Removing gear from outdrive (housing side)

dasbo · #1 08-09-2010

alright folks,

I know this has been in threads before (some time ago) but I just thought I'd check to see if anyone has come up with a better method than tapping the gear housing on a worktop. No amount of tapping is removing my gears from the outdrives. This is the first time I've tried to do this since building the car a year ago, since my diffs have been leak free until now. If I remember rightly, they were a very snug fit to begin with. I've also been whacking it with a hex driver and hammer but it's still not popping off.

Is this something else I have to take the dremel to during maintenance?

Cheers guys

telboy · #2 08-09-2010

Mine were a pretty 'snug' fit too.
The best way is to order some of the shims and eclips that fit inside. Then place the diff on something with a hole in, so that the outdrive fits through, then using an old driver and a small hammer, just tap the outdrive through. The e-clip and the shim will distort, hence the new ones to replace them.
This was the ONLY way I could get mine out too. So it had to be done.

BUT, when I put everything back together, the gears just dropped onto the outdrive nicely, without any 'force-age'.

So next time they will probably just knock out easily.

dasbo · #3 11-09-2010

Cheers Telboy.

I think I'll try as you suggest and drill a hole in a piece of wood, just big enough for the outdrive, and then hammer it out bending the e-clip.

i just hope its not like this everytime i need to disassemble.

telboy · #4 11-09-2010

Shouldn't be. Like I say, it whent back on with out any force after it had been stripped.

IceMike · #5 15-09-2010

will this method distort the gear or plastic parts of the diff?? need to make sure i order everything i need

Stretch · #6 10-10-2010

Just out of curiosity:

Why wouldn't you just get a straight bladed watchmaker's screwdriver, insert it between the inside of the e-clip and the shaft of the outdrive and twist it to pop the e-clip off? Takes a couple of seconds, no effort and you can usually reuse the clip as it doesn't get damaged.

HTH

Andyp · #7 10-10-2010

Quote:

Originally Posted by Stretch

Just out of curiosity:

Why wouldn't you just get a straight bladed watchmaker's screwdriver, insert it between the inside of the e-clip and the shaft of the outdrive and twist it to pop the e-clip off? Takes a couple of seconds, no effort and you can usually reuse the clip as it doesn't get damaged.

HTH

You need to get the gear off before you can see the e clip on the plastic housing side ! i trial fitted my out drive to the gear before i put it thro the housing removing very small amount of anodising from the hex on the outdrive so it just falls out with a tap on a worktop/bench

Kababking · #8 10-10-2010

Just put the housing upside down for ten minutes and the gear will fall out without using any force at all. Note, if it doesnt fall out, just carefully knock it on the table and it will come.
G-force and oil works in mysterious ways

Then it is just to remove the e-clip without any hassle.

I discovered this by a coincidence

Cheers

telboy · #9 11-10-2010

That is ok when the gear goes onto the outdrive without any force needed.

My first lot had to be tapped hard to get them in the right position. I have tried the waiting game, but it never even budged. The fit was so tight that the only way to get the outdrive out was to hammer it out.

dasbo · #10 12-10-2010

Mine was the same as Telboys. I had to tap it quite firmly to get it onto the outdrive in the first place, so it wasnt going to come off again without a fight. Its all done now though but its leaking already, so maybe the diff housing has been slightly damaged removing it in this way, but I had no other choice.

dpackster1980 · #11 13-10-2010

Quote:

Originally Posted by dasbo

Mine was the same as Telboys. I had to tap it quite firmly to get it onto the outdrive in the first place, so it wasnt going to come off again without a fight. Its all done now though but its leaking already, so maybe the diff housing has been slightly damaged removing it in this way, but I had no other choice.

The casings are that cheap that i'd replace them when doing the seals anyway. They're £3 and you should replace them anyway as the grooves wear where the shafts locate which will cause excessive wear on the gears.

Chequered Flag Racing · #12 13-10-2010

you could try flushing the casing out with motor spray or similar to release the 'suction' the oil may create between the gear and the case

mark christopher · #13 13-10-2010

Quote:

Originally Posted by Chequered Flag Racing

you could try flushing the casing out with motor spray or similar to release the 'suction' the oil may create between the gear and the case

there an interferance fit to the outdrive so its not the oil holding them on

Chequered Flag Racing · #14 13-10-2010

Quote:

Originally Posted by mark christopher

there an interferance fit to the outdrive so its not the oil holding them on

that's what Adam S suggested back in Jan this year

LiL_JaSoN · #15 14-10-2010

my front diff fitted fine, but the rear was tight as hell.

someone recommended lightly sanding the anodizing off the shaft, so next time i come to remove it if it doesnt pop out, ill have to hammer it out and ill try lightly sanding the shaft

dpackster1980 · #16 17-10-2010

I've had to replace a crown gear and because I had removed the gear once now it just falls out.

Hopefully when I renew the seals alround all the gears will just fall out with a couple of knocks on the table.

mikeyscott · #17 31-01-2011

Why should you have to break parts to service the car

Not impressed

JohnM · #18 31-01-2011

Quote:

Originally Posted by mikeyscott

Why should you have to break parts to service the car

Not impressed

You don't need to break anything to get it apart Mikey, I use a couple of small watch maker screw drivers, and lift the gear off that way, everything is ok to use again after.

mikeyscott · #19 31-01-2011

Quote:

Originally Posted by JohnM

You don't need to break anything to get it apart Mikey, I use a couple of small watch maker screw drivers, and lift the gear off that way, everything is ok to use again after.

Will have to aquire more tools. Had it apart to change the o rings to kyosho ones. 3 out of 4 done

raymondkerr · #20 31-01-2011

Best way to remove the crown gear, is to spray in some motor/nitro cleaner, leave it to soak for 5-10 minutes, then tap the diff case firmly on a flat surface, even the most tight crown gears come loose, I have done this several times, no need for any extra tools, just some cleaning spray that most people would normally have in the box, even WD40 seems to work.