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V90 brake booster replace -- remove master cylinder? S90-V90

posted by  cooltouch on  Fri Aug 22 12:03 CST 2014
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last visit: Wed Sep 3 10:40 CST 2014
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I've never replaced a Volvo brake booster before, and whenever I have to tackle something new to me, I like to check in here first, read the FAQ, and search the messages. Unfortunately I'm not finding what I need. So here goes: the car is a 98 V90. It has a bad brake booster. I've got the old one loose but can't get it out of the engine compartment. It looks to me like I'm gonna have to remove the master cylinder to get it out and put the new one in. So I'm gonna have to break loose the brake lines, which will allow air to enter the system. There is a bleed fitting at the end of the master cylinder, which I assume I'll have to use, but I'm concerned that air will be in the system below that point. Does this mean I'll have to bleed the entire system? I had a 240 that had a specific bleed order one had to follow so I'm wondering if this V90 will require a similar sort of sequence. If this info is in the FAQ, I must have missed it.

Any tips and suggestions you'd care to offer will be greatly appreciated.






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