help! getting gearbox and driveshaft problem

martin · backyard mechanic Joined: 04 Oct 2001 Posts: 900

Managed to get the diff out of my twincam the other day (man that things weighs a ton!) and now im ready to get the rest of the drivetrain out

i'm a bit confused as to how i disconnect the driveshaft from the gearbox. I can see where the rear mounts for the g/b are but i can't see any bolts that look like they hld the drive shaft and rear of the box together...

the books and on here says "rear yolk" and "12mm" bolts

if someone could explain what i should be unbolting and where they are it'd be a big help

cheers

martin · backyard mechanic Joined: 04 Oct 2001 Posts: 900

is it those two little bolts at the top rear of the box? how do they hold the driveshaft in?

Gene FJ20DET

4x12mm bolts at the rear of the tail shaft joining it to the torque tube. and there are no bolts holding it to the gearbox, it will just slide out, DONT LOSE THE SPRING!
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Reddez · tinkerer Joined: 29 Oct 2002 Posts: 353

Remember to mark the tailshaft and where it mounts so that you can put it back together the same way.

Gene FJ20DET

what do u have to mark?? it can only go in one way?
iv dont it heaps and never marked anything??
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Wagonslut · tinkerer Joined: 11 Apr 2002 Posts: 376

i think he meant the tailshaft from the torque tube, if u bolt it up different to wat it was, it may but not neccesarily always put out the balance.

Reddez · tinkerer Joined: 29 Oct 2002 Posts: 353

Yup thats why i was always told to do that, im sure there may be more reasons though, its mentioned in workshop manuals also...

DOHC_TF · tinkerer Joined: 11 Feb 2003 Posts: 123

It's factory balanced in that position so if you put in a different position it could upset the balance.

cheers

Reddez · tinkerer Joined: 29 Oct 2002 Posts: 353

Thanks for that, i knew there was a reason properly, but i could just remember always doin it that way...

martin · backyard mechanic Joined: 04 Oct 2001 Posts: 900

cheers guys
it was a bit of a mission getting the driveshaft out of the diff but it came out eventuall

fark that thing weighs a ton! maybe its the dirty big discs and calipers on it but geezus

Gene FJ20DET

not that heavy??
my disks didnt make it weigh anymore?

well the whole marking thing sounds right lol. iv never done it. probly explain the vibrating at 110km/h LOL
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Reddez · tinkerer Joined: 29 Oct 2002 Posts: 353

If its vibrating have ya also realligned the diff/torque tube after lowering it??? Just a few shims or washers on the mount at the front of the torque tube should do the job, i think whiteline sells a kit full of the washers, but a fasteners joint would have em anyways... Also the vibrating will wear out ya bushes and shit quicker won't it???