Front caliper restoration

[robolab]

Hello friends,

I want to restore my disc brakes. I ordered all the necessary parts for it, including the O-rings with a square cross-section, which are necessary for the hydraulic seal between the two caliper halves

Does anyone know the torque for the screws which hold together the two halves of the caliper

 

[HealeyRick]

Saw this when I was rebuilding mine: https://mgaguru.com/mgtech/brakes/bt104b.htm According to Barney Gaylord, Girling did not supply a torque spec. His recommendation: Use thread adhesive and "lots of torque" since the bolts are high strength

 

[John Turney]

Most recommendations I've seen say "Don't separate the caliper!"

 

[TimK]

Most recommendations I've seen say "Don't separate the caliper!"

I agree, I replaced the pistons in mine along with new rubber seals. They work great. The original pistons were chrome plated and had corroded because of my lack of maintenance (replacing the brake fluid periodically). I also replaced the original brake hoses which were badly deteriorated. The brakes now work great (oh, I also replaced the pads, one of the four of which had worn down nearly to the backing plate because of a sticking piston.)

 

[57_BN4]

I did a pair of type 16 calipers a year or so ago and found the torque specs ok. https://www.buckeyetriumphs.org/technical/Brakes/Front/Front.htm

You can verify the torque of any bolt by determining the diameter, thread pitch and tensile rating, then finding an online torque spec chart. The correct torque for any fastener is a function of those three parameters plus whether it is lubricated or not.

Andy.

 

[Brinkerhoff]

I've had great results splitting the halves. It makes it much easier to clean and rebuild them which is what its all about. Fit the new square section O ring carefully and torque evenly ( see above) and you'll be fine.