Can I bleed the brake booster? '90 200q

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Old 01-15-2006, 11:27 AM
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Default Can I bleed the brake booster? '90 200q

I've blown the same O-ring on my hydraulic pump several times, this time I seem to have lost brake boost after repairing & refilling. The reservoir ran empty, but it's done this before without this problem. I'm guessing air in the line somewhere between the pump, bomb, and boost. I see the line from the boost to the reservoir, is there flow or some passing of fluid as the brake is used? If so, I suspect it'll work it's way out if I run it a bit. The bomb has been dead for at least 200k, I don't think that'll be the problem.
Old 01-15-2006, 01:38 PM
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Default I have pump seal kit from Holland Imports minus two seals, that didn't work for my car....

I suspect that it was for the 5000/200 pump. You can have that if needed, also if you need some help bleeding it I can stop by tomorrow night.

Jim Bush
Holland, MI
Old 01-15-2006, 06:06 PM
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Default Thanks Jim, I'm hoping it's just air in the system, steering feels normal.

Unless there are seperate loops for steering & brake?
Old 01-16-2006, 09:57 AM
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Default The hydraulic system is self-bleeding.

If the system ran dry, then the booster may be compromised, as it uses the Pentosin to lubricate all the moving parts.
Old 01-17-2006, 02:43 AM
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Default Yes! It seems to have recovered, what a great car!

My Viton O-rings should arrive this morning, I hate to open it up again, but it will only take a few minutes.
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