Leaking Diffs

[ben27111973]

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]

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]

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]

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]

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

[telboy]

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]

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]

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]

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]

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]

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]

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]

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.
:thumbsup:

[jimbo007]

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.:thumbsup:

[telboy]

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]

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

[bondy]

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

[ben27111973]

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

[motocross13]

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]

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?

[Adam Skelding]

They're real easy to get out.
Tap the outdrive till it hits the 'e' clip.

Then tap the diff case against a flat surface i.e. table...

This is how I get mine out... I've only done it once as I forgot to put a 'seal' in my diff.

#oops#

[ben27111973]

They're real easy to get out.
Tap the outdrive till it hits the 'e' clip.

Then tap the diff case against a flat surface i.e. table...

This is how I get mine out... I've only done it once as I forgot to put a 'seal' in my diff.

#oops#

Brilliant, thanks Adam

so when you tap the outdrive to the it hits the e-clip, another tap pops it off? Ill give it a go tonight.

[ben27111973]

one of the housing side geard popped off pretty easy, the other took a lot more force. only ended up slightly bending the eclip before it popped off.

pretty good result.

I have new x rings soaking in diff oil and will install and see how I go this time

[trap121]

One of my gears came right out of the diff case like Adam said. The other one is stuck and wont come out no matter how hard I "tap" it on the table.

Any suggestions???

[AmiSMB]

Place the diff in a vice so the jaws are supporting the diff case and that the output drive cup is facing downwards. Get a small driver that fits in the hole of the gear and gently tap the screw driver handle with a hammer. The e-clip behind the gear should be able to move against the x seal enough to release the bevel gear. Double check the bevel gear to make sure that it has not cracked. If the bevel gear still does not come off maybe use a soldering iron (25-40W) to gently heat the gear (make sure not enough to start to melt the diff case) and then tape the case hard on a table and see if if then comes off.

[wolffux]

I´ve tried your hints for sealing the diff! But no good results! I´ve tried high speed grease to seal off the outdrives; double X-ring ( as a short test); new diff housings! I don´t get them sealed! Use in front 5000 ande ind the rear 2000 oil! Any suggestions?

[mark christopher]

I´ve tried your hints for sealing the diff! But no good results! I´ve tried high speed grease to seal off the outdrives; double X-ring ( as a short test); new diff housings! I don´t get them sealed! Use in front 5000 ande ind the rear 2000 oil! Any suggestions?
how much oil are you putting in? should be no higher that the cross shaft, too much oil will force its own way out

[discostu]

I´ve tried your hints for sealing the diff! But no good results! I´ve tried high speed grease to seal off the outdrives; double X-ring ( as a short test); new diff housings! I don´t get them sealed! Use in front 5000 ande ind the rear 2000 oil! Any suggestions?


BALL DIFF

[mark christopher]

dude that would piss out his oil!!:p

[discostu]

dude that would piss out his oil!!:p


yeah but at least you would know where you stand with them:lol::lol::lol:

[DaSloth]

Anyone know if it is right that in the diff housing side of the diff, the gear sides on and off of the outdrive relatively easy with no tapping or force? once its on, there seems to be a fair amount of play where i can move the outdrive in and out of the diff housing which i dont think can be right.

Thanks

[DaSloth]

*bump* anyone? :(

[Rebelrc]

i dont think it should do that....
bang on the gear with a wooden dowl

[DaSloth]

tried that and it didnt help. i took the diff housing away and just put the E clip and then the gear on and compared how low the gear sat on the outdrive it was the same as when its in the diff housing :confused:

[Rebelrc]

They are ment to be an interference fit....does the gear just slip onto the out drive? if so you need another one ( gear or outdrive?) do all the others work correctly?

[DaSloth]

wasn't sure about this to be honest as the gear seemed slip easily to front and back outdrives on the diff housing side so i assumed it was normal. Front doesnt seem to leak other than a little seepage but the rear seems to leak more :(

[samd]

My crown wheels went on tight when new - after a rebuild they just slide on now the cars been run a bit. Diffs dont leak anymore - make sure you put loads of grease on the x seals and only fill the diff just to the top of the metal shafts, i was overfilling them to start with.
Im running 6000wt rear 12500wt front, i would expect the chance of leaking more with lighter weight oil.

[bender]

bump for this thread.

I am having problems getting the gear out that sits inside the housing.

I have got it to move about 1mm off the end of the shaft but thats as far as it will go :confused:

any help?

[shanks]

Hold the housing in ye hand

take a hex driver n hold it on hex end of drive shaft

Then wack it wit sharp taps using say some heavy pliers

It will knock through easy enough

may bend/destroy the eclip and spacer washer
so get some spares ready!

[bender]

Thanks.

Done that and I got it out eventually but have bent the washer and e-clip. Looks like I need to keeps spares of those.

[shanks]

Yea unless gears loosen up then the eclip n washers will get bent up!