Engine Died then came back to life

[76C10Stepside]

Originally Posted by sntrym95

I just had a CS130 back bearing go bad it was a knocking sound. Since it was still under warranty from the local electric shop (it's a 220amp alt), I took it in and I watched them replace it.

You need to take the alternator apart as the bearing presses in from the inside so the whole coil assembly has to come out. Took the guy 5 minutes maybe to replace it. I diagnosed the noise with a screwdriver - flat end on the alternator and the plastic end to my ear. Tried a few different parts like the A/C compressor and idler pulley then the alternator to find it.

Thanks, Mike! I'll try the screwdriver test. Did the coil assembly have any wires that had to be desoldered or cut to remove it? The service manual I found mentions that, but does not say if it's necessary just to replace the bearings.

I took a wiper motor apart the other day, and one of the field coil wires was broken, but I could not get to the field to resolder it (field coil permanently mounted inside). Ended up installing another motor.