I need rear calipers for an old Saab, all the remans are garbage and nothing new was available but pistons and seals are so I had to rebuild them.
On the remans most had the wrong bolts installed a grade 8.8 instead of the oddball 11.9 and they are M7x1 so no 12.9 available either.
Torque spec is above the 8.8 rating and they just throw the pistons in without setting the angle to 29mm as is required for them to release properly.
This is what I had to work with and how they came out, one is finished still finishing the other then its on to the fronts.
Nothing special, just a cleanup with new pistons a hone job and seals. I figured you guys might enjoy pics of what you have to do when there is no other alternative.
On the remans most had the wrong bolts installed a grade 8.8 instead of the oddball 11.9 and they are M7x1 so no 12.9 available either.
Torque spec is above the 8.8 rating and they just throw the pistons in without setting the angle to 29mm as is required for them to release properly.
This is what I had to work with and how they came out, one is finished still finishing the other then its on to the fronts.
Nothing special, just a cleanup with new pistons a hone job and seals. I figured you guys might enjoy pics of what you have to do when there is no other alternative.