P38 hard very occasional hard brake pedal ( hopefully cured ).

Neil.ms said:

2001 4.0L. Has had a very occasional hard brake pedal. I initially replaced the accumulator, then tried a used abs pump but the problem would still reappear. Took it off the road this spring to get a long list of small jobs done. Rear brake lines had been replaced at some point, but as they looked rather clumsily done ( very polite ). I thought I would re-do them. Very glad I did, as some of the flares were dodgy. Top tip - it’s a lot easier to fabricate and fit new rear brake lines with the abs module and steering linkage removed. With the abs module out, I thought i would check it over and see if I could find anything wrong with it. Disassembly not too hard ( lots of photos taken, and measurements made ). I found one of the piston seals damaged so I replaced all of them, cleaned out the internal filter and also cleaned out the brake fluid reservoir. Re-assembly was fairly easy. Brakes were bled according to rave and then tested. I have driven about 100 miles so far with no hard brake pedal! Then again the p38 may be messing with my mind and it may suddenly appear again ( I hope not ).

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tomcat59alan said:

Where did you get the replacement seal kit from?

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Neil.ms said:

Got them a few years ago from a guy in Australia ( strange but true ). I will try to find his details

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Datatek said:

Probably the same guy who did the replacement valve parts.

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pete12345 said:

What were the new seals for

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Neil.ms said:

The seals ( perhaps I should have used the words O rings? ) are to seal various parts of the abs piston.

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tomcat59alan said:

I knew what you meant

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pete12345 said:

Well I won’t be doing that any time soon I’ve you were surprised how complex it was will give that a swerve

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