TM 5-3895-383-24
Shift Valve
SMCS Code: 4356
Part No.: 148-5608
Illustration 34
Schematic For Shift Valve
(1) Shift Valve. (2) Line to axle motor. (3) Line to drum drive
motor. (4) Charge oil line. (5) Line to hydraulic oil tank.
Illustration 35
Shift Valve
(1) Shift valve.
Illustration 36
Steering Console
(6) Propel Speed Range Control.
Shift valve (1) is a solenoid operated valve with two positions.
The shift valve controls the operation of the speed shift
mechanism in the drum propel motor and the axle propel
motor. When the propel speed range control (6) is in the LOW
SPEED position, the speed shift solenoid is not energized.
The shift valve in this position connects lines (2) and (3) to line
(5). This allows oil from the shift valves in the propel motors to
go to the hydraulic oil tank. The propel motors are now at the
maximum displacement position (LOW SPEED). When the
propel speed range control (6) is in the HIGH SPEED position,
the speed shift solenoid is energized. The shift valve in this
position connects lines (2) and (3) to line (4). This allows
charge oil from the steering pump to go to the control pistons in
the drum propel motor and the axle propel motor. The propel
motors are now at the minimum displacement position (HIGH
SPEED).
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