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T-Belt Tension Adjustment in '87 Factory Service Manual Revised?

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Old 06-07-2006, 08:40 PM
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T-Belt Tension Adjustment in '87 Factory Service Manual Revised?

I need to know the best method to tension the t-belt on my 87. My 87 FSM says to loosen the rockers and remove the spark plugs to adjust the t-belt tension. Then tensioner pulley is to be alternately rotated clockwise and counter-clockwise and then set in postion by turning clockwise to set the tension. The diagram then showns, but does not state, to tighten the tensioner to the 5:30 position. Then tighten the rockers and install the plugs. But this method is different for all the later VG30 t-belt tension instructions I have read about. Either they say 1) to tighten the belt with a .014" feeler gauge between the belt, with the pulley in about the 5:30 postion or 2) tighten the belt to deflect about 1/2" with 20 lbs, which should also be about 5:30 position. Which is correct? Also, anyone use an aftermarket tensioner? Dayco is the brand all the parts stores carry.

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Old 06-10-2006, 07:02 AM
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Well, after some research I've found an answer to my own question on the belt tension. There was a Nissan tsb to use method 2) above with the feeler gauge. However, many techs don't use the feeler gauge and just make sure the belt deflects about a 1/2" and the tensioner should be in the 5:30 position
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