Back wheel squeal driving me mad

[Birmingham]

Morning lads. I have a mark 7, lovely runner, the only problem is this irritating squeal that comes when it’s warmed up. It sometimes takes up to an hour while driving, and I half do be thinking, bang on it’s gone, but the decker always returns. It’s on the back driver side. I thought it was a wheel bearing, but there is no grinding and it’s only when it seems to be warmed up. If I’m driving in a straight line it’s there, if I turn the wheel ever so slightly either way it goes, like sideways pressure is relieving the noise or the problem. I touched the back wheel and it was quite hot, which narrowed the problem down to the rear driver side. Checked pads and discs, they are fine. Just had it’s mot, nothing showed up at all. Could it be the brake calliper sticking? Or a dry bearing ? Zero grinding as I said, but I have to sort it, as it’s quite possibly the worst noise I’ve ever heard. Any advice would really help lads. Also it goes when I brake, when I release brake it’s instantly back..Thanks, chris

[grogan197]

Check the runout with a dti on the brake disc. It's not unusual to get noises from the brake disc if the runout is over spec and it typically occurs once the brakes have warmed up. The runout should be no more than 0.1mm

[Birmingham]

Check the runout with a dti on the brake disc. It's not unusual to get noises from the brake disc if the runout is over spec and it typically occurs once the brakes have warmed up. The runout should be no more than 0.1mm

Sorry mate, what’s a runout and dti??? Thanks for reply

[grogan197]

DTI is a dial test indicator, you use it to measure the runout which is basically a measurement of if your brakes are running true. If they run with a slight wobble (excess runout) then the pads will rub against the disc and you will have uneven wear on the disc (not noticeable with the naked eye)

There's a guide on testing the runout here http://www.apecbraking.co.uk/getattachment/7c2582da-83bd-41be-8ecd-1ec73ea8ce8d/Understanding-Brake-Judder-and-Preventative-Steps.aspx

[knobby1]

FWD or RWD..??

Also I wonder if the handbrake is holding on a bit?? Sticky cable or the caliper lever not going all the way off??

Lord Knobrot

[Birmingham]

FWD or RWD..??

Also I wonder if the handbrake is holding on a bit?? Sticky cable or the caliper lever not going all the way off??

Lord Knobrot

There was no travel hardly on the handbrake when I got it, hard to get one click. So I loosened the tensioner underneath the chassis. Now the handbrake light is on and only goes off if I apply pressure pushing down on handbrake when driving but as soon as I let the pressure off the light comes back on and the handbrake rises a little, like it won’t sit down properly. Do you think it needs slackening more ?

[Birmingham]

FWD or RWD..??

Also I wonder if the handbrake is holding on a bit?? Sticky cable or the caliper lever not going all the way off??

Lord Knobrot

Sorry it’s fwd. Thanks

[andz327]

Caliper probably sticking on one of their slides or sticky H/cable lever on caliper

[Birmingham]

Caliper probably sticking on one of their slides or sticky H/cable lever on caliper

Cheers mate, i'm thinking that too

[andz327]

Caliper probably sticking on one of their slides or sticky H/cable lever on caliper

Cheers mate, i'm thinking that too

Remember n/s/r caliper (anti clockwise) winds in opposite direction from o/s

[Birmingham]

Caliper probably sticking on one of their slides or sticky H/cable lever on caliper

Cheers mate, i'm thinking that too

Remember n/s/r caliper (anti clockwise) winds in opposite direction from o/s

Thanks for reply. Would you just grease the slides and wd40 any springs involved like up at the handbrake .?

[bigjohnthomas]

Take the caliper off and move it in and out and put some love juce on it
Bloody annoying squeeeeek that

[Punto443]

Mine was doing this and it was the handbrake lever on the rear caliper sticking

[andz327]

Take the caliper off and move it in and out and put some love juce on it
Bloody annoying squeeeeek that

Lube juice it up............... yeeehaaaa

[Birmingham]

Mine was doing this and it was the handbrake lever on the rear caliper sticking

just a bit of lube ?