TM 9-2330-390-14&P
1-21. HYDRAULIC SYSTEM.
a.
The hydraulic system maneuvers the front and rear dolly top and bottom beams into a series of positions
so that a shelter can be attached and lifted to riding height. Once towed to its destination, the hydraulic system lowers
the shelter to the ground.
b.
Each dolly half has its own independent hydraulic system.
c.
Power to operate the hydraulic system comes from the engine and hydraulic pump.
d.
The hydraulic system is configured to accommodate a redundant power kit option. If either the front or
rear dolly has engine or hydraulic pump failure, the other dolly half can operate both the front and rear hydraulic
systems using the engine and hydraulic pump of the functioning dolly half and the redundant power kit (see
paragraph 2-34).
e.
Major components of the hydraulic system include the following:
Key
Component
Description
1
Positioning Cylinders
Extend or retract to position top and bottom beams at shelters of
varying dimensions. Housed inside top and bottom beam
telescoping vertical tubes.
2
Lift Cylinders
Extend or retract to lift or lower shelter.
1-39
