tektic
(Senior Member)
11/13/15 08:00 PM
why my rebuilt alternator failed

Opened it up.


I soldered it back together and will bring it to have it tested tomorrow. All the diodes measured good brushes wer good bearings were good. Could that have really been all that it was?

This is the one that was draining my battery. I haven't taken The one out that failed on me yesterday. I hate replacing alternators in this car. I have to pull the headlight to get to the intercooler couplers and the power steering pump... Bullox.


EHmotorsports
(Capt Fabbin Stabbin)
11/13/15 10:46 PM
Re: why my rebuilt alternator failed

What is "it"?

tektic
(Senior Member)
11/14/15 05:05 PM
Re: why my rebuilt alternator failed

That's the positive leg for the charge cable. The solder completely broke free and it was just banging around when I opened it.

tektic
(Senior Member)
11/22/15 11:43 AM
Re: why my rebuilt alternator failed

So I had repaired the alternator above and had it checked at auto zone. It passed their tests. I pulled the alternator out of the Galant and dissected it to find the point of failure. to my surprise it was the same issue.



Also the screw in the top of this image backed itself out, and there was scratches and some fan contact inside the case.

Before I found this alternator died the same death I planed on putting the first one back in. Now I'm thinking there's an underlying issue. A friend from work Said it could be "chasing ground." I have a 6awg strap connecting the alt case to the chassis. I would think that would be enough ground or I just don't understand his prognosis. Please advise.


tektic
(Senior Member)
11/23/15 07:20 AM
Re: why my rebuilt alternator failed

I don't know if this is the best Idea... but under advisement from a friend I welded the metal terminal back together on the second failed alternator. If there's still a voltage drop somewhere in the charging line I think I'm just going to melt something else in the system.


This stuff was so light I burned right through it on the lowest setting. Looks like ass but there should be enough metal there certainly more than when I started. I'm going to clean it and fill in any gaps with solder.


thomcasey
(I ain't no puny human)
11/23/15 09:17 AM
Re: why my rebuilt alternator failed

Mitsu alternators like to pull air from the rear of it for cooling. That failure is common, especially when runing an exhaust without heat wrap/original heat shields. It sucks in the heat from the exhaust and melts the connection there to the regulator. I get good life out of mine by wrapping the downpipe so it isn't sucking in the hot air

tektic
(Senior Member)
11/23/15 09:34 AM
Re: why my rebuilt alternator failed

So this is strictly heat related. Ok thanks.


Contact Us | Privacy statement GalantVR-4.org

Generated in 0.004 seconds in which 0.003 seconds were spent on a total of 4 queries. Turbo powered.


Hertz's Galant VR-4 Page