Author Topic: Gearbox leaky leaky.  (Read 6170 times)

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Offline Pure_Sincerity

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Gearbox leaky leaky.
« on: May 8, 2012, 04:45PM »
Hey guys, replaced driveshaft seals and the gearbox still leaks from the passengers side of the car. Where could the leak be coming from seeing as the driveshaft seals are brand new ?
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Offline Budgie

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Re: Gearbox leaky leaky.
« Reply #1 on: May 8, 2012, 07:04PM »
reverse sender
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Offline Pure_Sincerity

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Re: Gearbox leaky leaky.
« Reply #2 on: May 9, 2012, 10:47AM »
Looking from under the front of the car, it leaks from the middle of the bell housing, trace the leaks to the back of the gearbox, kranz suggested the main seal on the back of the box, but I think it may once again be coming from the seal I just replaced 2 days ago.
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Offline Budgie

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Re: Gearbox leaky leaky.
« Reply #3 on: May 9, 2012, 01:08PM »
So, if its the driveshaft seal again, then something else is wrong.

Either your shaft is dodgy (ha!) or something inside the box is not allowing the shafts splines to sit and line-up correctly.
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Offline Pure_Sincerity

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Re: Gearbox leaky leaky.
« Reply #4 on: May 9, 2012, 06:14PM »
Well I suppose the shaft will be easier than the seal. Well I had just drove 100+Kms to caloundra from Brisbane, with no problems. Just have to fill up my box so it doesn't fuck out. What should I look for when I pull the shaft out again ?
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Offline Pure_Sincerity

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Re: Gearbox leaky leaky.
« Reply #5 on: May 9, 2012, 09:59PM »
Being LSD, if my left driveshaft is fuxked for example, is that the one that's interchangible with all KA's and Ca's ? Or is that the right ?
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Offline Budgie

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Re: Gearbox leaky leaky.
« Reply #6 on: May 9, 2012, 10:04PM »
No, its the passenger side that has the longer spline
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Offline Vithy

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Re: Gearbox leaky leaky.
« Reply #7 on: May 10, 2012, 04:13AM »
i had a gearbox that was so fucked internally that it leaked ALL the time. I got a new drive shaft seal installed but al that did is slow it down a touch, one drive = empty gearbox. hope yours wasnt this bad lol

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Offline Pure_Sincerity

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Re: Gearbox leaky leaky.
« Reply #8 on: May 10, 2012, 09:16AM »
i had a gearbox that was so fucked internally that it leaked ALL the time. I got a new drive shaft seal installed but al that did is slow it down a touch, one drive = empty gearbox. hope yours wasnt this bad lol



Mines only been like this since we had done the clutch. I cleaned it all up yesterday and sat the car on idle for 15+ minutes and no leak, but go for a drive, come back and it drips. But I'm confused of the last reply about shifts, can I use a passenger KA driveshaft from say a corsair ?
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Offline noss

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Re: Re: Re: Gearbox leaky leaky.
« Reply #9 on: May 10, 2012, 09:22AM »
No, its the passenger side that has the longer spline

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Offline Pure_Sincerity

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Re: Gearbox leaky leaky.
« Reply #10 on: May 10, 2012, 09:33AM »
Lol, duh, what am I doing ? Fuck, will be harder to find a shaft now.
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Offline Colby

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Re: Gearbox leaky leaky.
« Reply #11 on: May 10, 2012, 09:53AM »
Lol, duh, what am I doing ? Fuck, will be harder to find a shaft now.
Pretty sure I've got one... it looks really nice sitting in my garage in a massive box of other random spares.

Offline noss

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Re: Gearbox leaky leaky.
« Reply #13 on: May 10, 2012, 01:56PM »
Now for the N0ooOBb question, is the cv the end of the shaft that goes into the box ? In which I can replace ?
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Offline JAWSTRX!

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Re: Gearbox leaky leaky.
« Reply #14 on: May 10, 2012, 02:18PM »
Now for the N0ooOBb question, is the cv the end of the shaft that goes into the box ? In which I can replace ?
Nah man its the other end, the one that goes into the hub.
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Offline Colby

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Re: Gearbox leaky leaky.
« Reply #15 on: May 10, 2012, 02:32PM »
well technically both ends have CV joints, but the outer one is where most of the issues usually occur.

Offline Pure_Sincerity

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Re: Gearbox leaky leaky.
« Reply #16 on: May 10, 2012, 02:36PM »
Well, in that case it's got nothing to do with it, it's coming from the seal, so it's obviously not sitting in right even though car is still drivable, only been leaking since the clutch was done and new seals were put in twice, so it's obviously a human error somewhere I guess,
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Offline noss

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Re: Re: Gearbox leaky leaky.
« Reply #17 on: May 10, 2012, 06:51PM »
Out of curiosity, did you get the correct seal? I mean did you compare old and new before install?

I had trouble previously got the seal from repco and then supercheap, both were wrong, they insisted it was the correct part number from their book so must be right. Ended up getting the correct one from some small independent.



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Offline Pure_Sincerity

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Re: Gearbox leaky leaky.
« Reply #18 on: May 10, 2012, 07:19PM »
Yeah dude, matched up both seals that went in. They are the correct ones, I spose I'd just pull it out tomorrow and have a look, than ram it back in :p
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Offline SleepaTi

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Re: Gearbox leaky leaky.
« Reply #19 on: May 10, 2012, 07:31PM »
did you coat the outer lip of the seal with sealer before you fitted them?


correct part numbers: 51E00 is the LH LSD seal, 81X01 is the RH seal. non LSD uses 81X01 on both sides.

NO! it's NOT a fucking SR20!!

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Re: Gearbox leaky leaky.
« Reply #20 on: May 10, 2012, 07:37PM »
Cheers mate, I have the right seal.

did you coat the outer lip of the seal with sealer before you fitted them?


correct part numbers: 51E00 is the LH LSD seal, 81X01 is the RH seal. non LSD uses 81X01 on both sides.



And no, am I suppose to use a sealant around it ? I have high temp silicone I spose I could use.
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Offline SleepaTi

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Re: Gearbox leaky leaky.
« Reply #21 on: May 10, 2012, 07:39PM »
any gasket sealer is fine
NO! it's NOT a fucking SR20!!

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Re: Gearbox leaky leaky.
« Reply #22 on: May 10, 2012, 07:43PM »
Shouldn't need to use a sealant since the seal is a light interference fit, can't hurt to use a little anyways for extra insurance.

Offline Pure_Sincerity

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Re: Gearbox leaky leaky.
« Reply #23 on: May 10, 2012, 08:04PM »
The seal is tight, but I'll jack it up, remove the wheel, clean it up and seal the outer edge before I head home. Than if I get home and there is leaks there, than I'm fucked yo,
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Offline SleepaTi

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Re: Gearbox leaky leaky.
« Reply #24 on: May 10, 2012, 08:07PM »
i went through $80 worth of seals thinking it was them but it turned out (reading the service manual) it was recommended to use sealer on them.

now it's drip free 20,000km on ;)
NO! it's NOT a fucking SR20!!

Offline Budgie

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Re: Gearbox leaky leaky.
« Reply #25 on: May 10, 2012, 09:57PM »
I also used sealer on mine on the old grey TRX, my bluebird and my U13. Never had a leak or drip (quote that shit noss :P)
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Re: Gearbox leaky leaky.
« Reply #26 on: May 11, 2012, 10:13AM »
i went through $80 worth of seals thinking it was them but it turned out (reading the service manual) it was recommended to use sealer on them.

now it's drip free 20,000km on ;)

It's actually really good news that you had the same problem and fixed it with sealant. Hopefully that's my problem too.
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Offline Pure_Sincerity

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Re: Gearbox leaky leaky.
« Reply #27 on: May 11, 2012, 06:52PM »
still leaks :/
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Re: Gearbox leaky leaky.
« Reply #28 on: May 12, 2012, 01:42PM »
forget the last post,

It still leaks, but i had just pulled everything out, driveshaft seems fine and i sealed the seal with a thick layer of high temp silicone. heres a pic. is this how you guys did it ? budge/sleepa ?

Let me know what else i could look at.

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Offline Pure_Sincerity

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Re: Gearbox leaky leaky.
« Reply #29 on: Jun 4, 2012, 07:43PM »
Gearbox still leaks, just have been topping it up once every 3 weeks so the leak isn't that bad, even though I shouldn't be buying oil once every few weeks.

It is deff coming from the LHD LSD seal where it's supposed to fit snug around the shaft. Should I just get yet another new seal and also a LHD LSD shaft ?
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Offline Pure_Sincerity

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Re: Gearbox leaky leaky.
« Reply #30 on: Jun 8, 2012, 07:10PM »
Redone the shaft today with another one I had acquired and gues what ? It still fucking leaks, and to make it worse, this one had a fucked cv joint in it  >:( WHAT THE FUCK ?

Input is deff needed guys. Cheers.
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Offline Pure_Sincerity

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Re: Gearbox leaky leaky.
« Reply #31 on: Jun 8, 2012, 09:39PM »
""The LHS seal usually leak because the diff bearings on that side wear, due to the gearbox oil not being changed regularly, and particles getting into the roller bearings. To check, see if you can move the drive shaft laterally, (up and down) adjacent the seal. If you can, no seal replacement will fix the oil leak. The bearings are under preload, and there should be no side movement. If there is movement, it's a strip down of the gearbox and diff.""

Possibly my problem ?
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Offline Budgie

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Re: Gearbox leaky leaky.
« Reply #32 on: Jun 9, 2012, 12:04AM »
Sounds right, does it move up and down? It should sit rock solid
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Re: Gearbox leaky leaky.
« Reply #33 on: Jun 10, 2012, 02:50PM »
I had the same issue in a U13 a few years ago, and it was stuffed diff bearings (exactly that scenario).

Sadly the best seal in the world won't fix it. See if you've got movement in the drive shaft, if so, it's new gearbox time.

Offline Pure_Sincerity

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Re: Gearbox leaky leaky.
« Reply #34 on: Jun 10, 2012, 07:29PM »
Sadly to say, it is new box time, driveshaft moves up and down about Half a cm...
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Offline noss

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Re: Gearbox leaky leaky.
« Reply #35 on: Jun 13, 2012, 12:48PM »
i would say so yes. is the seal definitely for the lsd shafts? aren't the lsd shafts slightly thicker?

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Re: Gearbox leaky leaky.
« Reply #36 on: Jun 13, 2012, 12:57PM »
i would say so yes. is the seal definitely for the lsd shafts? aren't the lsd shafts slightly thicker?

Yes father. The LSD seals are like twice the size in diameter. I've sourced another box I may pick up tomorrow.
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