C H A P 2, SEC V
T O R Q U E P A T HS
P A R 5 5
55.
Figure 31.
Third-gear, full-right-steer torque path, converter operation
TORQUE PATH
-
THIRD GEAR,
FULL-RIGHT STEER, CONVERTER
OPERATION (fig. 31)
a . T o r q u e i s t r a n s m i t t e d t o t h e s t e e r
planetary ring gears in the same manner as
d e s c r i b e d i n p a r . 4 9 a a n d b , a b o v e . F r om
t h i s p o i n t , t o t h e p o w e r t r a i n o u t p u t s , t he
torque paths for the right and left sides are
d i f f e r e n t.
b . T h e g e a r e d s t e e r m e t h o d i s u s e d f or
t h i r d - g e a r s t e e r . I n t h i s m e t h o d , s t e e r i ng
r e s u l t s w h e n t h e g e a r e d s t e e r c l u t c h i s e n-
gaged at one side while the drive clutch (out-
put clutch) is applied at the opposite side. The
vehicle steers toward the side on which the
geared steer clutch is engaged.
c . In right steer, in third gear, the right-
geared steer clutch is applied while the right-
output clutch is released. The drive clutch on
the left side is still engaged and continues to
d r i v e .
H y d r a u l i c a c t i o n , c o n t r o l l e d b y t h e
steer control valve, releases the drive clutch
and applies the geared steer clutch. An op-
posite movement of the steer control valve will
release the left-output clutch, engage the left-
geared steer clutch, and result in left steer.
d . In full steer, the applied geared steer
c l u t c h l o c k s t h e g e a r e d s t e e r p l a n e t a r y s un
g e a r a n d s l o w s t h e g e a r e d s t e e r p l a n e t a ry
c a r r i e r . I n p a r t i a l s t e e r , t h e g e a r e d s t e er
clutch is only partially applied and slows the
output to a lesser degree. The degree of steer
is controlled by the degree of movement of the
s t e e r c o n t r o l . R e f e r t o T A B U L A T E D D A T A,
par. 7, for the gear ratios applicable to third
g e a r , r i g h t s t e e r .
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