Ausi Neil

Mine was gushing oil out around the pinion when brake appled. There should be no high pressure oil there. I had high pressure oil escaping across the face of the oil pump gears into the low pressure side. I had about 1mm gap between pinion and housing which I believe should be a lot smaller. The housing has a sleeve pressed in with an oil slinger thread cut into it. Any low pressure oil that makes its way there is supposed to be returned by the thread(slinger) and there is a gallery with a drain hole back into the transmission resorvoir. I had my housing machined out and pinion turned down and fitted two SKF 16054 seals. Problem solved. They are certainly a different brake. You only have front brakes when the tailshaft is turning which improve with speed. The rear brakes operate at all times the pedal is depressed.

Hi there i live i Wagga Wagga NSW. Where are you? My email is meander24@bigpond.com I have sorted out the brake problem. It was a matter of having the correct clearance at the oil pump gear face and machining the pinion and housing and fitting modern seals. I have just club registered the car and am working on fine tuning. Regards Neil

Hi everyone. I am a newbe at forum use. I am restoring a 1925 ER Studebaker Standard Six in Australia. I have the same problem with oil leaking from the tailshaft/park brake pinion. Someone had reassembled the hydraulic oil pump and pushed the woodruff key out of the key way when sliding the gear onto the gearbox output shaft. I have repaired this and have set the pressure to 70lb. The brake assistance is now working but oil floods out the gap between pinion and housing. Was there originally packing in this gap? Regards Neil