I just found right belt (95 inch) serpentine for my 1991 F150 to by pass the Air Compressor, howecer following the route that is listed under the hood it appears that the new belt route will rub slightly against the existing Air Compressor Pully. Is this going to work out or will it wear it down. The Air Comp is shot to heck, (Burned up) and I was actually hoping that the bypass would let me start her up but no go . Anyway, once I get her started am I gonna have trouble with the by passed belt path??? I need to know if I must take a crack at removing the air compressor for this by pass to be successful?? Not sure if I can handle that. also should I somehow disconnect the wires from the air compressor now that its no longer in the loop??? Help

 

If the compressor isn't operating, the pulley just spins freely and uses up zero power, so I'd use the correct belt and simply disconnect the connector just behind the pulley, top or bottom, depending on the compessor model you have. This way it cannot engage.

If the clutch is shot, making scraping noises even if it isn't on, then you'd have to bypass it.

 

Yeah, somthing was scraping (not sure if it still is, as she won't start), but what about the fact that the back of the belt is touching the Air comp pully slightly have you seen this? is it a problem? I mean after I bypassed it the belt touches slightly!

 

If the belt is touching the pulley, then one of two things are going to happen:

1) The pulley is going to spin, and the bypass is not really bypassing anything.

2) The pulley is NOT going to spin because it is locked up, and the rubbing on the belt will casue the belt to be worn down until it breaks.


Your best bet is to remove the compressor. It's really not that hard...

But there is one thing to take into consideration.

<legal disclaimer>
Your '91 probably still uses R-12 Freon (unless it has been converted to R-134 already) and your freon lines are probably full of Freon. In order to remove the compressor, you would have to disconnect the freon hoses which will casue the Freon to escape into the atmosphere. If it is R-12, It is illegal to purposely let it out. the proper way is to take it to a shop which will use a machine to suck it out and recycle it.

</end of legal disclaimer>

Assuming there is no R-12 in the lines that will escape into the atmosphere:

1)Remove the electrical plug that connects to the Compressor Clutch.
2) Disconnect the two Freon hoses from the compressor
3) Remove the bolts holding the compressor to the bracket
4) Secure the hoses and electrical connector with zip ties or something to keep them from getting tangled in the fan

It's not hard to remove at all.



Remove the two hoses that attach to the compresor