Engine/Transmission (1994 - 1998) 12 Belt Alignment

[DogDiesel]

I have a '97 12 valve eingine in my '93 Chevy pickup. Has 45K in truck now, but I have been plagued with serpentine belt alignment problems since installation.

Problem is the AC pump is forward just about one rib (1/8" +).



The engine came out of Utah, and it had an aftermarket very large 23" fiberglass fan. It had a unique (2" shorter) serpentine belt, and a smaller fan pulley and fan bearing mount. It had perfect alignment with this setup.



The aluminum pulley self-destructed, and my problems began. I replaced the pulley and mount with OEM and now a normal OEM length belt.



I compensated with washers on the alternator, and washers behind the OEM fan bearing mount. This brought alignment close, and is fine, except when I run the AC.



If I run the AC, the belt begins to wear on the rear side and is short-lived.



I just ordered a complete AC / alternator mount. There is no P/N on the mount. Hope this fixes the problem. All parts would be OEM.



Am I on the right path, or is the mount merely money spent?



Wayne

 

[DogDiesel]

New Mount Installed

Paid dearly for it, installed it...



And what do you know?



The Serpentine aligns perfectly. Before, I was one notch off at the AC Pump. Tried everything to align, and always off.



Simple job, and after installation, I put on a new belt, and it is aligned.



I put both mounts side by side, and there seemed to be little or no difference. however as soon as I put the belt on, I knew there was.



Well, day after tomorrow, I launch, towing a 31' enclosed trailer from MD to CA...



It will be nice to have AC, and belts that last.



Wayne