Front brake caliper leak

Post by **misha** » 23 May 2022, 02:48

I have a leak at front pasenger side brake caliper.
Leak comes out from a piston.

When i replace the caliper...do i need to bleed all lines or just that one?

Post by **abscate** » 23 May 2022, 04:08

Just that one should be fine, Misha. I’ve always found it easier to start the unions with the caliper loose rather than attached. Crack the union while attached , then remove caliper. If you quickly unscrew the caliper then plug the new one in, you don’t lose much brake fluid.

If you unscrew the caliper by turning it on the hardline, you don’t have to fuss with those tough hardline to soft line junctions

Some pictures here

viewtopic.php?t=57155&hilit=1999+v70+t5&start=10

This procedure has been approved by Serbian Huskies....

Post by **misha** » 23 May 2022, 04:39

Replacement caliper arrived.

I'll report back when i'm done.

Post by **misha** » 23 May 2022, 14:50

Brake caliper replaced,brake line bled and since brake pads were down to just 4-5mm i replaced them too.

Performed initial bedding-in procedure and from now on i need to avoid heavy braking for around 300-500km.

I bled the line with engine running...i hope i didn't messed something up.

Some say without engine running...some say with engine running.

I don't see the difference with or without engine running,since principle is the same.

Post by **scot850** » 23 May 2022, 15:43

The advantage of engine running is you get the servo boost in the line which may help move any air pockets. You can do the same with a pressure bleeder without the engine running.

Neil.