141
1
2
3
4 4
4
21
22
23
3
1
57
57
58
Solenoid valve
blocks - 6x2 or
8x2 - ignition off
Note: Illustration
spread across 2
pages
Note that, with ignition off, air cannot pass through any
valve.
So, on Gen. 2 system, when the ignition is switched off, the
lifting axle does not drop down.
PORT NUMBERS
1. Air supply from wet tank
3. Exhaust
21. To LH/RH
trailing/pusher bellows
22. To lift axle bellows
23. Plugged
Y29
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