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H5D EMISSION 454 CHEV

Home > Discussion Forum > Mechanic's Corner - Engines

Email Author email KYLE ROACH  Reply to Message reply to message  Post New Message post new message      search forums
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H5D EMISSION 454 CHEV KYLE ROACH 7-16-01  
86 PACE ARROW 454 CHEV H5D EMISSION. A.I.R. PUMPS RUMBLES SOUNDS LIKE EXHAUST LEAK. HOW TO CHECK IF WORKING PROPERLY? HOW DIFFICULT TO REPLACE?
Re: H5D EMISSION 454 CHEV Kent 7-17-01  
86 PACE ARROW 454 CHEV H5D EMISSION. A.I.R. PUMPS RUMBLES SOUNDS LIKE EXHAUST LEAK. HOW TO CHECK IF WORKING PROPERLY? HOW DIFFICULT TO REPLACE?

These are sliding vane, positive displacement pumps. If the belts are at the proper tension and the pump mounts aren't loose, etc.,then the 15 year old pump is most likely on it's way out. They either work, (pump air), or they sieze, a condition signaled by a loud screech from the drive belt. There is a certain amount of noise generated by the check valves in the pump out-put tubing. The pumps are fairly easy to change, finding a good replacement is the trick.
Re: H5D EMISSION 454 CHEV evelyn alexander 11-13-06  
Where can i find a diagram for 454 engine belts replacements for my rv need to replace the air and power steering belts
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