E90 rear brake dust shields
Discussion
Decided to sort the handbrake on the 320d 2011 and one side went fine, new shoes, discs and pads, however the near side backing plate that holds the shoes has been beaten flat by some total moron.
The shoes don’t sit right in the disc and it’s all mangled up.
I need to replace the backing plate, can these be cut and slotted over the hub? Or is it a bearing out job?
Cheers.
The shoes don’t sit right in the disc and it’s all mangled up.
I need to replace the backing plate, can these be cut and slotted over the hub? Or is it a bearing out job?
Cheers.
steve_bmw said:
Right guys, good news, the backing plate is separate from the shoe retaining plate, and it has a slot in it.
It was so beaten I couldn’t tell on the car.
Are you sure? On that diagram it looks like the shoe retaining hole (London Underground sign shape) is within the plate as carry-over from E36. You can solve byIt was so beaten I couldn’t tell on the car.
1) new plates, which is bearing out job
2) make up some retaining clips
3) buy new backplates, cur in half, fit without touching bearing.
I tried 2, eventually ended going to 3. (1, is really a no-no.)
Total loss said:
steve_bmw said:
Begs the question now, could E90 backing plates be used on an E46 to save the hassle of standard E46 ones?They're a completely different shape - E46 ones are basically E36 types. You can still cut then and wind them on. I've seen these with a couple of dabs of weld or a pair of big strong tie wraps used but once bolted on they don't really flex or move.
The E90 was basically an E46 where someone actually stopped for a minute and considered how it could be repaired easily. They're so much easier to work on it's unreal. Backplates, radiators, expansion tanks, window regulators etc are both a lot more robust and far easier to fix.
The E90 was basically an E46 where someone actually stopped for a minute and considered how it could be repaired easily. They're so much easier to work on it's unreal. Backplates, radiators, expansion tanks, window regulators etc are both a lot more robust and far easier to fix.
Touring442 said:
They're a completely different shape - E46 ones are basically E36 types. You can still cut then and wind them on. I've seen these with a couple of dabs of weld or a pair of big strong tie wraps used but once bolted on they don't really flex or move.
The E90 was basically an E46 where someone actually stopped for a minute and considered how it could be repaired easily. They're so much easier to work on it's unreal. Backplates, radiators, expansion tanks, window regulators etc are both a lot more robust and far easier to fix.
OK. That is surprising, at Ford all our design feasibility meetings had Service Engineering represented, and very vocal they were too - almost as vocal as Manufacturing Engineering!The E90 was basically an E46 where someone actually stopped for a minute and considered how it could be repaired easily. They're so much easier to work on it's unreal. Backplates, radiators, expansion tanks, window regulators etc are both a lot more robust and far easier to fix.
From a mechanics's perspective, the E46 is a spectacularly bad design. For example, the way in which the front strut clamp bolt threads directly into the hub (rather than a nut and bolt) is just asking for trouble. Moving the failure prone heater fan resistor from the glovebox side to the steering column side must have been an act of pure malice. 
Mind you, it's only with the F30 that BMW finally - finally! - made the rear damper top mounts accessible from under the arch, thus avoiding the tedium of taking all the b*stard boot trims out.
Mind you, it's only with the F30 that BMW finally - finally! - made the rear damper top mounts accessible from under the arch, thus avoiding the tedium of taking all the b*stard boot trims out.
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