Thread: D2 SPONGY BRAKES

I suggest bleeding them again using the electronics - Nanocom etc.

Goes in two stages, ABS unit then wheels.

Good videos on youtube showing it..

is the cap on tight on the reservoir ? if loose i have found mine were a bit spongy as well

If you dont have a nanocom you can run the abs pump by linking a switch across the abs pump relay.
Whilst running the pump at 10sec pulses and bleeding.
I also pressed and released brake pedal while bleeding calipers pulsing abs pump.
Pedal is harder than ever

Ahhhhhh!.... the D2 spongey pedal, some call it the "chauffuer pedal" and that LR designed it into the Disco

My D2 has done nearly 300K and whilst browsing my newly acquired HAINES D2 Workshop Manual i noticed in the service interval pages that the flexible brake lines must be replaced at 160k (from memory - i might not be exactly right) and recently having had a 2 inch lift done i thought what better excuse do i need to invest in extended 'braided' brake lines. And fyi you could actually feel a "pulse" when holding the floppy old lines when at the same time an assistant pushed on the brake pedal (or are they expanding? either way not good...?). Anyway I purchased and fitted four GOODRICH Braided Brake lines and bled the brakes via pulsing the ABS pump as northiam explained and the pedal IS better than ever. As good as it is though! there are 2 remaining "original" flexible rubber brake lines that I'd like to renew and they can be viewed in the LHS wheel well on the chassis and i will soon get some braided lines made up to replace these and as a result are expecting a still firmer pedal!

onebob

I have firmed up spongy brake pedals by doing a power bleed of the modulator. I've had to customers comment how much better the brake pedal felt after.

What is the correct process to follow when doing a power bleed using a diagnostic tool?

Originally Posted by Pippin

What is the correct process to follow when doing a power bleed using a diagnostic tool?

Nanocom and Hawkeye has instruction prompts.
It asks you to press and hold your foot on the brake pedal and then proceeds to the modulator bleed process.

Thanks Rover Lord,
Yep, I have already been through that process with my Hawkeye. When you do the Modulator bleed process do you have the bleed valves of all callipers open?