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My LLW Alternator that I replaced just had a semi-failure.
The Case screws that hold the body together had a strippage from the re-builder.
One of the Case screws backed out due to strippage and started to hit the Alternator fan.
A 4.5mm Nut wasn't replaced on the screw on the back, so I added 3 more to prevent this from happening.
So if you get a replacement alternator, be sure that you use 4.5 mm nuts and lock washers to the back of the case bolts to prevent this from happening to you.
missing nuts.

The Case screws that hold the body together had a strippage from the re-builder.
One of the Case screws backed out due to strippage and started to hit the Alternator fan.
A 4.5mm Nut wasn't replaced on the screw on the back, so I added 3 more to prevent this from happening.
So if you get a replacement alternator, be sure that you use 4.5 mm nuts and lock washers to the back of the case bolts to prevent this from happening to you.
missing nuts.
