80 series Air Con Problems

Hi Tony:
I would like to suggest it may be the belt(s) .. I currently have the same problem, and *will* get around to fixing it shortly. But I think my belts are also due for replacement. Try tightening them up.Mine "squeal" when cold .. give it a minute or two to warm up and all is well.
Jack

Hi Tony, mine's had that problem before but when I replaced the belt realised it needed a new bearing also so you may want to check that. If the compressor has stopped altogether make sure there's no leaks as when empty it automatically will shut down.
RegardsLove the bush.
Chris

Tony,

Aircon belt needs to be a lot tighter than the fan/alternator pair. Do as suggested and check idler pulley bearing, then re-tighten a/c belt. If you had bonnet up, someone could turn it on while you do the listening.

If a/c isn't working, check clutch is engaging/disengaging too. Might need a trip to a sparkie. We had a problematic 75 series that always squealed the aircon belts, with occasional lapses in performance. Think it had a prob. in compressor. Was pleased to get rid of it. Air is most important accessory out here, even before c/control. Hooroo...

all responses above would be a good place to start not sure if l/c air con run on idler pulley but most common squeel at work would be loose belts .as an air con belts is not under load all the time because of clutch they do need to be tighter as well as idler pulley might be ok when air of but once clutch engages more strain on belt there for on idler.when air clicks on you get a sudden strain on belt so if its a little loose if will give a squeel for a few seconds.another quick fix is to run some dry soap on yor belts.

ditto most of the above ..make sure the belt is tight and if it continues check to make sure the pullies are not worn out. A Vee belt must make contact with sides of the vee pulley only and not on the bottom. If you have a flat cog type belt and it continues you may have mechanical problem with the system or a refrigeration problem which will need to be checked out by qualified person.Cheers all