Easy way to clean EPB ?

[l00kin4]

Hi,
I've read through about 20 different threads on this topic and also Bodsy's excellent brake bible (which describes many things including the adjustment of the EPB but not really cleaning only the EPB when not doing other jobs) but what I can't really determine is this - is there an easy way to clean out the EPB?

I found one reference to blowing compressed air through "the hole with the plug" :

The buildup of dust etc in the parking brake drum has caused me problems such as orange warning light coming on. I now have found that by regularly blowing out with the air gun though the hole with the plug fixes this. Not sure about mud. Also adjusting the parking brake seems to be required more often than you would think, given mine does not get a lot of use.
Hope this helps.
Ivan

Assume this is the plug:
121542

I don't think it requires adjustment or new shoes, just to be cleaned out. It has been 'squealy' before after driving through quite a bit of mud (that time it was serviced just after that and had new pads fitted anyway so got cleaned out at the same time) and now is a bit squealy again after driving through water.
Won't harp on what a stupid design this is but do I really have to remove rear wheels, callipers and discs just to clean out the EPB ?
Thanks in advance.
David

[Russrobe]

I've been wondering the same thing. Thought it might be a good idea to do the job after GRR before we turn around and come home.(in case it jams on somewhere between Lake Argyle and Perth.)

So hopefully someone has good news for us.

Still havent located the height sensors yet either. Will have to do that before we leave.

[The Mighty Range Rover]

Hi,
I've read through about 20 different threads on this topic and also Bodsy's excellent brake bible (which describes many things including the adjustment of the EPB but not really cleaning only the EPB when not doing other jobs) but what I can't really determine is this - is there an easy way to clean out the EPB?

I found one reference to blowing compressed air through "the hole with the plug" :


Assume this is the plug:
121542

I don't think it requires adjustment or new shoes, just to be cleaned out. It has been 'squealy' before after driving through quite a bit of mud (that time it was serviced just after that and had new pads fitted anyway so got cleaned out at the same time) and now is a bit squealy again after driving through water.
Won't harp on what a stupid design this is but do I really have to remove rear wheels, callipers and discs just to clean out the EPB ?
Thanks in advance.
David


I take the rear wheels off and run some water into that hole with the hose, the amount of crap that came out was quite interesting (after a muddy afternoon). It made the EPB much quieter too.

[l00kin4]

I take the rear wheels off and run some water into that hole with the hose, the amount of crap that came out was quite interesting (after a muddy afternoon). It made the EPB much quieter too.

Thanks for that. That's the kind of answer I was hoping for! I'll give it a go and report back.

David

[Geedublya]

Same, flush it out through the hole with a hose, run until water is clean.

[LRD414]

Good thread David. Is the little plug plastic and is it worth buying a spare or two in case of damage during removal?

Scott

[LandyAndy]

Good thread David. Is the little plug plastic and is it worth buying a spare or two in case of damage during removal?

Scott

Just had a look at mine.It appears to be metal with an O ring seal.Would be interesting to know how easy it is to remove because you can get to it with the Compomotives still fitted[smilebigeye][smilebigeye][smilebigeye][smilebigeye][smilebigeye]
Andrew

[l00kin4]

Good thread David. Is the little plug plastic and is it worth buying a spare or two in case of damage during removal?

Scott


Just had a look at mine.It appears to be metal with an O ring seal.Would be interesting to know how easy it is to remove because you can get to it with the Compomotives still fitted[smilebigeye][smilebigeye][smilebigeye][smilebigeye][smilebigeye]
Andrew
If I can get to it this weekend I'll report back. And if I can remove the plug, flush clean with the hose and replace the plug without removing the wheels I'll be very happy with that! 👍
David

[PerthDisco]

I take the rear wheels off and run some water into that hole

Never, ever would have thought of that!

[eddy]

The plug is light weight plastic,easy to remove just using fingernails[well that's on a My11]Gave mine a blow out and adjust whilst changing wheels,lot less whirring when engaging the epb.

[go-disco4]

The plug is light weight plastic,easy to remove just using fingernails[well that's on a My11]Gave mine a blow out and adjust whilst changing wheels,lot less whirring when engaging the epb.
[QUOTE]Item Part Number Description
1 - Brake shoe
2 - Shoe locating pin and clip
3 - Adjuster spring
4 - Toothed wheel adjuster
5 - Backplate
6 - Return spring
7 - Cross strut
8 - Wedge adjuster screw
9 - Dust shield
10 - Rear brake disc
11 - Adjuster access plug
Each drum brake consists of a pair of brake shoes installed on a backplate attached to the rear hub carrier. The brake
shoes operate on the drum integrated into the rear brake disc. The orientation of the brake shoes differ by 180° between
the left-hand (LH) and right-hand (RH) brakes.
When the parking brake module tensions the brake cables, the movement is transmitted to an operating lever on one of
the brake shoes. The operating lever pivots against a cross strut, which forces the brake shoes apart and into contact with
the drum in the rear brake disc. Brake shoe to drum clearance is set with two manual adjusters, which are accessed
through a hole in the brake disc. One of the adjusters is a conventional toothed wheel adjuster. The second adjuster is a

wedge adjuster operated by an Allen screw.

See attached PDF diagram

GD-4




121711

[carlschmid2002]

The first time I adjusted mine on the D3 I took the whole cover off. Once you are familiar with the system it is possible to adjust the shoes by just removing the plug. I would spray a little WD40 on the springs and mechanism once you get the crud out, They tend to be very rusty.

[l00kin4]

Just to close this thread out, I flushed the EPB with the hose and it did clean out a fair bit of dirt and brake dust. The EPB is nice and quiet now.

In the end, just to get a better look at it, I took the wheels off to access the plug. I thought I'd try it without removing the disc.

With the Compomotives on you probably could pop the plug out- it is a little bit difficult to get purchase on the lip of the plug because of the limited space though.

With something like the pictured right angle on the hose (I thought I might just bend a bit of copper pipe or maybe just connect a smaller diameter hose to the garden hose..), give it a pretty good flush or blow without removing the wheels.

Thanks for all the advice.

David

122085122084122083122082122081

[LandyAndy]

Will an O ring pick get the plug out with the GOE wheel fitted do you think????
Andrew

[l00kin4]

Will an O ring pick get the plug out with the GOE wheel fitted do you think????
Andrew
Hi Andrew,
I reckon it would but it might take some fiddling. It's not in particularly tight but it has a little bit of depth to it so needs to come out reasonably straight. I was thinking that a forked trim tool something like the one pictured below might do the trick...
David

[rsp]

The only prior EPB problem, in 12 years of ownership, occurred after last lot of new discs were fitted and this was fixed by the service place. The problem, a noise when it is applied) recently returned, but only when low range is engaged.

i have had the wheels off and washed out the assembly with a hose and I have also run a calibration using the IIDtool, that runs ok, but does not resolve the issue. Mainly brake dust came out from the flushing. The plastic plug was not present on either wheel and the Canberra LR spares man said that some owners choose to leave it off, but I have ordered replacements. I did not spray WD40 through the hole (mainly because I had missed that tip), but will do so when I fit the plugs.

Does anyone have any ideas as to why the problem should only manifest itself when low range is engaged? Originally, I thought the problem was fixed, until I realised that it only occurred when in LR, so I did not take further action at the time.

[PerthDisco]

Something about it applying more braking force when in Low Range I have read?