Winnebago 1987-1989 LeSharo Service Manual page 267

GENERAL INFORMATION
PRINCIPLES OF OPERATION
THE HYDRAULIC CONTROL UNITS
- The Fluid Pump lubricates and feeds the converter and ensures operation of brakes and clutches (line
pressure)
- The Hydraulic Distributor (valve body) supplies the components in question depending on the engine
conditions (load, speed) by means of valves whose positions are controlled hydraulically by solenoid
valves known as solenoid pilot valves.
FLUID PUMP
MANUALLY OPERATED
VALVE
VACUUM CAPSULE
~
HYDRAULIC
CONTROL
UNIT
(VALVE BODY)
SOLENOID PILOT
VALVES
F2
CLUTCHES
THE ELECTRICAL CONTROL UNITS
Their purpose is to decide when to change gear and to control the gear change.
To do this, they trigger the activation of the solenoid pilot valves and thus control the hydraulic distributor
valve movements which result in the changes in speed.
F1-15