Front wheel rattle

[MalcolmK]

Hi

My new 310s SV has developed a rattle from the Left hand Side wheel which occurs when that wheel is disturbed eg going over bumps as the car is driven. If I do the same with my foot lightly on the brake pedal there is no rattle.

At the weekend I investigated this and found nothing loose until I removed the wheel, then I noticed one of the brake pad retaining pins was partly disengaged because the R clip used to retain it was missing.

I don't recall not fitting this and the car has been to Caterham for Post Build check and IVA test, and since done 2500 miles. Anyway now problems have resulted

So now I have pushed the pin back through and fitted the R Clip, but the rattle is still there.

I think it is the pads which are rattling, but only on the LHS.

Any ideas to confirm the cause and fix the problem would be appreciated.

Thanks

Malcolm

 

 

[MalcolmK]

should say Left hand side Front wheel

[Toby S]

Not sure on new caterhams what front brake calliper is used - if its still the spitfire single calliper, I found with my 93 Supersport using shims held everything in place nicely.

You can get shim kits from either Moss Europe or Rimmer Brothers under Spitfire parts

[john milner]

There was probably a clip there to begin with and it may have ended up being stuck somewhere it shouldn't. Remove the pads and look for R clip debris, check pad and disc condition and fit shims if the aren't any.

The next thing I would try as it involves a bit more work than simple checking is to bleed the system as there is possibly air in the left side allowing the piston to retract further than it should.

[Jim 123]

Your car will be the AP calipers.  Have you checked that the anti rattle shim is sitting properly.

[gulf 1]

I had the exact same thing happen to my 2015 supersport R.One of the R clips came out and one of the brake pad retaining pins was hanging out.I replaced the pin and fitted a new R clip but like you I had a rattle from the pads which stopped when slight pressure was applied to the brake pedal.When I checked the brake assemblies on both sides I noticed that the side that did not rattle had a spring that pressed on the pads to stop them rattling.On the side that rattled this spring was missing,you can identify this spring because it has has a cut out in it in the shape of a direction arrow.I got in touch with a very helpful chap at AP racing and he sent me a couple of these springs and also some R clips.I fitted the new spring and new R clip and the rattle was gone.However on checking the pads a few weeks later I noticed one of the R clips was missing again but the spring was still there this time.I have now replaced all the R clips with split pins so there is no chance they can come out again.Have don't quite a few trackdays since and all is still good.

Hope this helps