190303d Flashcards
What does the governor monitor?
Ground speed
What are the three main hydraulic circuits in a transmission
The clutch circuit the torque converter circuit in the lubrication circuit
What are all the different pumps within a powershift transmission
Transmission scavenge pump torque converter scavenge pump transmission charge pump and steering a break lubrication pump
What does the speed selector spool do in the shift select
Direct oil from the charge pump to the speed clutches
What’s the modulating relieve valve doing in the shift selector
It controls maximum clutch application pressure
What does the load piston do in the shift selection
Controls the rate of pressure rises. This is called clutch modulation it done port to prevent shift shock
What is the ratio Valve
The ratio valve ask at the torque converter pressure relief
What is the directions selector spool do within the shift selector
Direct oil to either the forward or reverse range clutches
Where is the transmission cooler located in the circuits
After the torque converter but before the lubrication circuit
