CHECKING TENSION AND ADJUSTING 1989 deville 8 cyl 4.5 L
See Figures 1, 2, 3, 4, 5, 6, 7 and 8 Inspect your car's drive belts every 7,500 miles or six months for evidence of wear such as crack...

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See Figures 1, 2, 3, 4, 5, 6, 7 and 8
Inspect
your car's drive belts every 7,500 miles or six months for evidence of
wear such as cracking, fraying, and incorrect tension. Replace the belts
at a maximum of 30,000 miles, even if they still look acceptable.
You
can determine belt tension at a point halfway between the pulleys by
pressing on the belt with moderate thumb pressure. The amount