P38A Brake accumulator

pete12345 · Nov 17, 2021

Just replaced my accumulator now when I turn on ignition the pump runs for about 10 seconds after 6 press on pedal comes back on again does this sound about right thanks for advice what I’ve noticed is there’s a clicking sound at the brake pedal not every time though

kermit_rr · Nov 17, 2021

is that 6 light presses, or firm ones? Typically its 4 presses with a new accumulator

kermit_rr · Nov 17, 2021

its not this kind of click, is it?

pete12345 · Nov 17, 2021

It sounds a bit like that but from the pedal not the engine side

pete12345 · Nov 17, 2021

Will count the presses again wasn’t the keenest in the maths class but should be able to get to 4/6 cheers

kermit_rr · Nov 17, 2021

pete12345 said:
It sounds a bit like that but from the pedal not the engine side

i thought it was pedal side too, but was coming from the brake unit.. replaced and the noise went away :/

pete12345 · Nov 17, 2021

Just did count properly 20 seconds ignition on brake light 3 times on again 5 seconds

pete12345 · Nov 17, 2021

Will check that in engine tomorrow just to make sure thanks Kermit rr

kermit_rr · Nov 17, 2021

pete12345 said:
Will check that in engine tomorrow just to make sure thanks Kermit rr

in my case, i got someone else to push the pedal and I could clearly feel it through one of the brake pipes, think it was the one that went down to the reduction valve underneath the coolant expansion tank

Datatek · Nov 17, 2021

The return spring on the brake pedal started to click on mine, a quick spray of 3 in 1 cured it.
4 hard presses of the pedal before the pump runs again is about normal.

pete12345 · Nov 17, 2021

What was wrong with the pipe then to make that noise did you ever discover

pete12345 · Nov 17, 2021

What did you replace the whole unit or just the reduction valve thingy you mentioned

kermit_rr · Nov 17, 2021

It is something internal to the modulator that is making the noise for me, the pipe was just a conduit. I'll eventually strip it down to see what has happened. I replaced the whole unit with a used one off eBay, the reduction valve seems to work fine

pete12345 · Nov 17, 2021

Ok cheers will ch

pete12345 · Nov 17, 2021

Poxy thing cut me off short was saying I will check it out tomorrow thanks again

pete12345 · Nov 18, 2021

Did check this morning definitely coming from pedal not modulator and checked with nanocom test all valves operating properly so will find return spring data posted and spray that

P38A Brake accumulator

pete12345

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kermit_rr

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kermit_rr

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pete12345

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pete12345

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kermit_rr

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pete12345

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pete12345

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kermit_rr

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Datatek

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pete12345

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pete12345

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kermit_rr

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pete12345

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pete12345

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pete12345

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