oily looking rear brake drum

[Eighties Flamer]

Appealing to you fellow surf experts, I have a 3rd generation kzn185 surf which has gradually developed a oily looking rear brake drum, and has spat whatever it is on the inside of the wheel. I assumed it could only be a wheel cylinder so ordered a couple from roughtrax, took rear drum off to find a very dry clean looking rear wheel cylinder, although there was a lot of oily greasy substance on the shoes,backing plate etc etc, also noticed a bit of play in the shaft, so my questions are what is weeping or leaking and should there be any play in the half shaft.
Any advice would be appreciated as am doing it myself and i am like everybody else not a lot of spare cash and not enough hours in the day to do all your jobs and keep the wife happy.

[Panrixx]

Sounds like it could either be the rear bearing oil seal or bearing or both letting diff oil through into the drum area. If the cylinder is not leaking I cannot see where else oil could come from.

[BUSHWHACKER]

Could be the rear wheel bearing or oil seal that are knackered.
This will show what I mean, but is for a 2nd gen, but roughly the same set-up as yours...

http://www.toyotasurf.asn.au/techsite/wheelbearings.htm

[laser_jock@work]

As above- either the halfshaft seal and/or rear wheel bearing has failed causing diff oil to to leak. The smart thing to do is replace the seal AND bearing at the same time in one job. Use Roughtrax bearings as Milners ones have a chequered history.......

[NiftyNev]

KZN185s have a history for leaking rear axle seals. Have a look through the Aussie Surf Site KZN185 forum for more info. I can't remember the details but there was some info on one or two members who still had a problem even after replacing the seals and not sure if they eventually did solve it.

Nev

[namira]

I have just taken mine in for a service at Nene Overland (nice people) and they tell me that both rear brake shoes are contaminated with axle oil. Both rear axle/ halfshaft oil seals are leaking so I am having them changed.
The only time I noticed the brakes were iffy is when I collected it and after a few miles they seemed ok ,I guess I had dried out the oil a bit.
Hope that helps.
Paul.

[kiowa]

i just had to do one on my 3rd gen.if you are going to get it done you may as well replace the two seals and the wheel bearing whilst it is stripped down to save you wasted time and money if the seal you replace is the wrong one and it is near impossible to tell what one is causing the problem.the list of things i replaced was two press fit collers,inner/outer oil seals'wheel bearing and brake shoes.if you do it yourself you will need a garage to remove/refit the collers with a press.total cost was about £90.if you want i can pm you my number and if you get stuck or want any advice you can call me just let me know

[namira]

That’s really decent of you thanks , I am going to get Nene to do it and I will give them a call and ask them to change the wheel bearing and brake shoes at the same time.
Its not that I can’t do these things for myself its because I,m new to Surfing and want to have it sorted so I have a level playing field to begin with. I’m glad I didn’t attempt it as I don’t know the area I now live in and would not have a clue where to find a friendly garage with a press.
It should be fun to get the underused tool kit out eventually.
Are the bearings easily available as I guess Nene will have to order them and I have to take it in on Thursday ?

[namira]

Appealing to you fellow surf experts, I have a 3rd generation kzn185 surf which has gradually developed a oily looking rear brake drum, and has spat whatever it is on the inside of the wheel. I assumed it could only be a wheel cylinder so ordered a couple from roughtrax, took rear drum off to find a very dry clean looking rear wheel cylinder, although there was a lot of oily greasy substance on the shoes,backing plate etc etc, also noticed a bit of play in the shaft, so my questions are what is weeping or leaking and should there be any play in the half shaft.
Any advice would be appreciated as am doing it myself and i am like everybody else not a lot of spare cash and not enough hours in the day to do all your jobs and keep the wife happy.

I’m glad I did not try to replace the wheel bearings myself as mine could not be removed even with a press. So if yours are like mine they may be difficult.
Paul

[kiowa]

how come they couldent remove it.they did remove the sur clip first dident they because if they dident it aint going to go no were

[TonyN]

how come they couldent remove it.they did remove they sur clip first dident they because if they dident it aint going to go no were

hehe, its the hidden circlip under the ABS ring, it catches everyone out first time!

Its a dumb design, without the ABS you just remove the circlip, put the whole thing in a cut down axle housing and press it out. But when they fitted the ABS, they left the circlip on, then pressed the ABS ring and its retainer on top, so you have to mess around with long pullers to get the ABS ring off, then you can get to the circlip.

You can heat the retaining ring to get it off easier, but personally i don't like getting that much heat near an axleshaft.

[namira]

I don’t know, although they did say that trying to remove the bearings broke their press. I left my shiny new handbook in the car and as they are specialist Landy repairers I guess they would know that bearings need retaining somehow. I did think that I should have taken BUSHWHACKER’s excellent step by step instructions with me but thought that that would be presumptuous.
I really hope the backing plate does not get bent. I have to collect it today so I will let you all know how it went.
Thanks for all the advice.
Paul

[namira]

hehe, its the hidden circlip under the ABS ring, it catches everyone out first time!

Its a dumb design, without the ABS you just remove the circlip, put the whole thing in a cut down axle housing and press it out. But when they fitted the ABS, they left the circlip on, then pressed the ABS ring and its retainer on top, so you have to mess around with long pullers to get the ABS ring off, then you can get to the circlip.

You can heat the retaining ring to get it off easier, but personally i don't like getting that much heat near an axleshaft.

TonyN, thanks mate. I just called them and mentioned the hidden circlip which they knew about, they have been told by Toyota that the collars have to be cut off and this they have done so they are just awaiting the new parts and then it can go back together.
More later.
Paul

[marky]

GUESS WHAT mines failed the MOT due to rear brakes failing. Ive just discovered the problem stems from rear axle seal BUGGA

[TonyN]

TonyN, thanks mate. I just called them and mentioned the hidden circlip which they knew about, they have been told by Toyota that the collars have to be cut off and this they have done so they are just awaiting the new parts and then it can go back together.
More later.
Paul

The collars do press off, Toyota are as bad as the rest. I used to cut the collars off before I got my press, I hated cutting the collars myself its to easy to nick the shaft, let along letting some numpty at the dealer close to an axle shaft with a grinder or torch!!

They must have a girly press, my 25 ton one does it in its sleep. I've done 2
3rd gen rear bearings in the last 2 weeks.