Knocking noise from Disco rear brakes

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I dont think you're in any danger of failure. If they had the pads out several times then they are most likely put back in properly. I've had brakes make strange noises after relining / new bits fitted, but its always gone away eventually. I think its a case of suck it and see, but I would write to the dealership who did the work telling them what you told us, 'just for the record' so if the knock comes back you have something to beat them with.

Hate to be controversal but I would be less inclined to trust a dealer than an independant. Less loyalty, more time pressure, less need to keep good name. Once had a brake set up sorted at a main Renault agent and after a day or so of overheating rear drum discovered they had left a clamp on the pipe allowing fluid into system under pressure but no return due to restriction. Took in offending clamp on the Monday and had a quiet word with WS manager. Same place 'serviced ' the car and ended up having to return as some little oik had filled the power fluid box to the brim instead of the full mark ( despite being told that I had checked levels before they got their mits on it ).

Obviously it alsmost impossible to make a "proper" diagnosis without seeing the vehicle, but I'd go along with the above. I'd hazard a guess that the discs have a "sticky bit" of the gunge that they are protected with for storage, and the knocking is the pad "hitting" this and jumping a bit. As you seem to have observed, if that is the cause it will go away with use. Richard

Sort of says it all about their workmanship if they are too ignorant or idle to clean the new discs off before fitting them doesn't it.

In article , EMB writes

Genuine landrover Discs come with a very hard protective paint that is a sod to get off. The best way to remove it is to fit to the vehicle and let the brake pads do it for you.

Lacquer thinners and scotch brite has always worked for me. The accpeted trade practice is that discs are *clean* before use - and when playing with something as important as brakes you should get things perfect every time.

Hm? That's what I was thinking.

I've done another 50 miles today and haven't heard or felt anything strange.

It's probably all OK.

Thanks for all your comments.

Judith

In article , EMB writes

In the old days you could just degrease them with brake cleaner. nice a quick.

Now do you want to pay the £80+VAT per hour for some oily rag to polish the protective coating of your discs ?

Interestingly enough all other makes of LR discs still come lightly greased even the OE ones. I keep both on the shelf

Given that it takes maybe 5 minutes to clean a pair, yes I do. As a customer even at 7 quids worth of labour it's cheap compared to all the hassle and worry of strange braking noises. As a workshop proprietor I certainly want it done - I don't want complaints, reworks and worry from the customers, otherwise they'll spread their story and then my business will lose it's reputation for being "Not the cheapest garage, but bloody good mechanics and value for money" as it was put by one of my customers.

Indeed....

Richard