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7
Electrical 579 Family
Peterbilt Motors Company 7-14
Lift Axles (Pushers & Tag)
Truck Lift Axles
All truck lift axles (pushers and tag), are direct wire Electric-Only from the switch to the axle mounted solenoid. This is not
from the EoA Solenoid Bank. There are a total of four lift axle controls available; 3 pushers and 1 tag axle. These are
controlled with separate switches by default.
The customer can order the following configurations; steerable, non-steerable, with auto-reverse, and with park brake
interlock. A lift axle comes with a control switch (single or separate), a gauge, and a regulator valve.
FIGURE 7-19. Truck Lift Axles (Separate Switches)
FIGURE 7-20. Truck Lift Axles (Single Switch)