1971 Volvo 1800e rear brake "dampeners"
Have a 1971 Volvo 1800E and am doing a complete brake job. The car doesn't have many miles, but the rear bleeders seem to dribble. Replaced a sticking left rear caliper, the master cylinder, the two rear flex lines and am wondering about those two cylindrical shaped "dampeners" which are located by the rear axle and seem to serve as a junction between metal & flex lines. Have been told they are a sort of early anti-lock mechanical thingy, but don't really know.
Seems the rear brakes haven't been working properly and am wondering if those two "dampeners" could get "stuck" from disuse.
Anyone know anything about them, how to check, adjust, tear down, repair, etc?
Thanks in advance.