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SYSTEMS OPERATtON
Let us see the paths of power flow in the trans
mission in forward 1st speed positioi~ and in
reverse position.
Friction plates 15 are engaged with the external
splines of ring gear 10 and mating plates 14 with
the internal splines of housing 12. "To engage
the clutch" is to admit the pressure oil from the
control valve into the piston chamber of housing
12. By the admitted oil, piston 13 pushes the
stack of the friction and mating plates to hold
them together. "To disengage the clutch" is to
relief this pressure. When the pressure is removed
from the piston, return springs 16 push the piston
back to loosen the stack of the plates.
In forward 1st speed position, forward clutch 2
and 1st-speed clutch 5 are engaged. Because
forward ring gear lOis locked, power from input
shaft 6 flows to carrier. 11 through sun gear 8.
From this carrier 11, the power flows to the sun
gear of 1st-speed clutch through carrier and then
to output shaft 7.
In reverse position, reverse clutch 1 is engaged.
In this case, the reverse carrier is locked, and the
reverse sun gear
and ring gear rotate in reverse
direction. The flow of pOwer from this ring gear
is similar to that in forward 1st speed drive.
~jj
L~ ~
~ jj' ~
IiiI~~~1
Reverse 2nd speed position
602316
602313
602314
I"_~~
1iff~
jf~L~
~
~
OT
From the output shaft,~ power flows through
single-stage-reduction transfer gear to the bevel
pinion.
~n1II9~
~
~ir
T~
Reverse 1st
speed position
602315
21~
0
[~1,P~1~
1T1J~~1~
0
OVr~QO~Y
~T
~2V2.
_
r
A
~.
Reverse 3rd
speed
position
19
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