4 Cylinder Car Brake Servo Rebuild

PNP

Member
My car has a common (here in Aust) aftermarket PBR brake servo fitted. Keen to go back to an original Lockheed unit. I've sourced one. Are these usually rebuildable. I note that the kits are available from the usual suppliers (Wins, Whadhams ECT) .
 

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Repair kits are available.. but it's all down to the condition of the bore. If you can get it rebored locally, it'll be worth it.
 
Is that a VH44 copy servo? I'm struggling to find an original here in NZ so through I might put one of these on. Was it no good?
 
Not sure if its a 44 or a 40. Be careful - the cheap 44 copies are almost certainly Chinese, and you are gambling on getting one that has the correct internal bores - the slave cylinder came in several sizes depending on application, and the wrong one can give you a strange feeling pedal. A good brake place should be able to overbore and fit a stainless sleeve.
 

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Fairly sure mine (photo above) is an original PRR VH40. Seems to work OK but I do not have anything to compare it to.
 
That's Paton's Brake Replacements, PBR. If it stops well, and the pedal is easy to modulate to get the desired braking, its good. worst brakes I ever experienced were on a Volvo 244 - slight speed checks were OK, but the next pressure step produced a panic stop. All I could think was overly soft pads.
 
Thankfully the brake experts in town have managed to source all the seals by ringing around New Zealand. Should have a rebuilt original servo in a few days. Hooray.
 
With most hydraulic cups and seals ( PBR anyway) the sizes are moulded on the inside (just visible in the pic),so if you can read them on an old cup you should be able to source a replacement. Even the annular seals I have seen have sizes in the grooved area.
KvD4Teb.jpg
 
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