Winnebago 1987-1989 LeSharo Service Manual page 266

GENERAL INFORMATION
PRINCIPLES OF OPERATION
THE EPICYCLICGEAR TRAINS
1 • DEFINITION
This is a set of internal and external helically cut
gears. They can provide different reduction ratios
depending on the manner in which they are
activated. The gears are always in mesh.
2 • DESCRIPTION
A "SINGLE" EPICYCLICGEAR TRAIN contains:
- a SUNWHEEL P with external teeth
- a number of planet wheels S
- a planet wheel carrier PS
- a ring C, with internal teeth.
This type of gear train can provide a number of ratios. Only TWO of the gear components need to be used to
obtain each reduction.
c
PS
P
S
I
The Mechanical Control Units
To activate TWO units in the EPICYCLIC GEAR TRAIN,
multi-disc oil bath type hydraulic receivers are used.
- The movement input component is driven by a
Clutch "E1" or "E2"
- The reactive component is locked by a Brake "F1"
. or "F2."
They are controlled by the HYDRAUL1C CONTROL
UNITS.
F1-14
; •. J
j
I
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