P A R 5 4
T O R Q U E P A T HS
C H A P 2, SEC V
Figure 30. Second-gear, full-left-steer torque path, lockup operation
54. TORQUE PATH
-
SECOND GEAR,
FULL - LEFT STEER, LOCKUP
OPERATION (fig. 30)
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 er
planetary ring gears in the same manner as
t h a t f o r f i r s t g e a r , a s d e s c r i b e d i n p a r . 4 7a
a n d b , above. From this point, to the power
train outputs, the torque paths for the right
and left sides are different.
b . T h e c l u t c h - b r a k e m e t h o d i s u s e d f or
s e c o n 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 n g
results when the brake is applied at one side
while the drive clutch is engaged at the opposite
side. In second gear, the drive clutch is the
output clutch.
The vehicle steers toward the
side on which the brake is applied.
c . In left steer, in second gear, the left
brake is applied while the left-output clutch
i s r e l e a s e d.
The drive clutch (output clutch)
on the right side is still engaged and continues
to drive.
Hydraulic action, controlled by the
steer control valve, releases the drive clutch
and applies the brake. An opposite movement
o f t h e s t e e r c o n t r o l v a l v e w i l l r e l e a s e t he
right-output clutch, apply the right brake, and
result in right steer.
d . Full and partial steer in second gear
is controlled as explained in par. 53d, above.
R e f e r t o T A B U L A T E D D A T A , p a r . 7 , f or
g e a r r a t i o s a p p l i c a b l e t o s e c o n d g e a r , l e ft
s t e e r.
5
7
|
|