Discovery 3 Electric parking brake fun - more tales from a crap bungling amateur

[SiC]

On 03/02/2025 at 17:55, Urko said:

So this is the gubbins - apparently I need to wind in the slotted rod at top left as it's extended too far.  If I am lucky that will sort things out (pending inspection and adjustment of the parking brakes).  If not, I am going to need the plastic cogs I bought in a kit off eBay just in case.

That looks almost identical to the units that Renault use on their vehicles of a similar vintage. 

[Urko]

21 minutes ago, SiC said:

That looks almost identical to the units that Renault use on their vehicles of a similar vintage. 

Crikey - that's actually very useful, I am just watching a video of a bloke doing one on a gooner 3 and the internals appear identical.

[Urko]

Round 2 today.  At first (after a lot of struggling to remove it) I was dissapointed there was no obvious problem with the wee plastic gears - until I looked a bit closer - 

 

Yeah, that won't be helping much.

[SiC]

I think I've got an old Scenic II unit in the garage. Bought it second hand as something to test against CAN diagnosis. As a compulsive hoarder, I don't think I threw it away. If I haven't, would it be useful to you?

No idea how similar the insides are but maybe some bits might be useful from it?

[Urko]

18 hours ago, SiC said:

I think I've got an old Scenic II unit in the garage. Bought it second hand as something to test against CAN diagnosis. As a compulsive hoarder, I don't think I threw it away. If I haven't, would it be useful to you?

No idea how similar the insides are but maybe some bits might be useful from it?

Speaking as a hoarder, that's very kind but no thank you.

[Urko]

Well it's all back together and working.  New cogs fitted - ebay £29.  I haven't been able to deal with the issue of the rusty remains of the old mounting plate and the bolts so I have zip tied everything to within an inch of its life.

Parking brake started working normally straight away with zero issues and no coding etc. needed.

[SiC]

Was going to say on the Renault's you're supposed to reset it with a diag tool if you yank the emergency handle but a couple of actuations on/off usually sorts it. 

[red5]

10 stops from xx mph using only parking brake iirc.

ps, usually fail because no-one ever strips, cleans, adjust parking brake shoes.

On a 2.7 tonne vehicle.

Just saying.

[Urko]

Yep this one was due to me not getting around to adjusting the brakes, after having the familiar squeal a couple of times.

When the weather is better as I don't have a garage at present I will revist this and sort out the bracket and clean up the shoes etc.  As someone else mentioned, the backplates are pretty shot from rust as well.