A/C compressor

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Old 06 Jul 2006, 04:15 pm   #1 (permalink)
JM
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Default A/C compressor

Is there any maintenance needed on the A/C compressor.

Oil top or ?
Or is it just belts and hoses.
I cant see any info in the Haynes Manual.

JM Uk



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Old 06 Jul 2006, 05:24 pm   #2 (permalink)
mrdarrett@gmail.com
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Default Re: A/C compressor


JM wrote:
> Is there any maintenance needed on the A/C compressor.
>
> Oil top or ?
> Or is it just belts and hoses.
> I cant see any info in the Haynes Manual.
>
> JM Uk



I'd say just leave it alone. But, make sure to run the A/C a few times
in the winter, to keep the refrigerant cycling. The refrigerant
contains some lubricating oil in it, which will keep everything
properly lubricated, and keep your seals happy.

That reminds me... how often should the serpentine belt (not timing
belt) be changed? I don't remember seeing that in Haynes either.

Michael

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Old 06 Jul 2006, 11:18 pm   #3 (permalink)
johngdole@hotmail.com
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Default Re: A/C compressor

Normally there is little to do about the AC system other than keeping
the condenser clean (for better heat transfer), belts properly
tensioned, and just use a thermometer to measure the cooling
temperature drop at the vent. If you are getting a 40degF drop, then
things are working.

For the backyard mechanic, one can check for craks and leaks at the
hoses and pipes; look for bearing seizing (glazed belt, grinding
noise), no corrosion of electrical connectors. You can also measure the
gap in the AC clutch, making sure it's within specs. (never done that
before).

Most later model cars have their maintenance interval lengthened. But I
still believe the 5 year/60,000 mile schedule worked well for the
timing belt/water pump/oil seals/drive belts. If your engine is chain
driven, I'd change the belts and hoses at this interval. I use Gates
belts and hoses. You pay Toyota more than Gates prices (www.gates.com),
don't settle for the Bando belts they give you over the counter.

Idler pulleys pretty much used up all their lube by 60,000 and will
start to make noise when you shake it. They'll last longer, but
changing them can quiet things down.

Water pump may or may not show signs of leakage at this mileage. Some
become harder to turn even with the coolant changed at regular
intervals. After all the work taking things apart, just change it.

Cam seals usually show a little seepage and the rubber hardens. Crank
seals usually are in better shape. They may look fine but they can leak
fumes showing slight seepage only. I found out after the smell
disappeared after changing them. It's a good idea when you have
everything apart anyway.


mrdarrett@gmail.com wrote:
> JM wrote:
> > Is there any maintenance needed on the A/C compressor.
> >
> > Oil top or ?
> > Or is it just belts and hoses.
> > I cant see any info in the Haynes Manual.
> >
> > JM Uk

>
>
> I'd say just leave it alone. But, make sure to run the A/C a few times
> in the winter, to keep the refrigerant cycling. The refrigerant
> contains some lubricating oil in it, which will keep everything
> properly lubricated, and keep your seals happy.
>
> That reminds me... how often should the serpentine belt (not timing
> belt) be changed? I don't remember seeing that in Haynes either.
>
> Michael


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Old 07 Jul 2006, 11:48 am   #4 (permalink)
Daniel
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Default Re: A/C compressor

johngdole@hotmail.com wrote:
> You pay Toyota more than Gates prices (www.gates.com),
> don't settle for the Bando belts they give you over the counter.

=====================
I'm probably going to be sorry I asked, but why are you so opposed to
Bando belts?
Put one on from Toyota, marked Toyota and Bando for the A/C and
alternator belt 25,000 miles ago. Retensioned it once. Holds tension
just fine. Has multiple layers of reinforcement judging by the side of
the belt. Looks like brand new. Not even the tiniest crack in the ribs
on the underside.
I've seen cheap belts before, but I do not believe this is one of them.
I've been so impressed by the quality of the Toyota parts overall, from
the bolts, to the coolant, to the hoses and everything else, that I
would not use other brands even if you contend they are OEM suppliers.
For me, the Toyota brand name on parts is worth it in preserving the
original quality of the car.

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Old 24 Nov 2006, 05:27 pm   #5 (permalink)
Lance D.
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Default Re: A/C compressor

On Fri, 07 Jul 2006 09:48:51 -0700, Daniel wrote:

> johngdole@hotmail.com wrote:
>> You pay Toyota more than Gates prices (www.gates.com),
>> don't settle for the Bando belts they give you over the counter.

> =====================
> I'm probably going to be sorry I asked, but why are you so opposed to
> Bando belts?
> Put one on from Toyota, marked Toyota and Bando for the A/C and
> alternator belt 25,000 miles ago. Retensioned it once. Holds tension
> just fine. Has multiple layers of reinforcement judging by the side of
> the belt. Looks like brand new. Not even the tiniest crack in the ribs
> on the underside.
> I've seen cheap belts before, but I do not believe this is one of them.
> I've been so impressed by the quality of the Toyota parts overall, from
> the bolts, to the coolant, to the hoses and everything else, that I
> would not use other brands even if you contend they are OEM suppliers.
> For me, the Toyota brand name on parts is worth it in preserving the
> original quality of the car.


Toyota belts are rebranded bando belts, they are not a problem.
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