Thread: Maxi Lockers Plumbing

You're not planning to get your hands dirty this week end are you?

The reason for the tank is that if you put your foot down with the diff locked, vacuum will diminish and the locker may unlock at the most inconvenient time.

Regards Philip A

Originally Posted by PhilipA

The reason for the tank is that if you put your foot down with the diff locked, vacuum will diminish and the locker may unlock at the most inconvenient time.

Regards Philip A

You may be thinking ARB lockers where the locking dog is spring loaded.

AFAIK, the you need a vacuum supply in order to change the state of the Maxidrive locker (engaged to disengaged and vice versa). The actuator is a double acting pneumatic rod, and requires the vacuum to be "switched" to the other side of the piston to disengage.
Losing vacuum will not unlock a locked diff, but means you won't be able to change its state once the vacuum is lost.


To answer the OP's initial question, the canister does two things; smooths any pressure fluctuations in the vacuum line and accumulates vacuum in a "storage tank". I'm only guessing here, but it may be required to engage the locker "in one go" rather than gradually, somewhat like pumping up a tyre from an air tank Vs direct from a compressor. The plenum chamber of your V8 may be acting as a storage tank however so it may not be required(?).

Anyone know if Mal installed vacuum tanks on petrol powered landies? (I don't imagine he would have gone through the trouble if they weren't required).

HTH

Bojan

It will be fine. It's just a vac tank to allow operation once the engine is off

Anyone know if Mal installed vacuum tanks on petrol powered landies? (I don't imagine he would have gone through the trouble if they weren't required).

Yes, my RRC has one, and I was going to post that he wouldn't have included it in the kit unless it was necessary as it adds several connections.
Regards Philip A

Originally Posted by PhilipA

Yes, my RRC has one, and I was going to post that he wouldn't have included it in the kit unless it was necessary as it adds several connections.
Regards Philip A

I've fitted 3 without tanks, operation was fine

Thanks for the replies. It was also suggested to plumb it directly to the plenum using the hose at the front drivers side - which I believe on some models is for the cruise control, but with mine I think its to do with controlling the heater etc under the dash as I don't have cruise control. However, as it all appears to be working where it is I think I'll leave it alone.

I had it tuned on Friday and figures/performance were back to where I believe they should be. Hopefully it might have also resolved the fuel consumption issues but will have to wait and see on that one.