aaron1009
New member
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- Birmingham, AL
I apologize in advance. I troll around here and contribute when I can, so I'm familiar with how often these types of questions are asked. Stay with me.
I've looked over the TMs and even a diagram that a prominent member put together and linked in another thread but can't quite figure this out. Probably a simple answer. Here we go.
Short version: Lost my Alt 1 belt. I replaced the belt and am not seeing 14.4v from the back of the alt. Tested the two-pin connector and it acts as if it should (12v on red, 0v on brown with key off. 12v on red and 12v on brown with key on). Key on, no Gen1 light, Gen2 is lit. Running, no light on either. Is this normal? Shouldn't the Gen1 light be lit since I'm not seeing proper voltage?
Long version: Transmission line into the radiator sprang a pinhole leak, which almost certainly covered the Alt 1 belt, causing belt slippage and wear. During a previous alt rebuild, I managed to knock the back out of Alt 1 while trying to hammer the bearing out of the back (yes, I know...). I found this piece, which I had JB Welded back on, laying on the frame rail when I parked the truck. Lucky, lucky, lucky. Of course, I "JB'ed" it back on, and put on the new belt on once it had set. I'm afraid that without this back portion of the alt that perhaps the shaft had enough wiggle room to damage something inside. I haven't yet had an opportunity to pull it and see. That's the plan for tomorrow.
EDIT: For clarity, I found the snapped belt as well as the back portion of Alt 1 in the engine bay at the same time. Same occurrence as the transmission line leak. Huge cluster all at once.
So, am I missing something simple? Yes, bulb has been checked.
I've looked over the TMs and even a diagram that a prominent member put together and linked in another thread but can't quite figure this out. Probably a simple answer. Here we go.
Short version: Lost my Alt 1 belt. I replaced the belt and am not seeing 14.4v from the back of the alt. Tested the two-pin connector and it acts as if it should (12v on red, 0v on brown with key off. 12v on red and 12v on brown with key on). Key on, no Gen1 light, Gen2 is lit. Running, no light on either. Is this normal? Shouldn't the Gen1 light be lit since I'm not seeing proper voltage?
Long version: Transmission line into the radiator sprang a pinhole leak, which almost certainly covered the Alt 1 belt, causing belt slippage and wear. During a previous alt rebuild, I managed to knock the back out of Alt 1 while trying to hammer the bearing out of the back (yes, I know...). I found this piece, which I had JB Welded back on, laying on the frame rail when I parked the truck. Lucky, lucky, lucky. Of course, I "JB'ed" it back on, and put on the new belt on once it had set. I'm afraid that without this back portion of the alt that perhaps the shaft had enough wiggle room to damage something inside. I haven't yet had an opportunity to pull it and see. That's the plan for tomorrow.
EDIT: For clarity, I found the snapped belt as well as the back portion of Alt 1 in the engine bay at the same time. Same occurrence as the transmission line leak. Huge cluster all at once.
So, am I missing something simple? Yes, bulb has been checked.
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