Quantcast Figure 24-7. Power Flow through Cross-Drive Transmission during Left Steering in Neutral Range

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TM 9-8000
Figure 24-7. Power Flow through Cross-Drive Transmission during Left Steering in Neutral Range
compartment. When the valve Is shifted, various ports
power flow through the transmission Is as shown In
are uncovered so that oil pressure Is admitted, through
figure 24-4. Note that the low-range line also is
the oil lines, to the different clutches. Oil pressure cannot
connected to a low-range accumulator (through line 19).
be directed to more than one clutch at a time. In neutral,
The accumulator Is a spring-loaded piston In a cylinder.
oil pressure Is cut off from the low-range clutch, high-
The piston moves to compress the spring as oil pressure
range clutch, and reverse-range clutch so that there is no
Is admitted into the low-range clutch line. This provides a
drive to the output ring gears. However, steering In
cushioning effect and softens the engagement of the
neutral range can be accomplished by operation of the
low-range clutch, thereby preventing a sudden and jolting
steering valves as described below
shift.
.
c. Low Range (Fig. 24-10). When the range- control
d. High Range (Fig. 24-10). When  the range-
valve is shifted to low range, oil pressure is admitted to
control valve is shifted to high range, oil pressure is
the low-range clutch (through line 18). Oil pressure Is cut
admitted to the high-range clutch (through line 17). Oil
off from the other range clutches. The low-range clutch
pressure is cut off from the other range clutches. The
engages and the
high-range clutch therefore engages, and the power flow
through the transmission is as shown in figure 24-5.
TA233732
24-11


 


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