hi all

am after guidance

my rear near-side brakes had been sticking

after removing old pads i have been trying to wind in the piston.

it does not want to budge clockwise, it is stiff anti-clockwise too.

is there some part inside that might need cleaning and greasing?

any thoughts?

i am contemplating taking the assembly from the car to get better leverage. can anyone guide me on the best process for doing this please?
or is there a better way?

cheers Bert

 

There are have specialty tools (I have one) which attach to a rachet and they grip the piston to retract them.

Still a PITA nonetheless.

 

if the piston is proving particularly stiff is there a likelihood of requireing the unit to e stripped and cleaned?

they were nowhere near this stiff last time I changed the pads. a large bladed screwdriver was adequate on that occasion.

can i use the brakes to push the piston all the way out, clean and grease and then replace?

I will also try a few tool places to make life easier when I do re-assemble

 

The threaded part (in red cirkel) is inside the piston.
The piston won't come out that far without leaking.
It should turn clockwise to retract.



bert_smith Posted on Jun 7 2007, 07:32 AM
Not without a full & proper brake fluid bleed

How about the hand brake (e-brake)?
The hand brake is off ... right?

 

hi
have been inundated

anyway
I took the assembly apart
the edge of the piston (part 18) has surface corrosion which was binding with the wall of the caliper housing (part 4)

I haev cleaned all parts and all seemed well, until the dust cover (part 19) had t be replaced.
you can just about get this into place but it refuses to remain in the groove in the housing.

(

 

do you guys use any grease when you service or clean the brake piston?

 

ever since changing my rear pads myself it has been making a grinding noise when the rotors are cold. ocne the car warms up it's fine.
wonder what it could be?

even if i don't brake i can hear the grinding... it's a high pitched squeel like my brakes are out.

 

? brake rotor shield

 

The entire caliper assembly needs to come off, taken apart and re-built.

They're not supposed to be that hard to retract the piston.