Tridem - Volvo FM Handbook

Tridem

Raise the axle
Depress the upper part of the switch.
The bogie lamp for the Tridem-axle lights up.
If the load on the other axles becomes excessive, the
axle will not lift.
If the axle lifts, the rear part of the vehicle will be
raised by 45 mm.
If the axle is lifted and the vehicle is loaded so that the
pressure on the bogie becomes excessive, the Tridem-
axle will be lowered automatically.
Lower the axle
Put the switch in the middle position.
The bogie lamp for the Tridem-axle goes out.
The load is distributed so that both driving axles
receive equal load. The third axle will receive
sufficient load to make the vehicle as easy to drive as
possible.
Driving 165
Bogie lamp for Tridem-axle
J7008416
J3014469
J7008420