product.

 

WARNING: 

DRAIN TANK AFTER EACH USE. FAILURE TO DRAIN TANK AND REMOVE 

CONDENSATION WILL CAUSE TANK TO RUST PREMATURELY.    

a. To remove any accumulated condensation inside the tank, bleed pressure from tank until 

    pressure is approximately 5 PSI to 20 PSI.  

b. Drain water from tank by opening the drain cock valve.

c. If drain cock valve is plugged, release all air pressure from the tank. Remove and clean the drain  

    cock valve then reinstall.   

d. After water has been drained, close drain cock.

  

  

IMPORTANT:

 Please observe air tank’s Date of Manufacture (stamped on tank leg). Replace air 

tank 2 to 5 years from date air tank was first used, or use the date of manufacture as reference. 

Your adherence to air tank draining guidelines will determine the replacement date of your air tank.  

RUSTED TANKS CAN CAUSE EXPLOSION OR FATAL INJURY. Discard tank immediately if tank is 

rusted internally.               

     

NOTE:

 When using safety pressure relief valve, point the safety pressure relief valve away from your 

body. Use the pull ring on the safety relief valve to open the relief valve to vent any pressure inside 

the tank before attempting to service tank.      

  

 

Summary of Contents for 91050

Page 1: ...al that you and any other operator of this product read and understand the contents of this manual before installing and using this product SAVE THIS MANUAL FOR FUTURE REFERENCE USER MANUAL 5 0 GALLON AIR TANKS PART NO 91050 ...

Page 2: ... use a wrench for an airtight connection b Do not over tighten if your port fittings are made from brass since brass threads can be stripped The fittings need to be only airtight c Always release air from tank before servicing or repairs d Wear safety glasses or goggles when operating this product WARNING DRAIN TANK AFTER EACH USE FAILURE TO DRAIN TANK AND REMOVE CONDENSATION WILL CAUSE TANK TO RU...

Page 3: ...ly Can t get air from tank to inflate tire 1 Low tank pressure 1 Tank pressure must exceed tire pressure Increase tank pressure TROUBLESHOOTING GUIDE PROBLEM POSSIBLE CAUSE S CORRECTIVE ACTION 5 0 GALLON AIR TANK PARTS LIST A B C D E F Vibration Isolators 4 pcs Brass Inserts 4 pcs Mounting Bolts M11 x 35mm 4 pcs Washers 4 pcs Locking Washers 4 pcs Hex Nuts 4 pcs A B C D E F See Fig 1 for Mounting ...

Page 4: ...l shall be used reproduced translated converted adapted stored in a retrieval system communicated or transmitted by any means for any commercial purpose including without limitation sale resale license rental or lease without the prior express written consent of VIAIR VIAIR does not make any representations warranties or guarantees express or implied as to the accuracy or completeness of the Manua...

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