Leaking Diffs

ben27111973 · #1 03-10-2009

anyone had any issues with leaking diffs?

I have the front leaking oil out of one of the outdrives and the rear is leaking from both outdrives.

Both diffs were about 1/3 full when I opened them up. My conclusion is that perhaps there is dirt in betweek the x-ring and the ourdrive and its causing the seal to leak.

I run on hard packed dirt and this is the second meeting the car has had.

Its concerning as it changes the diff action as the oil leaks out. There is oil all over the wishbones and the plastic outdrive covers.

If anyone has worked out how to get the outdrive gear out, I would apprectiate a procedure. They had to be tapped on so getting them off is going to be a challenge.

Ideas?

sime46 · #2 03-10-2009

One of my rears weeped a little after its first meeting. I stripped it down, cleaned it out and turned the seal around. The gears came off easily so no probs. I think they free up after some running so dont worry about taking them apart. The leaking seems to have stopped on mine. I'm racing tomorrow so we'll see I spose. Fingers crossed. If you email the team they will help you solve any problems quickly and easily.

ben27111973 · #3 03-10-2009

Quote:

Originally Posted by sime46

One of my rears weeped a little after its first meeting. I stripped it down, cleaned it out and turned the seal around. The gears came off easily so no probs. I think they free up after some running so dont worry about taking them apart. The leaking seems to have stopped on mine. I'm racing tomorrow so we'll see I spose. Fingers crossed. If you email the team they will help you solve any problems quickly and easily.

how did you get the gears off the outdrives without scoring them or ruining them?

pedro72 · #4 03-10-2009

hey Ben, i thought mine would have been a chore to get off but i just tapped the outdrive out as far as i could left it on the bench like an upturned cup to drain and the gear just fell off as for the ring gear side 2 flat screw drivers 180degrees apart and just lever the gear off, if any of that makes sense btw wot weight oil are you running?

Peter

jayst · #5 03-10-2009

mine have leaked aswell . car felt very different 2day . full strip this week

telboy · #6 03-10-2009

If the gear inside the diff is tight, get something long to put on the outdrive, and just gently tap it out. the main gear will obviously stay in the diff.
Simples

mark christopher · #7 03-10-2009

biggest thing i have found in years of using gear diffs is to lube the outdrive seal well with a good grease and settle the seal with a few tiens before fitting washer and pin.
Also over filling will creaate leaks, fill to the top of the pins where they cross, no more.

ben27111973 · #8 04-10-2009

Quote:

Originally Posted by pedro72

hey Ben, i thought mine would have been a chore to get off but i just tapped the outdrive out as far as i could left it on the bench like an upturned cup to drain and the gear just fell off as for the ring gear side 2 flat screw drivers 180degrees apart and just lever the gear off, if any of that makes sense btw wot weight oil are you running?

Peter

I have been running 20000/10000 and I run on med/high grip clay

sime46 · #9 04-10-2009

Came to strip mine tonight And the gear on the casing side won't come off. Can't get at it to lever it out. My other one dropped off. Need some kind of angled pry lever to pop it off. Not much room tho as the gear sits in a recess.

telboy · #10 04-10-2009

Si, can't you do as I mentioned?
Rest the case on something so that the outdrive is hanging, and the get something you can put onto the inner part of the outdrive, and tap it out gently?

ben27111973 · #11 04-10-2009

Quote:

Originally Posted by telboy

Si, can't you do as I mentioned?
Rest the case on something so that the outdrive is hanging, and the get something you can put onto the inner part of the outdrive, and tap it out gently?

I cant work out how you can do this given the outdrive is held in by a large c-clip?

Are you giving it a hard enough hit and destroying the c-clip also?

sime46 · #12 05-10-2009

Its as Ben says Tel, the outdrive is held by an "e" clip so you cant punch it through without risk of damage. You need to get the gear off before you can access the outdrive "e" clip. Tricky?

Adam Skelding · #13 05-10-2009

Leaking Diffs:

As has been mentioned on a couple of threads in this forum there are a number of ways to make sure your diffs stay leak free and seal correctly.

1. Lube the 'X' Ring very well before you put it into the diff housings. I normally let mine soak for a little in some thin diff oil.

2. Put a little grease or AE shock slime in the recess where the 'X' ring sits.

3. Tap the gear (#TD31001) onto the shaft using a soft 'dowel' until it is hard to turn the outdrive. Then lightly tap the hex of the outdrive using the same dowel until the outdrive just starts to move freely.

4. Fill the diff to the top of the shafts only. When you put the crown wheel side of the diff on to the case side, you should just get a little seepage through the 4 holes where the screws go. A lot of seepage and you will be 'pressurising' the diff.
This is when seepage can occur as the pressurised oil tries to get out which is either through or around the bearing. (this is the leakage you will see).

Follow the simple steps and your diff should stay leak free.

jimbo007 · #14 05-10-2009

Hi All
Have run mine 3 times 1 run on grass 1 run on astro and 1 run indoors 10000 front and 2000 rear, and have had no problems with my diffs leaking at all. Filled the diff`s as instructions and have done what adam has said above, i built them the same way as my 1/8th rallycross diffs, no leaks to date.

telboy · #15 05-10-2009

Quote:

Originally Posted by sime46

Its as Ben says Tel, the outdrive is held by an "e" clip so you cant punch it through without risk of damage. You need to get the gear off before you can access the outdrive "e" clip. Tricky?

Ah, oops, sorry, forgot about the e-clip. lol

GRIFF55 · #16 05-10-2009

did the ae slime thing on the x rings when i built mine and zero leakage so far!!! (damn thats done it now!!)

bondy · #17 05-10-2009

same here built them like I do the rallycross and truggys, plenty of grease on seal and shaft and its still ok !

ben27111973 · #18 06-10-2009

OK so all the advice sounds great - now how do we get the gear off the outdrive thats enclosed in the gearbox half?

motocross13 · #19 08-10-2009

Quote:

Originally Posted by ben27111973

OK so all the advice sounds great - now how do we get the gear off the outdrive thats enclosed in the gearbox half?

What he said, I am thinking a pick would work, but haven't tried one yet.

ben27111973 · #20 08-10-2009

come on guys - who has been game enough to try and get one out?

do we try and punch the outdrive out in one hard hit and hopefully just break the e-clip and not crack the casing?

adam - how have you got these out?