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SYSTEMS OPERATION
2. Prefihling of forward clutch piston chamber
Upon completion ofprefilling the 1st-speedclutcl~
piston chamber, the speed clutch pressure rises
beyond 2 kgf/cm2(28 psi) [0.2 MPa]. This pres
sure moves differential, valve 7 to the left end,
allowing the speed clutóh pressure oil to enter
forward clutch pressure port (CF) through inching
valve 8.
Since accumulator valve 1 does not move yet,
keeping main port 2 uncovered, the oil from the
pump flows into the forward clutch piston cham
ber without being metered.
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