(4) Cylinder barrel. (9) Spring. (17) Cup. (18) Shim.
Spring (9) and shims (18) are held in place on the swashplate
(8) by the cup (17). Spring force holds the face of the barrel
(4) against the port plate (7) and the head (15).
The length of the stroke of pistons (10) is changed when the
swashplate (8) is rotated about the axis. In a neutral position,
the piston stroke is 15 and the oil delivery is zero. When the
piston is at a maximum inclination, the stroke is at the
Relief Valve (Main)
SMCS Code: 5051; 5069
The main relief valve (1) is a cartridge type valve. The main
relief valve provides two functions for the vibratory circuit
The main relief valve limits the pressure.
The main relief valve acts as a makeup valve for the
main loop circuit.
The maximum pressure of each loop line of the closed circuit is
limited by the main relief valves to 35000 kPa (5076 psi). The
pressure is above the low pressure side of the main loop
Main Relief Function
Relief Valve Cross Section
(1) Main relief valve. (2) Locking cap. (3) Conical spring. (4)
Collar. (5) Spindle. (6) Spring. (7) Collar.