Need brake help please

bear with me, I'm asking this for a friend and il tell you all I know...

H reg 200 90 with disco rear axle. After 3-10 miles his pedal goes hard, o/s/f brake cums on, so slacken pipe (don't know where) and it's ok again. He's changed pipe and bypassed load sense valve and it's still the same

Grateful for any help please

Towsey

towsey956 said:

bear with me, I'm asking this for a friend and il tell you all I know...

H reg 200 90 with disco rear axle. After 3-10 miles his pedal goes hard, o/s/f brake cums on, so slacken pipe (don't know where) and it's ok again. He's changed pipe and bypassed load sense valve and it's still the same

Grateful for any help please

Towsey

Click to expand...

I'd look at the brake pedal free play adjustment, if the master cylinder cannot return to its 'open' position then it will effectively trap the brake fluid in the lines. If that happens and you have a dragging caliper then the heat can cause the fluid to expand but as it is trapped it will effectively apply a bit more pressure to the brake pads and make things progressively worse. Opening the pipe has the same effect as letting the master cylinder return to its open position (it allows the pressure to dissipate)

Yeah cheers for that, that's 3 of us that have said that now but I don't know if he's tried it yet. I've never had anything to do with Land Rover rods but I have experience with other vehicles, I remember I had to have a few goes getting one rite on a vw caddy van a few years ago, oh the joy

Thanks

Towsey