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draven
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Epping, Sydney
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May 2002
 
my diff is leaking oil Sun, 05 January 2003 07:18 Go to next message
I just noticed today there's a small pool of oil where my diff is apparently dripping. it's not an alarmingly large pool of oil, but it's big enough to make me want to fix it soon.
I'm assuming all it needs is a new seal ... how difficult is this to replace, and what sort of oil would you recommend (bearing in mind it's an ma61 diff being driven by a 1jz)
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clubagreenie
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duplicate Mon, 06 January 2003 04:50 Go to previous messageGo to next message
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[Updated on: Mon, 06 January 2003 04:52]

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clubagreenie
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Re: my diff is leaking oil Mon, 06 January 2003 04:51 Go to previous messageGo to next message
First remove tail shaft, then with handbrake on or car still on ground remove large nut on diff flange (where the tshaft bolts to). remove the axles then the diff centre. With the diff in a vice remove the carrier then slide out the pinion gear. You may need to remove the bearing carrier to get to the seal but I'd probably replace the bearings anyway, both pinion and carrier. Just make sure to keep and replace any shims behind the pinion bearing carriers as these adjust your end float and preload. Replace seal and bearings etc. Don't forget to refill oil.
PS also dont forget to seal the center to the housing

[Updated on: Mon, 06 January 2003 04:53]

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GEEZE23
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Western Sydney
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July 2002
Re: my diff is leaking oil Mon, 06 January 2003 09:41 Go to previous messageGo to next message
Draven,
DONT PULL THE CENTRE APART!!!.
Where is it leaking? MA61 is IRS so it can be 4 spots:
- front flange seal
- rear "hat" gasket
- or one of the side CV flange seals
- filler or drain plugs

First check that the diff breather is blocked, then look at a car manual for changing. You dont need to pull the diff centre out of the car- and don't need to pull the diff apart to change them. I have the manual you can photocopy pics if u want.

.oO Dave Oo.

[Updated on: Mon, 06 January 2003 09:46]

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draven
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Re: my diff is leaking oil Mon, 06 January 2003 12:43 Go to previous messageGo to next message
thanks dave... I do have the manul, but didn't have it readily available when i posted.

I have a feeling it's the rear gasket, but I'm going to give it a good clean tomorrow and find out for sure where it's coming from
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SUPRAGTE
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Re: my diff is leaking oil Tue, 07 January 2003 09:11 Go to previous messageGo to next message
Clubagreenie is correct, we just replaced the bearings and crushable spacer on Ray's. Fixed the noise and the leak! Will be doing mine after dyno day.
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draven
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Re: my diff is leaking oil Tue, 07 January 2003 09:43 Go to previous messageGo to next message
mind if I drag mine along as well, and just copy what you guys do?
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GEEZE23
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Location:
Western Sydney
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July 2002
Re: my diff is leaking oil Fri, 17 January 2003 07:22 Go to previous messageGo to next message
Would you rebuild a motor if the sump was leaking?
I assumed that your diff was in good working order, just leaking. In the case of it just leaking- you DO NOT need to pull any pinion or differential centre out! I only rebuild diffs and change seals daily. Sorry, just trying to save Draven some unnecessary time and time.
Good Luck

.oO Dave Oo.
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draven
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Re: my diff is leaking oil Fri, 17 January 2003 07:25 Go to previous messageGo to next message
much appreciated

the diff itself works fantastically.. no noises or rattles from it at all... perfect.
the only problem is the oil leaking seal
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SUPRAGTE
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Re: my diff is leaking oil Sun, 19 January 2003 05:41 Go to previous messageGo to next message
Geeze23, you have to understand how the MA61(F series) diffs work and you'll understand.

The crushable spacer that you torque up when you put the new seal and spacer in is designed to crush down to the perfect clearance size.

After time the crushable spacer reduces further and if you just put a new seal in it will wear out in a thousand kays and oil will leak past again.
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Classique71
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Location:
Colac, Victoria
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May 2002
Re: my diff is leaking oil Sun, 19 January 2003 09:32 Go to previous message
dads diff in his ma61 is going the same way -whats the usual $$ amount to reseal the diffs ?

i dont think he could do it himself - and i know i havent got the mechanical nouse to do it but we know a great mechanic here that could
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