Issue changing rear brake pads

Issue changing rear brake pads

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Dracoro

Original Poster:

8,684 posts

246 months

Sunday 19th June 2016
quotequote all
Changed brake pads a few times over e years (not this car though, 07 Lexus GS300) but i can't see how to extend out the calliper. Managed to compress in the piston OK but could not retract the calliper so effectively could only put new pad on one side of disc, the pther side I could inly put in the worn pad, too small a gap to put in new pad. Handbrake off, undid bleed nipple, top off fluid reservoir but could not retract back calliper.

Any ideas? For. Kw I have put old pads all back on to tackle another day (or pay someone biggrin)

Dracoro

Original Poster:

8,684 posts

246 months

Sunday 19th June 2016
quotequote all
Yes, that wound back OK.

Essentially the calliper isn't "floating" as such.

Dracoro

Original Poster:

8,684 posts

246 months

Sunday 19th June 2016
quotequote all
Slider pin I think, there's a piston on the inner side only.

Dracoro

Original Poster:

8,684 posts

246 months

Sunday 19th June 2016
quotequote all
Had I more time today, I would have tried the other rear to see if that slides as expected, this would point to an issue with the calliper?

Dracoro

Original Poster:

8,684 posts

246 months

Sunday 19th June 2016
quotequote all
Lexus GS300, 2007 model.

Dracoro

Original Poster:

8,684 posts

246 months

Sunday 19th June 2016
quotequote all
There are two pins that hold the pads in. They came out OK once the retaining springs removed.

the top bolt (top right of your pic) undos, but the bottom one (top left of your pic) was stiff (but cannot unbolt it as it's just a hinge) and cannot "slide it" it in/out.



the rear callipers were mew from Lexus about 3 years (27k miles) ago. Would they sieze in that tiime?

Dracoro

Original Poster:

8,684 posts

246 months

Sunday 19th June 2016
quotequote all
Only just spotted that screw on the hinge pin, couldn't see that with the calliper in place.

If I can slide the pin out, I will grease it - copper or normal?

Dracoro

Original Poster:

8,684 posts

246 months

Monday 20th June 2016
quotequote all
E-bmw - i have done this task (on previous cars) many times without issue, however none of them had siezed pins so I posted this thread in case there was a peculiarity that I wasn't aware of or something that I missed.

I also checked some youtube vids and I did all the steps correctly but it's now clear what tye issue is.

As stated this was an issue with thr floating caliper and not the piston which retracted no problem.