Alternator replacement help
So I'm replacing my alternator on a 1990 Comanche, and I am running into problems. I know all I have to do is disconnect the electrical connections and drop it out, but my problem is this:
I cannot remove the battery tray, the nuts are rusted bad, and it seems like I need a 15mm socket which my set conveniently does not have. 14 is too small, and 16 has too much give. I would go through the bottom, but a skid plate blocks all access to the alternator and guess what? The nuts holding the skid plate are rusted on. So I have only succeeded in loosening one of the bolts holding the alternator on, and it will go no more. I cannot access the other bolt to see if loosening both a little at a time would help. Any suggestions are much appreciated. I have some PB Blaster on the way, but I have a feeling it won't be quite enough. |
IIRC, gotta at least loosen the alternator bracket as well.
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Sawz all the bolts off that hold on skid plate then get new ones its gotta come out the bottom anyway aint nothing goes out the top any way ...
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How about a 9/16"? That's in between 14 and 15mm
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I borrowed a 15mm, along with a much sturdier wrench, and a can of PB. Ran out of light, however, so it will have to wait until sunrise to keep going. I hope I don't need to sawzall the bolts, but I could borrow one if need be.
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Buddy of mine just changed his altnernator on 00 xj 4.0 all he removed was the fan blades alt. came right out no problems.
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I removed the whole bracket for the alternator.
it isnt that hard. Also I broke off the battery tray bolts, ended up drilling a hole and using a new set of nuts and bolts to hold it down again. |
Mine comes out with a little wiggling in the top with box still there. first time I had to use a crowbar to pick engine up some. Turns out the reason for that was my motor mounts were gone. After I fixed that It came right out the next time.
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It's so easy to just drop it out the bottom why would you try the top the skid plate is easy to re place hard ware on a rusted battery box will be harder
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So I am going to try heating the nuts with a blowtorch, spraying them with cold water, then a good dose of PB Blaster. If that doesn't loosen the skid plate nuts enough, I will acquire a Sawzall or Dremel tool and just cut the b@stard off. The ten mile walk home from work is nice, but I would like to get my car running soon. Even if I have to cut the bolts, I can at least be able to use my truck to go get new ones.
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91 and down is different than 92 and up guys gotta go out bottom .
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Finished! I took off the fan, and the skid plate, and that got me all the room I needed. I had to get rid of the plate, however. The bolts on the passenger side were too corroded to remove, so I ended up breaking it off. I'll keep an eye out for somebody parting out a Cherokee, but I'm not doing any off-roading so I'm not too worried. Thanks for all the help!
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Glad it's fix did it fix the other quirks you had as well?
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No, I figured that was too much to hope for. I'm pretty sure that all the wires are just rusted. Everything else is.
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So I made a stupid mistake and apparently did not tighten my fan well enough, because when I started her up last night I heard a strange sound. Popped the hood, and noticed the bolts were loosening themselves very quickly. One fell out, even. So I left it where it was for the night so I could get my tools.
I just need to tighten the bolts more, and take car that the tension is evenly distributed between them, correct? |
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