TM 5-3805-280-24-1
Theory of Operation
drive shaft (G). As the angle is changed the motor
The propel motor (S) is a variable-displacement,
displacement changes which changes propel motor
bent-axis, axial-piston type motor that includes the
speed.
brake valve housing and propel park brake. The
counterbalance valve, crossover relief valves, park
Supply oil flows through the valve plate (B) to half of
brake release shuttle valve, pressure reducing valve,
the pistons (M) in the rotor (N). The oil forces the
servo piston shuttle valve, and the servo piston (O) are
pistons to slide down the cylinder block bores
integral components of the brake valve housing. The
transferring the force to the drive shaft (G) turning the
speed selector valve spool is located in the servo
drive shaft. As the cylinder block and drive shaft rotate,
piston.
half of the pistons move out of their bores while the
remaining pistons in the other half of the cylinder block
The servo piston (O) controls the angle of rotor (N),
move back in their bores to discharge oil to return.
pistons (M) and center shaft (E) with respect to the
TX,05,GG2167
1920MAY982/2
9025
05
73
6-69
