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Auto Parts and Repairs
Alternators
Serpentine Belts
Chevy S-10
Chevy Blazer S-10

How would you loosen the serpentine belt on a 4-cylinder 1999 Chevy S-10 to replace the alternator?

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2011-09-12 20:38:09
2011-09-12 20:38:09

i think u will need to locate ur tensioner pulley or that's what i call it it should be to the left front of the engine u should be able to put a wrench size unknown and push down to loosen the belt. the pulley will not connect to anything but a bracket to the engine . sorry if this doesnt help u

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Loosen alternator remove old belt. Reroute new belt, tighten alternator.

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Disconnect the battery. Loosen and remove the serpentine belt. Unscrew the bolts that hold the alternator in place and remove it. Disconnect the wires that still hold the alternator to the vehicle. Connect the new alternator to the wires and screw it back in place. Replace the serpentine belt.

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Disconnect negative battery terminal. Loosen the serpentine belt - loosen the tensioner. Disconnect the alternator connections at the terminals. Slip the serpentine belt off the alternator pulley and pull the alternator out. Install is reverse.

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loosen the one or two bolts holding the alternator in place, i believe 14mm, then loosen the 12mm on the adjuster (side) and "screw" the 12mm bolt down to lower the alternator down enough and replace the belt. This is almost the same for every Toyota engine which doesnt use an automatic belt tensioner (serpentine) on the alternator.


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