Hi all,

I have an R53 that I have just fitted refurbished R56 front calipers to, new pistons and seals, rear calipers have new pistons and seals.
All rotors and pads are new.
I’ve tried pressure bleeding the system, got lots of air out but I can’t seem to get a solid pedal.

I don’t have a diag too to trigger the abs module, is there any other way to sort this?

Thanks.

 

Air in there somewhere. I would get it best I can, then take it to a shop to do the final bleed.

FYI, the factory procedure is to push the brake pedal down and secure it, then brake the line at the caliper. By pushing the pedal down, it keeps fluid from draining through the system when opened up. Then the only air to get out is at the caliper.

 

Thanks for the reply, so pedal down and secured while bleeding?

I’ll be using a pressure bleeder connected to the fluid reservoir.

 

Actually, pedal down and secured before removing the brake line to swap calipers.

I also have a pressure bleeder, but not sure if it can get all the air out of the ABS module.

 

Ditch that and go to vacuum bleeder instead if you have shop air. Like $20 for one on eBay.

The other option is to reverse bleed, ie push fluid backwards from caliper to the master. Just make sure you have a turkey baster and a two man team to do that one. The vacuum bleed can be done single handed.

 

Wonder if this would work with a clutch slave cylinder replacement
I'd really like to see if this works, seems like it would be so much easier and straight forward. Found a good explanatory video on it with regard to clutch bleeding, but it doesn't address brakes, let alone with ABS. Still seems like ABS would be the monster in the middle to get around, but not sure.