Hydraulic System--Reverse-Range Operation

2-19. Hydraulic System--Reverse-Range

manual selector is at the 2-3 position, the trans-

Operation

mission cannot downshift to low range. This is

prevented by a main pressure branch, at the top,

a. Main-Pressure Circuit (red--fig. 2-8).

left side of the manual selector valve bore, which

(1) In reverse-range operation, the main

directs main pressure to the upper area surface of

pressure circuit functions as described in paragraph

the low-intermediate shift plug, and to the lower

2-15a, except for the distribution of oil at the

end of the shift valve. This pressure holds the low-

manual selector valve. Here, the valve is at its

intermediate shift valve upward as long as the

extreme upward position. This permits oil to flow

manual selector is at 2-3 position.

into the reverse-range clutch circuit. When the

b. Other Functions Same as 1-2-3 Operation (fig.

valve is at any other position, the reverse-range

2-7). In high-range (2-3) operation, the other

clutch exhausts into the manual selector valve bore

circuits operate as described in paragraph 2-17 for

above the selector valve.

high-range (1-2-3) operation.