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Post by geeves on Apr 14, 2009 20:39:49 GMT 11
Blew another rear u joint on the weekend (4 in 12 years) One bearing cup was no longer there giving a nice bumpy ride. Being Easter Saturday had to pay top dollar at ripco but such is life. I got a very good deal getting it fitted at the Mobil in Foxton though which made up for it so they get a highly recommended prize.
Anyway when he took the old joint apart he found the yoke was bent about 2mm which he straightened and recommended replacing asap.
The question is how did I bend it and has anyone else managed to bend one of these? There was a little burring on the inside of the yoke as well but not enough to worry about.
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Post by mulover on Apr 15, 2009 14:01:29 GMT 11
Possibly landed on the crest of a bank one day???
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Post by geeves on Apr 15, 2009 17:55:37 GMT 11
Think in terms of 2 steel bars 10mm by 12mm roughly and 40mm long. The damage if caused by external force must of happened instantly as only one yoke lug was bent and no external marks. What force is required to bend a piece of steel that size with only that length as leverage.
I cant get my head round this but surely a whack of that size would also break the diff
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Post by mulover on Apr 16, 2009 11:13:31 GMT 11
Force - probably about 1 of a tonne in a break press!! Sounds like it might be another great un-solved automotive mistery
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Post by Harry on Apr 16, 2009 19:42:20 GMT 11
By yoke do you mean the parts with the holes in that the cross fits into.If so then I'd say someone has used a press to change the cross at some stage.Might explain why you've gone through so many universals.Hope you're not looking for another driveshaft.I picked up a lwb wreck from Stokes Valley yesterday.
Regards,Harry.
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Post by geeves on Apr 16, 2009 21:13:32 GMT 11
Mechanic said that without straightening it it the circlip wouldnt go on. I will be looking for a driveshaft as I dont trust the yoke. Lucily this section is common to all the isuzus although a bighorn shaft is less work
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Post by mulover on Apr 17, 2009 11:11:21 GMT 11
You could be spot on there Harry, using a press would generate enough pressure if a cup didn't want to move, and 4 universals in 12 years does seem alot, I don't do much driving, but i've had my mu for 7 years and haven't replaced one yet.
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Post by geeves on Apr 17, 2009 14:25:19 GMT 11
The mu has a longer one piece driveshaft than the lwb bighorn. The bighorns moveing section is only about 900 long so works over bigger angles
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Post by mulover on Apr 18, 2009 11:16:57 GMT 11
True, but 4 in 12 years still seems alot??
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Post by geeves on Apr 18, 2009 19:01:14 GMT 11
Ive heard stories before about bighorns being hard on ujoints but its never come up here. Looking at the spare I picked up today there isnt a huge angle they can work through so maybe Im over extending it. Maybe its a case of Mus break CV joints but Bighorns break U joints. Ive never broken a CV despite trying very hard.
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Post by isuzumudman on Apr 19, 2009 6:12:49 GMT 11
Sorry, my tally is 2 cv's in the last 2 years and 3 universals in the last 5. '95 lwb Bighorn.
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Post by geeves on Apr 19, 2009 7:54:40 GMT 11
The 95 bighorn has the longer CV thats harder to break. How high have you lifted. You might have to do a diff drop or something
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Post by mulover on Apr 19, 2009 10:39:53 GMT 11
I can relate to that!!!!! i broke more than my share of cv's before i dropped my diff. I only really started having problems after i cut my bump stops though!!!!!, plus the 6mm spacer didn't help much i suppose!!! Sounds like you might not be trying hard enough geeves!! lol.
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Post by isuzumudman on Apr 19, 2009 12:26:47 GMT 11
Oops! Forgot to mention that front locker thing. The best thing I ever fitted but hard on cv's.
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