XJ ABS Teeves Mk ii Hydraulic Actuator

[enjoyingtheride]

Help (UK based) - can anyone point me in the direction of a company that rebuilds these ? They were fitted to a large variety of vehicles in the late 80's early 90's, in my case a Jaguar XJS but also Passat and a variety of American Fords etc.

Current situation is brakes were working fine after taking car out of storage. However I fitted new pads but just shoved the pistons back rather than open the bleed nipples to let the displaced fluid exit the system, which is the approved method. Within a 3 mile drive the brakes suddenly stopped working. There are 7 hydraulic solenoid valves. When powering them up externally, 6 click and one takes current but does not move. So I think I have one outlet valve wedged open with debris from the fluid I shoved back. the Workshop Manual warns that the actuator is sensitive to debris which is the justification they give for the "open the bleed nipple" story when fitting new pads. A new actuator is a stonking £1,700.

I am going to try a strip and clean of it today. Are normal O rings compatible with Dot 4 fluid ? There are bound to be some between the halves of the aluminium housing. (I have also posted in brakes to see if I can pick up some info from other marques as well.

[Hooli]

enjoyingtheride said:

I am going to try a strip and clean of it today. Are normal O rings compatible with Dot 4 fluid ?

I used a normal cheap O-ring to replace one I lost rebuilding bike brakes, it's still fine about four years later.