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Reinstalling drive belt after installing new compressor

1998-gmc-jimmy71 on Sat May 26, 2012 4:50 AM User is offline

Year: 1998
Make: gmc
Model: jimmy
Engine Size: 4.3L
Refrigerant Type: r134a

I just installed a new ac compressor. It looks identical and port and switches are in same place. I installed it and now I noticed i do not have enough gap to pull drive belt around pully. Is this typical of drive belt needing to replace it for a slight bigger one for a replacement of compressor that may be slightly bigger in diameter or I have wrong compressor and i need to replace it for another one? Thanks.

iceman2555 on Sat May 26, 2012 10:54 AM User is offlineView users profile

It appears that the clutch/pulley diameter may be larger on the replacement compressor. The compressor for this unit has different variations of clutch sizes. The compressor body and attachments are identical, however, the clutches can be a bit larger. Or you could simply purchase a belt slightly longer than your unit and install this.
Also try to set the belt in all pullers and then slide the belt up over the idler pulley surface last. The outside diameter of the ac pulley may be a much larger diameter than the pulley itself and this may result in the problem that you are encountering.
Good luck!

The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
Thomas Jefferson

1998-gmc-jimmy71 on Fri June 01, 2012 11:53 PM User is offline

I had to replace belt to 1/2 inch longer. Thanks.

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