TM-9-2520-254-34
TRANSMISSION, AUTOMATIC, ALLISON, MODEL TX100-1
TECHNICAL MAUAL; DIRECT AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1971
TM-9-2520-254-34 - Page 30 of 126
(2) The rear oil pump rotates in the reverse
direction and allows a small volume of oil to return
to the sump. This oil must come through the orifice
connecting the front and rear oil pump output lines.
Oil passing through this same orifice keeps the rear
fluid velocity governor supplied.
b. Converter-In Circuit
(yellow—fig. 2-8). In
reverse-range operation,
the converter-in circuit
functions as described in paragraph 2-14b.
c. Front Governor (Gl) Circuit
(blue, black—
fig. 2-8). In reverse-range operation, the front
governor
circuit functions as described in
paragraph 2-14
c.
d.
Reverse-Range Clutch Circuit
(blue, red—fig.
2-8). The reverse-range clutch circuit is supplied, at
the manual selector valve, by main pressure.
e. Throttle Valve (TV) Circuit
(blue, yellow—
fig. 2-8). In reverse-range operation, the throttle
valve (TV) circuit functions as described in
paragraph 2-15f.
2-20. Hydraulic System—High-Range Oper-
ation (Manual Selector at
1-2—High-
Intermediate Inhibitor Acting)
NOTE
Inhibitors are safety devices which provide
some measure of protection against engine
overspeed if the operator inadvertently
downshifts above prescribed speed.
a. Inhibitor Prevents 3-2 Downshift at
Speed
(fig. 2-9).
Excessive
2-21
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