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[pikey]

its me again took the rear diff apart needs new lsd got them coming tommrow but the haynes manual dosent show which way round the plates go or how 2 reasemble so wos wondering if anyones got any info please or  canu do away with the lsd ?

[Mr.Stu]

Not sure what you mean about doing away with the LSD. You can't just strip the plates out and expect it to work. It would slop about liek a sloppy thing.

You can replace the carrier with a non-LSD one or replace with a non-clutch LSD such as the TrueTrac.

Have you got the tools for setting up the preload and backlash? If not you need to get someone to do it for you or you'll get bad wear on the R&P or toast the lot.

While you've got the diff out it may well be worth your while replacing the carrier and pinion bearings.

Stu.

[eastryjeep]

Which Jeep and which manual?
If you've got a XJ Cherry, only the 4.0 litre variants came with an LSD as standard. However, that said, the boys at DC sometimes had to install a limited slip rear axle destined for a 4 litre into a 2.5, to keep the production line moving when they got the stock levels wrong! As there are quite a few 2.5s about like this I would think that you could fit an open diff in place of an LSD if you had to.
If you really want to follow that road why not find out how much for a used rear axle from a 2.5 XJ, though not sure if the half shafts could handle the power if you were to spin a wheel and the tyre then grab!

The moral of the story is to take plenty of digital photos as you dismantle things, print them out and staple them into your Haynes joke book!

[JamesH]

2.5 XJ come with a Chrysler 8.25 axle with the wrong gears for a 4.0 application and are harder to find than a 4.0 Dana 35. Half shafts and whole assembly is actually much stronger than that used in 4.0 and diesels.

For non-LSD axle look in 96+ facelift 4.0 XJs

 

[chrisjones]

Post '97 4.0L XJ's come with an open diff as standard, so if you want to go with an open diff you'll need a carrier or whole axle from one of these.  Alternatively you could go for a detroit type locker or LSD since replacing the carrer involves just as much work.

I'd go with replacing the clutch plates since you've already ordered them.

[PeteS]

The 2.5l diesel facelift XJs have Dana35c axle with LSD, not sure about the pre 97s though, I don't think they did. but some pre 97 4.0l did have LSDs

[eastryjeep]

My '94 4.0 litre LTD certainly had a LSD, they are a real gamble as they give up the ghost at the drop of a hat!
The best way to keep them healthy though is to engage full time FWD and drive a few figure of eights once a week in the Tescos carpark, gets you a few funny looks but who cares, its another Jeep thing!

[Mort]

My '94 4.0 litre LTD certainly had a LSD, they are a real gamble as they give up the ghost at the drop of a hat!
The best way to keep them healthy though is to engage full time FWD and drive a few figure of eights once a week in the Tescos carpark, gets you a few funny looks but who cares, its another Jeep thing!

What's the theory behind that then, and why not just leave it in Full-Time FWD all the time?  

[Anonymous]

Why would putting it in 4wd do anything extra for the rear diff?

Figure 8s for distributing the fluid round the diff if it's not been offroad for ages, yep, makes sense. Saying that, I'd have thought most roundabouts would do this during normal driving.

Much more fun way is:

Leave in 2wd.
Find a grass verge.
put two wheels on the verge.

FLOOR IT

all on private land of course

EE

[pikey]

thanks 4 the info its a 4ltr 1993 cheokee i got it all back 2gether took me 3 hours getting the shims in wos the worst bit dont understand about the preload ? seems 2 go alright with no wierd noises ,only did 5 mile though . the diff wos just warm .

[isle of man]

thanks 4 the info its a 4ltr 1993 cheokee i got it all back 2gether took me 3 hours getting the shims in wos the worst bit dont understand about the preload ? seems 2 go alright with no wierd noises ,only did 5 mile though . the diff wos just warm .

warm is acceptable.......pikey you did put the lsd additive in???


peter henry

[pikey]

er wots the additive ,i put some additives in my mondeo diesel tank  

[isle of man]

er wots the additive ,i put some additives in my mondeo diesel tank  

yes but this is not red.............
will get you the part# wait wile i find it or dr mike will supply it.

peter henry

[tim_aka_tim]

Go to the Jeep dealer and say "I'd like some friction modifier for my limited slip differential". He will give you a small bottle and relieve you of about a fiver. Put in the specified amount (a 5% mix if I remember right)Go do it.....now!

[Mike Pavelin]

The diff carrier bearings are preloaded by adding shims that are thick enough that the diff cannot be installed easily without stretching the diff housing to a maximum of 0.5mm with a special tool. This means that with the diff installed and the tool removed, the elasticity of the diff housing squeezes on the carrier bearings giving the required preload. If you can slip the diff, bearings and shim assembly into the housing with no resistance the carrier bearings are worn and the preload has been lost.

[isle of man]

Go to the Jeep dealer and say "I'd like some friction modifier for my limited slip differential". He will give you a small bottle and relieve you of about a fiver. Put in the specified amount (a 5% mix if I remember right)Go do it.....now!

yes and it looks like this both ways around........



peter henry

[pikey]

mine did have shimes each end of the carrier had 2 force them in with a wooden malet worked a treat . ill go to rydales tommrow and get some additive thanks

[Mike Pavelin]

Should be ok if it was a tight fit.

[tim_aka_tim]

mine did have shimes each end of the carrier had 2 force them in with a wooden malet worked a treat . ill go to rydales tommrow and get some additive thanks

Here's a most useful guide, provided by the good doctor, should you want to know how much oil is in your diff so you can add the required 2-5%.

[pikey]

thank u all 4 info most help full got the additive 4.86 all in

[isle of man]

thank u all 4 info most help full got the additive 4.86 all in

great............now would be a good time to go to the introductions part of the board and tell us about you and your cherokee.


peter henry

[pikey]

well put the additive in and took it for a run {35 miles} when got back i grabed the diff she wos hot so took the plug out to smell the oil stinks again .i think its another axle so got to look for another cheap 1 . wanted it done 4 next weekend wos going to go to the cheapfest its only 20 mile from me oh well ....

[Anonymous]

ermm..........who might have one or 2 of them lying around??

[pikey]

ok ill hang on thanks

[eastryjeep]

Even new gear oil often smells ripe, so don't panic quite yet.
When you consider the fact that you have a pre-loaded frition clutch in an LSD it's bound to heat up whenever the plates are moving relative to one another, the question is rather, "Is it outside manufacturers' acceptable limits".
Don't forget that all the heat generated within the diff is conducted away via the oil to the diff housing which in turn is mostly cooled by convection.
Why not phone the boys at Lighthouse Jeep (01953 681237) and ask them for a rule of thumb guide as to what is acceptable. Maybe even stick a cooking thermometer in the filler hole and get a reading of the oil temp and then check the max operating temp for the oil on the net, or just 'phone the technical sales department of an oil manufacturer, they know what their own as well as their competitions' products can do.