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Diff studs>>> help needed
Posted: Tue Apr 26, 2005 9:54 pm
by eliteforce32
how do u take out or do i just drill and retap tap a broken stud on the diff housing for the diff center? i can tap etc but is it best get someone to do it?
Posted: Tue Apr 26, 2005 10:07 pm
by Ingenious-Eng
Not much info to go on???
But if it's a stud (has a nut screw onto it) you use a drift punch to gently knock it back inside the housing (with the diff centre removed of course) then pull a new stud through with a new nut & some flat washers between used as spacers.
Cheers
Posted: Tue Apr 26, 2005 10:10 pm
by eliteforce32
would u have a drift punch? or where can i get one?
Posted: Tue Apr 26, 2005 10:11 pm
by ausyota
You might be able to get it out with an EZ out (screw extractor).
You have to be really carefull though because if you snap an ezyout off you will in all sorts of trouble because they are hardened they hard to get out
Paul.
Posted: Tue Apr 26, 2005 10:16 pm
by toughnut
Yeah. Easy out would be the go. You drill the stud and the easy out screws the opposite direction and bites into the stud and unscrews it. They look like a tapping tool for tapping threads. If you stuff it up then just drill it out and use halicoils(spelling). You drill the hole just oversize, tap the hole and then just screw the halicoil into the hole. They look like a small coil spring and are way stronger than the original hole. Performance engine builders sometimes use these on engines to strengthen bearing caps on crank rods and stuff.

Posted: Tue Apr 26, 2005 10:19 pm
by eliteforce32
thanks guys, just hit something rather hard this arvo in the lux, leakin oil real bad, went to have a look and no nuts on the very bottom and one to the left of the diff

thank christ it wasn't something else
Posted: Tue Apr 26, 2005 10:24 pm
by Ingenious-Eng
Some diff housings use studs similer to wheel studs that pull in from behind and others have tapped threads into the housing in which studs are screwed into???
Method of repair is totally different for either!!!!
Also helps heaps to look before asking? (good to hear problem solved)
Cheers
Posted: Wed Apr 27, 2005 9:50 am
by 80UTE
Being a hilux there screw in studs, pull the diff centre out and if there's some stud sticking belt a nut over it weld the nut to whats left of the stud and unscrew it. If is broken off flush i would say you will need to drill and retap as the studs are a tight fit in the housing (tread is oversize so as to lock into housing and seal) and you have a good chance of the ezyout breaking then you have that to deal with.
Wally