Pre 84 Trucks 1st gen pickups

alternator not charging

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Old 01-08-2016, 01:08 PM
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alternator not charging

Swapped the motor mounts today,and shorted the alternator with a wrench.Do these pups have a fuse? Not charging now.1983 4wd 22R Thanks-Blair
Old 01-08-2016, 05:08 PM
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Red face

Pups and fuse is that like a short temper my ex wife was like that.

Well what all does not work ??

It may have caused all manor of circuit protection to open or even wires to burn off.

Forget to disconnect the ground ??

Your so good you never needed to before ??
Old 01-08-2016, 05:45 PM
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Yes there is ckt protection like Wyoming says...

Get a multimeter. Check the fusible link wire AND 80-Amp fusible link that looks like a fuse. The latter needs to be unscrewed at terminal in order to replace, but do not replace until ur absolutely, positively swear it is bad. Checking means measuring resistance, voltage, and visual inspection.
Sent between chopsticks pick ups of chow mein.

Last edited by RAD4Runner; 01-08-2016 at 05:48 PM.
Old 01-09-2016, 10:28 AM
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Yep forgot to disconnect it.Coors induced mistake. My buddys truck did not have an 80 amp fuse that we could find. The alt just wasn't charging,we had it tested and it was shot.Hard to wiggle that thing out of there.After it charged at around 14v.Im not certain that the alt was not on its way out cause the pulley was screamin at 3800 rpm. Thanks for the replies-Blair
Old 01-09-2016, 10:48 AM
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Red face

I have found the best way for me to remove the alternator is to pull the lower hose off the radiator then it comes out nice and easy .

Install the same way.

It is not something I need do several times a month.

Gives me a excuse to change coolant as well.
Old 01-09-2016, 10:50 AM
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Originally Posted by bspeth
...My buddys truck did not have an 80 amp fuse that we could find.
Are you working on your buddy's truck or yours?
Your sig says:
"bspeth 86 22re 4x4"
Yes, on the 86 22RE, there are:
(1) Fusible link wire (80Amp) - the wire that goes from batteryy positive to fuse block, and
(2) Fusible Link module (80Amp).

Here's how the charging system on 86 22RE 4x4 works.

You were changing the engine mount, so engine and alternator must NOT be running.
IF alternator is not running, shorting the screw terminal post to ground [EDIT: Is not likely] to hurt the alternator. More likely, the screw post, the shorting object and the fusible link will melt.

...Coors induced mistake.
Coors... NAH... Next time try this before working on truck
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Last edited by RAD4Runner; 01-09-2016 at 03:14 PM.
Old 01-10-2016, 07:22 AM
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we were working on my buddys 83.Been a while since I have visited the site so I gotta change my sig.
Old 01-12-2016, 06:20 AM
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Originally Posted by RAD4Runner
Coors... NAH... Next time try this before working on truck
Can't help much with the problem here, but I can tell you that Old Rasputin is a damn good beer! Mmmmm... Imperial stout... Drinking the appropriate beer definitely helps out under the hood!
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