Lost air pressure

[Raymond smith]

On my 4104  671 the air compressor stopped pumping. What connects it to the engine and are parts available. Expensive fix?  Thanks in advance. Raymond

[gus]

Not pumping doesn't necessarily mean not turning.

There are valves involved both inside the comp and just after the comp outlet.

Check that one first then the comp.

[Raymond smith]

I should know better. Sorry. And now the rest of the story. Made it 40 miles before i was stopped. Checked the unloaders then took the main line off compressor and nothing coming out. So it was pumping and then it said no more air for you and i was stopped with maxis on. I suspect it is not turning. Will not be taking apart for 2 weeks. Just want to know what i am up against. Thanks Raymond

[luvrbus]

Most of those were fiber gear driven the fiber just wears downs and slips if original.No fiber gears left around I have saw but the newer updated metal drive works fine easy to find or it could be just the key stripped in the drive  

[chessie4905]

   The factory fibre gear on our 4104 stripped several years ago. Changed it over to a steel one. The fibre one was used in case it failed in pieces, it wouldn't take out the engine gear train.