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Rear Oil Leak.

Tech Talk for Cruiser owners.

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CAD
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Rear Oil Leak.

Post by CAD »

Hi guys,
After leaking for a little while I decide to investigate... I see this... seems like I'm losing a bit of oil but I'm not sure exactly where it is coming from, Sometimes it smells because it looks like it gets on the muffler... There is no oil towards to front of the car... just this above the rear diff. Heres some pics... tell me what you think.. thanks!

Image

Image

Btw... Its a 93 HZJ75 PC :)
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Post by chunks »

A little bit! :lol:

Looks like your diff pinion seal is leaking mate! :cool:
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Post by CAD »

chunks wrote:A little bit! :lol:

Looks like your diff pinion seal is leaking mate! :cool:
Diff pinion seal? Is it a big job?
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Post by chunks »

Not really but there is a little bit of a knack to it, a diff shop shouldn't charge much at all to whack a new one in. I would be checking your diff oil level its probably getting a bit low now, also check the diff breather isn't blocked.
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Post by Man of Cheese »

not really 1/2 hour with the right tools, you may also need a speedy sleave for the pinion depending how badly worn it is. :) :)
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Post by Troopy93 »

If the pinion spacer has collapsed and the flange is loose you may be up for those as well. Also check the spline for wear.
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Post by CAD »

Spoke to a diff guy today and hes trying to sell me a whole new diff center.

He says 9 times outa 10 the bearings are shagged, plus the clutch and for an extra bit of $ he'll just supply me with a whole rebuilt unit fitted... $990 :shock:
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Post by Man of Cheese »

at that price i would fork out the extra for a locker.
is the diff noisy at any speed sounding like a whinning noise
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Post by CAD »

Man of Cheese wrote:at that price i would fork out the extra for a locker.
is the diff noisy at any speed sounding like a whinning noise
I think it is yes.
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Post by CAD »

Ok.... I got under the car and pulled on the driveshaft to check for wear to the bearings, I have no up and down or side to side movement but there is a little bit of slop on the shaft if I turn it, Is that normal and does it sound like I can get away with just a new seal etc?
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Post by Man of Cheese »

well a seal will cost about $5 not hard to replace if you have a manual read that pretty simple remove shaft, undo nut, tap out seal carefully, knock in new one, put nut on, replace shaft, change oil.


cheap way to start did you say it was noisy at speed if so your bearings are rooted
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Post by CAD »

Man of Cheese wrote:

cheap way to start did you say it was noisy at speed if so your bearings are rooted
There is no play in the shaft, But the whole driveline is kinda noisy, This is my first Landcruiser so Im not sure if thats how its spose to sound :)
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Post by simkell »

cost of seal $5.00 plus labor. not hard to do if you know what you are doing.
buy a manual the best investment for any home mechanic and give it a go. movement in a propshaft is normal ie backlash, but movement in uj's is not a good thing and neither is movement in diff pinion bearings. for around 1600 you could have a air locker put in as well with all new bearings and seals. oh plus compressor.
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Post by Man of Cheese »

simkell
you have basically said what i already have

wogboy
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Post by Sic Lux »

With doing the pinion nut back up only do it up as far as it was when it came off otherwise you may give it to much preload on the pinion bearings and then they will be shaged
plenty of parts on the bench
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Post by CAD »

Strangely enough.... The diff had plenty of oil in it.... so where the hell is the oil coming from?! :shock: :lol:
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Post by bludger »

is it diff oil or engine oil. diff oil has got a certain smell but if it engine oil i rekon its your rear main seal in your engine
turbo 60 series,soon to be locked
go the 40

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Post by simkell »

clean the area first and go for a drive to see if it is your diff pinion, but by the looks of it i reckon it is.
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Post by simkell »

Man of Cheese wrote:simkell
you have basically said what i already have

wogboy
keep going and i will send someone around to give you advice :lol: :lol: :lol:
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Post by CAD »

bludger wrote:is it diff oil or engine oil. diff oil has got a certain smell but if it engine oil i rekon its your rear main seal in your engine
There isnt any oil towards the front of the vehicle though :(
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Post by bludger »

when your driving it all heads to the back of the car i've got the same problem with my 40 i have to pull the gearbox to fix it are you using any oil
turbo 60 series,soon to be locked
go the 40

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