Toyota 2.2 Diesel Brake Servo Pump - SERVTEC
Can anyone help. I have a Toyota 2.2 Turbo Diesel Town Ace 1995 import. There is no brake servo assistance until I have driven for about 2 miles. The servo is not leaking so I suspect the vacuum pump. Can anyone offer me advice on how to overhaul this unit. Thanks KELVIN
Toyota 2.2 Diesel Brake Servo Pump - DL
It's most probably a servo pump mounted on the alternator - which is going to be tricky to repair. You will (I think) struggle to obtain any repair parts for it.

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Toyota 2.2 Diesel Brake Servo Pump - SERVTEC
Thaks DL. The pump is mounted on the rocker cover and I think is powered off the Cam chaft.
 

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