AC York Compressor Clutch Acting Up!!!

[Paul Caouette]

Belt wobble when the pulley is loaded might be a function of some stretch
when the tension side of the belt has to "work."

paul from my droid
On Mar 18, 2012 1:00 AM, "L DC" <ldc007usa at yahoo.com> wrote:

> Hello all!!
>
> I recently had all the AC hoses rebuilt, and I cleaned and painted York
> compressor before recharging system with R134A freon in my '87 VW QSW.
>
> Today, I hooked up a vacuum pump to the compressor and vacuumed the whole
> system and vacuum held just fine, which indicated no leaks. I replaced all
> the o-rings and drier, of course.
>
> After filling the system with two 12-once cans of freon, the clutch began
> to engage but would turn very, very slow. I tapped on the AC clutch a
> couple of times on it with a piece of wood and it engaged at the same speed
> as the the pulley, but would make a nut-cracking-like noise that would go
> away if I revved the engine past 1200 RPMS.
>
> The air vents inside the car began to emit air cold enough to feel
> comfortable but could use a bit more freon.
>
> Anyway, if I kept revving the engine at around 1200 or slightly more, the
> vents kept on fanning colder air.
>
> I went for a short drive and some 3 minutes later the air out of the vents
> was no longer cold. I pulled over and noticed the AC clutch was
> dis-engaged. I tapped some three time on the clutch and it engaged back
> again. I get back home and the AC clutch is once again dis-engaged.
>
> Again, I tapped on the AC clutch and it engage again I went inside the
> car. I kept the engine revs at about 1500 RPMs for about 7 minutes the AC
> worked perfectly.
>
> What the heck is going on?
>
> Is the AC clutch going bad or needs some type of cleaning?
>
> Could it be the AC relay?
>
> Bad or poor ground?
>
> Also, when the AC clutch is engaged, the belt behaves as if it were way
> too loose, wobbling as if it were to come off the pulley at any moment. I
> turned engine off to check for slack on the belt and it was not tight,
> tight, but it was not loose either, what gives?
>
> A note, that might clear the wobbling belt when clutch is engaged:
> The suction hose coming from the evaporator inside the car had a
> canister-like cylinder that when I had the hose rebuilt was not placed in
> the same exact spot and, thus, could not fit back in the car. Therefore, I
> took the hose back to the shop and had then remove the canister altogether.
> What's the function of this canister-like device on the suction hose? Could
> the elimination of it be the cause for which the AC compressor puts on that
> extra vibration on the belt?
>
> Thanks again for your much appreciated input.
>
> Best Regards!!
>
> -Louis
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