Mec 4069RT - Hydraulic Roadmap

“4069RT” Service and Parts ManualMarch 2014
Page 1-4
HYDRAULIC SYSTEM – GENERAL
H YDRAULIC R OADMAP
H YDRAULIC R ESERVOIR
Hydraulic fluid is held in the reservoir for delivery to the various components and then
returned to the reservoir. Returning hydraulic fluid is routed through a filter before
entering the reservoir. The reservoir also serves as the oil cooling device.
P UMP
The pump delivers hydraulic fluid under pressure to the Functions Manifold.
F UNCTIONS M ANIFOLD
The Functions Manifold directs the hydraulic fluid to the hydraulically operated
components and returns fluid to the reservoir through the use of electronically operated
solenoid valves.
D RIVE AND B RAKE S YSTEM
There are four (4) hydraulic gear wheel motors that provide power to all four wheels.
All wheel motors have integral spring-held brakes. The brakes are released by
hydraulic pressure developed in the drive circuit when the drive functions is in use. A
fixed orifice in the brake circuit controls the deceleration rate and initiates a smooth
stop.
S TEERING S YSTEM
Two (2) hydraulic cylinders control steering.
P LATFORM L IFT S YSTEM
The machine is equipped with two (2) hydraulic lift cylinder.
O UTRIGGER S YSTEM
On machines equipped with outriggers, four outrigger cylinders level the machine on
uneven ground.