P38A Brake bleed, vacuum type pump
- Thread starter Zorro587
- Start date
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- Posts
- 58,170
- Location
- Preston Lancs.
Bleed only according to RAVE.
- Posts
- 3,877
- Location
- Near Heathrow.
+1 . . . vacuum doesn't work. You need an assistant to operate the brake pedal & ignition, which you open & close the bleed valves.
However vacuum is really useful for initially filling new pipes with fluid before bleeding. Also helps if your replacing old fluid . . . . suck until you get the old crap right out.
However vacuum is really useful for initially filling new pipes with fluid before bleeding. Also helps if your replacing old fluid . . . . suck until you get the old crap right out.
- Posts
- 58,170
- Location
- Preston Lancs.
Thanks both. Don't know what my dad thinks he's doing this morning, but he's wrong
The front brakes are bled first hydrostatically after depressurising the system with NO pressure in the accumulator. The rear brakes CANNOT be bled unless there is pressure in the system. Follow the instructions in RAVE.
