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INTERMEDIATE REDUCTION DRIVE(IRD)


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#1 buffy

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Posted 02 June 2008 - 09:30 PM

Hi Guys
Now the inportant part i have a knock when taking up drive and there is some wear on the pinion shaft which seams to much and could be the fault i an looking for ,mine is a V6 Automatic
Has any one Had to remove thr pinion housing and replaced the bearings with in it .
What problen did you have
What parts need replacing
What sort of price did you pay for spares
How easy was it to replace the bearings
On reading the manual it surgests to recored the torque settings, how do you do this and hold onto it it segests a special tool which i have not got what else can be used?
What is a collapsible spacer or is it a spacer that when fitted and collaps on final torque setting giving the pre-load on the tapered bearing

What a big problem but i am sure some one has replace it
regards
chris

#2 BogMonster

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Posted 03 June 2008 - 11:12 AM

Before you do that I would check the rear diff bushes because they wear and you get a metallic knock on the diesels as you come on and off the throttle so you may well get the same knock putting an auto in drive.
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#3 buffy

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Posted 03 June 2008 - 09:35 PM

Before you do that I would check the rear diff bushes because they wear and you get a metallic knock on the diesels as you come on and off the throttle so you may well get the same knock putting an auto in drive.

hi thanks for that but i change the frount diff mount early last month i also have checked this week all the rubber mounting bushers on all points under the car and found them OK
regards
chris

#4 buffy

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Posted 10 June 2008 - 08:52 PM

Before you do that I would check the rear diff bushes because they wear and you get a metallic knock on the diesels as you come on and off the throttle so you may well get the same knock putting an auto in drive.



hi guys
I had this IRD unit checked out at a main dealers they tod me its on its way out .Surly some one has done some work on this ,it looks like the rear out put shaft has worn bearings and need replacing and that looks easy the only thing that bugs me is the torque settings before and after replacing the bearings. Can any one help
Regards
chris

#5 WESTENDER

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Posted 11 June 2008 - 07:57 PM

Buffy
straight out of Mr Haynes book
drain plug =35 nm or 26lbf ft
filler =same
IRD support brackets 45 nm or33 lbf ft
IRD to transmission bolts 80 nm or59 lbf ft
main end case cover bolts 30 nm or 22 lbf ft
pinion housing nuts 25 nm or 18 lbf ft
pinion nut 150 nm or 111 lbf ft
propshaft to IRD flange bolts 40 nm or 30lbf ft
support bracket to IRD unit 50 nm or 37 lbf ft
i suspect the only critical setting here is the pinion nut
HTH

#6 buffy

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Posted 11 June 2008 - 09:24 PM

Buffy
straight out of Mr Haynes book
drain plug =35 nm or 26lbf ft
filler =same
IRD support brackets 45 nm or33 lbf ft
IRD to transmission bolts 80 nm or59 lbf ft
main end case cover bolts 30 nm or 22 lbf ft
pinion housing nuts 25 nm or 18 lbf ft
pinion nut 150 nm or 111 lbf ft
propshaft to IRD flange bolts 40 nm or 30lbf ft
support bracket to IRD unit 50 nm or 37 lbf ft
i suspect the only critical setting here is the pinion nut
HTH

HI Westender
Your brilliant I have only a land rover service disc and that info is not on it or I cant find it
Many thanks I try tomorrow
Regards

#7 buffy

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Posted 18 June 2008 - 09:13 PM

HI Westender
Your brilliant I have only a land rover service disc and that info is not on it or I cant find it
Many thanks I try tomorrow
Regards


Hi Westender

I just resived some of the parts i order from Land Rover to repair my IRD unit it consists of a flange ,o ring ,studs,main shaft nut,colapsal spacer,NO bearings or oil seals this cost 143.00,Land rover do not supply bearing and oil seals for this unit any more so i will have to go to BSL for these.
What does your Haynes manual say about checking the turning touque of the existing bearings and the turning torque of new bearings sepecaly if you torque up the bearings to 111 lbf.ft also what does it say on any back lash in the bevel gear on the end all should the orginal spacer be OK.
i look forward to be hearing from you
regards
chris

#8 WESTENDER

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Posted 19 June 2008 - 08:02 PM

buffy
sorry about speed of reply, work called unfortunately, according to Mr Haynes the preload must be set by a Landrover main stealer and so dosent give a value, but you can reuse the spacer, no mention of backlash at all, so not much help there then
hope some of this is helpful

#9 buffy

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Posted 20 June 2008 - 07:30 AM

buffy
sorry about speed of reply, work called unfortunately, according to Mr Haynes the preload must be set by a Landrover main stealer and so dosent give a value, but you can reuse the spacer, no mention of backlash at all, so not much help there then
hope some of this is helpful

Hi Westender
Well I got it apart the front end bearing and oil seal US rear bearing OK but will replace the lot from BSL at a cost of 30.00 the only thing they do not make the purpose made oil seal any more and have to put up with a double lipped seal but the same size. As for the end float and back lash i can only think that using the new spacer in line with the new bearings and setting the torque this provides the correct end float other wise I can see any other way unless you can see some thing I have missed
Regards
Buffy

#10 WESTENDER

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Posted 22 June 2008 - 03:36 PM

Buffy
i thought the same but didnt want to mislead you, often found that a twist on the old saying "if it looks right it is" will apply" if it feels right it is"

#11 buffy

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Posted 22 June 2008 - 06:50 PM

Buffy
i thought the same but didnt want to mislead you, often found that a twist on the old saying "if it looks right it is" will apply" if it feels right it is"

hi Westender.

Thanks for that good old BSL are unable
toget the bearings until later this week so the car is just sitting there looking sorry for it self but i let you no how i get on.
regards
Buffy

#12 buffy

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Posted 28 June 2008 - 11:09 PM

hi Westender.

Thanks for that good old BSL are unable
toget the bearings until later this week so the car is just sitting there looking sorry for it self but i let you no how i get on.
regards
Buffy

Hi Westender
Well i have replaced it its less noisy but the wine is still ,but the knock from the back lash has gone so its been worth while. As for the toque on the bearings i can see where land rover are but if you have slack bearings you cant measure it before you start.THANKYOU FOR YOURHELP
regards
Buffy




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