[Vwdiesel] Update: 1982 caddy a/c and alternator v-beltadjustments.

Rudy petersenrudy at hotmail.com
Sat Jul 25 18:45:20 PDT 2009

I use a Bottle Jack from the bottom to do the same thing, sometimes you have
to shim the bottom of the Jack to get the right angle but it works pretty

-----Original Message-----
From: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com] On
Behalf Of Roger Brown
Sent: Saturday, July 25, 2009 1:43 PM
To: dlist
Subject: Re: [Vwdiesel] Update: 1982 caddy a/c and alternator

I had a broken pivot bolt on my '81 A/C compressor, fix documented below:

And the way I did my belts was a 2x4 across the engine bay, one end on the
passenger strut mount, other end on a HiLift jack in front of the vehicle.
Then wrap a strap around the
2x4 and loop under the alternator.  Loosen both tension brackets then lift
the jack up a few inches to get a good tension on both belts.  Then tighten
first the A/C then alt. 
tensioners and remove the strap and 2x4.

ken1 wrote:
> ken1 wrote:
>  I have tried three (3) times to tighten the belts on my 1.6l NA. Each
time, the a/c belt still flaps a lot. I do not have OEM belts installed at
this time, but do have them on hand. First I will state how I have tried to
do it, then what I think happens and then need to know what to do to solve
the problem.
>  What I do; remove alternator, put on belts, tighten a/c compressor belt.
>  Then replace alternator and tighten the belt. Appears  that by following
my steps, when I tighten the alternator belt, the geometry changes and the
a/c compressor is moved and the belt gets loose. I can tell that the PO had
used a pry-bar to apply tension to the alternator belt, because he wound up
bending the top of the front apron in front of the alternator. After
performing the same process three (3) times and getting the same results,
decided to ask for assistance.
>  What am I doing wrong???/
>  Help! Summer has arrived in north Texas, got to have access to cooler
>  OEM belts are Conti AVX10x643 and Conti AVX13x960.
>  TIA,
>  ken
> ******
> Update for A/C compressor and Alternator v belt adjustment for my 1982
> Practice makes perfect;; as long as the process that you are practicing is
> When I started my quest, I had already performed the work three (3) times,
of course imperfectly. After receiving suggestions from my fellow board
members, I finally got it almost right on the fifth try. I used a modified
version suggested by Roger.  Yet, there was one little oversight; the
alternator pulley was not inline with the inside compressor pulley, and had
been out of alignment all along. So, this morning, I embarked on practice
run number 5.5.
> I only had to remove the alternator to remove the spacers and put it back
and re-tighten the belt.
> I have even tried to document my method with a couple of pictures. I will
clean up my V-belt Adjustment kit for future adjustments. Will monitor the
belts for looseness and being too tight daily for a while.
> Once again, I wish to thank everyone for your unselfish aid.
> First test yielded about 60 degree Fahrenheit air being output by the 
> A/Cin the MAX a/c position, about 70 degrees on lower A/C setting. I have
installed R-134 into the system. Need to double-check to see if I need to
add some more to the system P.S. some of the small obstacles encountered:
> 1) Crankshaft/waterpump/compressor belt never got tight enough through
steps 1-3.
> 2) Suction a/c line rotated at the compressor and caused water pump pulley
(inside edge) to contact the inside edge of the compressor pulley, resulting
in sparks and a nearly razor sharp edge on both. Solution, emery cloth by
hand to burnish the edges. steps 4-5.
> 3) Finally got it right? at step 5.5, after removing the spacers on the
alternator shaft.
> 4) Discovered that radiator fan wires were installed bacKwards, so fan had
been "blowing"? air out of the engine compartment instead of sucking cool
air into the compartment. 
> _______________________________________________
> Vwdiesel mailing list
> Vwdiesel at vwfans.com
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