Tailshaft pinion flanges.
Submitted: Thursday, Feb 11, 2010 at 11:49
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75948
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Member - Christopher P (NSW)
I need some help with a wee problem. My rear tail shaft doesn't fit due to the diff flange being bigger. Same when i put in this 5spd box. What i would like to know is, If i put the tailshafts (front and rear) up to the transfer case, can i move theuni joint pinions 90 degress to the present holes and re-drill holes???
The uni joints fit in the ring and groove so centralising it should be a snap. Also i have a spare transfer case in shed that i could remove the uni joint pinions from, just reluctant to make more work, not that i am lazy, just practical.
Any help or advice would be apprieciated.
Thank you
Reply By: Member - Scoot (SA) - Thursday, Feb 11, 2010 at 12:28
Thursday, Feb 11, 2010 at 12:28
I would of thought it would be quicker and easier to change the uni's and flanges than drill new holes.
But if you want to remove all the flanges and drill them as long as you are spot on with your messurements should be OK.
Cheers Scoot. :-)
AnswerID:
403760
Reply By: MrBitchi (QLD) - Thursday, Feb 11, 2010 at 12:55
Thursday, Feb 11, 2010 at 12:55
Any minute error in measurement for drilling would result in a tailshaft vibration cause it's out of balance. Changing the pinions would be a better option IMO.
AnswerID:
403764
Follow Up By: Member - Christopher P (NSW) - Thursday, Feb 11, 2010 at 23:05
Thursday, Feb 11, 2010 at 23:05
I plan to use the correct sized drill bit and use the one that i want to use the holes for as a guide for squared off drilling.
Step one: Mark where i want the holes using a square
Step two: fit tail shaft into position and align holes
step three: Drill into flange to mark
step four: remove tailshaft and drill pilot hole
Step five: Refit tailshaft, clamp and complete drilling to required size.
Can anyine for see any problems????
FollowupID:
673444
Reply By: Member - Christopher P (NSW) - Thursday, Feb 11, 2010 at 20:53
Thursday, Feb 11, 2010 at 20:53
Thanks for the advice. Will change the uni pinions over and i hope they fit.
AnswerID:
403808
Reply By: Geoff (Newcastle, NSW) - Thursday, Feb 11, 2010 at 22:40
Thursday, Feb 11, 2010 at 22:40
Christopher,
I can't see why you couldn't do some drilling!
The definition of a flange allows for controlled alignment without the bolts, see the attached image.
All you need to do is clamp the flange faces together and mark out the new locations for the holes.
Once the marking out is accurate, make sure the holes are drilled square and only just as big as they need to be.
After that everything should be good!
Geoff
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Follow Up By: Member - Christopher P (NSW) - Thursday, Feb 11, 2010 at 23:00
Thursday, Feb 11, 2010 at 23:00
Hi Geoff, that was what i was planning to do, turn tail shaft 90 degress, clamp and drill one hole and put bolt in and tighten whilst clamped, drill and bolt till i have 4 holes done.
I don't have a tension wrench and only just might be able to get one to do the pinion flange bolts up to spec. so as my Dad say's KISS.
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