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PV, 120 (Amazon), 1800 General Forum for the Volvo PV, 120 and 1800 cars |
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B20 Amazon Twin Circuit - Front Brakes BindingViews : 1906 Replies : 11Users Viewing This Thread : |
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Jul 20th, 2022, 22:18 | #11 |
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Last Online: Yesterday 22:31
Join Date: Jul 2007
Location: Connecticut, USA
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SS;
Maybe I missed it when I scanned the thread, but if you state "switched on the engine and the pedal then drops by 3/4 inch or so" that suggests a Vac Brk Booster, so if Master Cyl has been replaced and this is a tandem Vac Brk Booster, the clearances need to be checked so that there is free travel in the Actuation Rod, otherwise the Brake Sys could be supplying residual pressure. See also: https://www.sw-em.com/1800E_Brake_Lo..._Free-Play.htm "deteriorating brake warning valve" I fail to see how this fairly static plumbing item can deteriorate...I further don't see how this can lead to the reported symptoms. When bleeding the Brakes however, it is highly advisable to remove the contact part from the Housing, to prevent its plastic pin from being sheared and damaged during bleeding process. See: https://www.sw-em.com/Two_Wrongs_Mak...g_Valve_Switch Good Hunting! |
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Apr 9th, 2023, 12:05 | #12 |
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Last Online: May 29th, 2024 10:47
Join Date: Dec 2007
Location: Chichester
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Update - The brake binding issue has now been resolved. There was a problem with the Scandix Servo which has now been replaced with a new Servo. The braking has now significantly improved and the car freewheels easily. However, I still have a growling/squealing noise which relates to wheel rather than engine speed. The noise is more noticeable from cold and reduces after a few miles and then becomes intermittent. One of the wheel bearings has already been replaced and I'm going to do the other as my car has been used fore rallying in the past. I may have to put the car on a rolling road to try to get to the bottom of it as it's difficult to pinpoint from inside the car......
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