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ABS pump repair
https://forums.tipec.net/viewtopic.php?f=25&t=22747
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Author:  Endoman [ Sun Jun 25, 2017 1:40 pm ]
Post subject:  ABS pump repair

ABS not working, no warning light. According to an excellent post ref 968 pump repair it's stuck pistons.ref :-http://www.porsche968uk.co.uk/technical_tips/968-abs-refurb.php
I stripped a spare down perloined from a mate and found exactly that, so I presume mine is the same. Found a Merc one on ebay which uses the same pistons so will try those. The daunting bit is removing the brake lines from the old pump as from previous experience they will be fused solid and that will mean replacing the complete brake lines to the ABS pump. Has anyone done this and any lubrication ideas to prevent it happening again?
Just noticed it's a Waylander post :)

Author:  Endoman [ Sun Jun 25, 2017 5:45 pm ]
Post subject:  Re: ABS pump repair

After a struggle got the pump out and stripped it. What a mess, the little pistons were totally seized up. The spare in much better condition and one piston was free one only slightly stuck. All brake lines intact,worst part was the earth contact on the motor which sheared off.

Author:  Waylander [ Sun Jun 25, 2017 8:49 pm ]
Post subject:  Re: ABS pump repair

Fun is it not

The end of the motor and the eccentric bearing plus the pistons were just a ball of rust in mine

The 10mm Allen grub screws can be a challenge too

Author:  Greggers [ Mon Jun 26, 2017 4:31 pm ]
Post subject:  Re: ABS pump repair

I'll do mine when I next get the wings off ...

Author:  Endoman [ Tue Jun 27, 2017 10:43 am ]
Post subject:  Re: ABS pump repair

All back together and working :) Took 1.5 litres of fluid to get all the air out with pressure bleeder and a duel line reservoir. It's a very fiddly job getting the brake lines back in also fitted a M030 rear proportioning valve to go with the M030 front brakes. I may need to fit an ABS reset switch now as this will be the first time in 5yrs that the abs is working and I'm not sure what will happen on track.

Author:  Waylander [ Wed Jun 28, 2017 4:57 pm ]
Post subject:  Re: ABS pump repair

glad its sorted, better than the 2K Porsche want for one exchange

Author:  blackadder30 [ Wed Jun 28, 2017 9:10 pm ]
Post subject:  Re: ABS pump repair

Great work Endoman! That's certainly a challenging refurb. Glad it's sorted :D

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