Author Topic: Compressing the cylinder in the caliper  (Read 1390 times)

Big Yellow

  • Full Member
  • Junior Level
  • *
  • France, Provence-Alpes-Côte d'Azur, Roquefort les Pins
  • Posts: 13
Compressing the cylinder in the caliper
« on: August 12, 2018, 15:38:43 »
Hi all,

I need a little advise on how to compress the cylinders on my front brake caliper. The brakes on the left side siezed up and I needed to take a look at the disc and pads. Once I loosened the caliper I got the pads out, but I don't seem to get the cylinders to retract... They moved out when I pushed the brakes, but they wont go back. I have opened the bleed nipple, and brake fluid is coming out, but the cylinders are totally stuck... The nipple to the brakeline is not budging so I can't get the calipers out, which makes it impossible to get a clamp in because of the disc... I can't understand why the cylinders don't retract back...? >:(

Any advise welcomed.

/ BY
Vidar "Big Yellow" Holmdin
MB 230 SL - 1964 manual

hkollan

  • Associate Member
  • Gold
  • *****
  • Spain, Castilla-La Mancha
  • Posts: 519
Re: Compressing the cylinder in the caliper
« Reply #1 on: August 12, 2018, 17:07:00 »
Hi,

You need a piston retraction tool.
Here is one that I've used for this purpose.



Not the best quality but might last for a while if not abused.

Hans

Hans K, Cuenca, Spain
1968 280 SL 387 Blue met., parchment leather
1971 280 SL 462 Beige met, Brown leather
1968 280 SL 180 Silver, Red leather
1964 300 SE Lang 040 Black w/Red leather
1985 500 SL 735 Astral Silver w/Black leather
1987 560 SEC 199 Black met., Black leather