GMC Repair: gmc a/c clutch removal, metric socket set, negative battery cable

Question
I have a 1991 gmc 1500 pickup and the a/c clutch won't stay engaged.I have been told that the air gap may be too wide and I should remove the outside plate and then remove the middle spacer.I'm not real sure how to do this.Could you help me?
thanks,
Don

Answer

logo Make sure you disconnect the negative battery cable before you start.

I do not have an illustration, but I will spend some time looking for one. First thing you will need is a basic metric socket set and "line-up" pry bar. You will need it to hold the clutch in place so that you can loosen the nut on the front of the clutch. There is more than likely, be a keeper or retainer. This is nothing more than a thin washer bent over the flat parts of the nut.

 Bend these back with by using a flat screwdriver and a small hammer. Take the nut off using a socket, while holding the clutch with a line-up pry bar. you should be able to pull it off. you may or may not need a wheel puller, which you can get at an auto parts store.

The clutch should break apart relatively easy. the middle spacer should be 1/4-3/8 of an inch thick. remove, fabricate to paper weight or ashtray. reverse process to reinstall clutch. and try to run your a/c.