Rear brakes problem!
Post Fiend
Joined: Apr 2005
Posts: 5,720
Likes: 5
From: Washington state
Pablo,
Aeros prior to 1990 did NOT have RABS, so there is NO controller or special solenoid RABS valve
your valve in photo is your proportioning valve....there is a shuttle piston inside with a strong spring in that screw on end cap....end cap has a small rubber plug in a hole in the end
spring and rubber plug like to fly off when removing
valve probably plugged with water, line rust and general road crud.....
remove and clean
if there is any corrosion on piston surface, replace unit
line out bottom runs to back brakes
can replace with proportioning valve off another vehicle as long as fittings are correct, can replace fittings
easiest is to find '80s Ranger, F150, Explorer, Bronco but they will probably be corroded also
Aeros prior to 1990 did NOT have RABS, so there is NO controller or special solenoid RABS valve
your valve in photo is your proportioning valve....there is a shuttle piston inside with a strong spring in that screw on end cap....end cap has a small rubber plug in a hole in the end
spring and rubber plug like to fly off when removing
valve probably plugged with water, line rust and general road crud.....
remove and clean
if there is any corrosion on piston surface, replace unit
line out bottom runs to back brakes
can replace with proportioning valve off another vehicle as long as fittings are correct, can replace fittings
easiest is to find '80s Ranger, F150, Explorer, Bronco but they will probably be corroded also
Elder User
Joined: Aug 2005
Posts: 996
Likes: 0
That looks right to me too. Aren't these valves calibrated for each class of vehicle though. My experience is that these valves do not last well and are not a good salvage yard item. My thought is to replace with new. the adjustable valve is still a viable option. I think they are available is sverdlosk or somewhere in Kamchatka.
Ken
Ken
Lead Driver
Joined: Sep 2003
Posts: 7,013
Likes: 205
From: SoCal
Originally Posted by Pablo-UA
There is a valve on all the russian cars. It is on body near rear axe and connected to it by metal arm. I can see no valve on my aero!
Elder User
Joined: Aug 2005
Posts: 996
Likes: 0
Pablo,
If you got it apart and is cleanable/fixable, there should be nothing wrong with installing the original, correct spring.
Ken
If you got it apart and is cleanable/fixable, there should be nothing wrong with installing the original, correct spring.
Ken
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Post Fiend
Joined: Apr 2005
Posts: 5,720
Likes: 5
From: Washington state
rust, corrosion on piston and chamber or water mix hairball brake fluid stew cause most of the problems in proportioning valves....prevent or impede travel of piston controlling pressure/fluid flow to back brakes
can try stretching spring 0.25 cm to start
can try stretching spring 0.25 cm to start
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