The direct c;utches are applied in reverse and and third, in other words they are used in reverse and third gear which is direct. When the piston gets fluid behind it to apply the clutches,it applies on only one half of the piston in rev.
Gotta ask why do we need all the clamping force in R?
They should have been built the other way around from the factory.
Almost always have higher throttle angle/TV pressure going forward since the operator has more control. The reverse band may also require this pressure for the extra holding power.By the way, looked at oil flow schematic, and youre correct it feeds both sides of piston in rev.Just curious though, on the reverse question,whats the difference in going up the hill in rev. with heavy load if gravel, and going up hill in forward gear at same throttle pressure and no forward boost valve.
Because the output shaft is turning opposite the input shaft , increased clamping force was found to be necessary to eliminate slippage when coupling components . Also if a loaded vehicle attempts to accelerate in reverse up an inclined angle plane the same increase in pressure was found to be necessary.Gotta ask why do we need all the clamping force in R?
They should have been built the other way around from the factory.