Question about 1983 Oldsmobile Delta 88
How do you attatch the alternator belt in a 1977 Delta 88?
On the older cars, the alternator was attached by two mounting bolts.
The long bolt goes through the alternator and is held on by a hex nut.
The short bolt goes through a slotted curved piece into the alternator
and is used for adjusting tension on the belt.
Depending on the location of the alternator, it may require you to work from the top of the engine or in some cases from under the car. Determine if any other belt is blocking the alternator belt. If so, this belt will have to be removed first to access the alternator belt.
Use a little penetrating fluid (e.g. PB Blaster) on the threads of both bolts and let it soak in to loosen up any corrosion. Using two wrenches/sockets(one to hold and one to loosen), loosen the long pivot mounting bolt; but do not remove. Then use a wrench or socket to loosen the short bolt and push the alternator towards the engine to allow the belt to be removed.
Installation is the reverse. You will have to lift the alternator up and outward to tighten the belt prior to tightening the short bolt. Then tighten the long bolt. Check tension by pressing down on the midpoint along the longest span between pulleys. Belt should not deflect more than 1/2 to 3/4 inch. If it does, loosen the two bolts and re-tension (you may need a pry bar for adjustment). Some setups use an idler pulley for adjusting tension.
Posted on Jan 24, 2009
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Posted on Jan 02, 2017
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