Vacuum storage tank

[BMac]

The spherical vacumm tank in my Isuzu County only has one hose connected, but two connections ( holes ) and the unplugged hole is letting air in. Is it supposed to be like this, or am I missing a hose for something.

The brakes seem fine, so the pump is at least faster than the leak. The workshop manual mentions the existance of a tank, but that's all.

Any help appreciated.

Bruce.

[PhilipA]

NO , any hole should be plugged.
Did the car have aircon at some time? the driver for a flap motor is usually what comes off the sphere .
regards Philip A

[PhilipA]

OoooR, thinking back a looooong way the V8 used to have a hot air flap on the air intake to divert air from over the exhaust manifold for warm up.
Seeing you talk of a vacuum pump , I assume yours is diesel, but maybe long ago it had one also.
Regard sPhilip A

[Tusker]

The brakes are often ok with a leak, for a single application. Pump the pedal while idling, see if you use up the vacuum.

Regards
Max P

[BMac]

Bingo on the AirCon Philip. It probably worked at some point in its life, but not now :-(

I'll plug the hole and see if the brakes are better, cos thinking back, there were times when the peddle was harder than normal :)

Thanks heaps for the help guys.

Bruce.