Valvebody Basics. Transmission Hydraulic Pressures. Mainline Pressure Throttle Pressure Governor Pressure. Pressure Regulation. Regulator Valve Variable Regulated Pressure . Building to Max Pressure. Pressure Regulator Valve. Bleeds off pressure when maximum pressure is reached.
Building to Max Pressure
Opposes TV pressure to control shift points
Driven by output shaft
Higher speeds = Higher pressure
Spool Valve Type
Valves allow fluid to not bleed off the higher speed you go.
Governors stick sometimes and can be cleanedGovernor Pressure
Spool Valve operated
-When speed is high, governor pressure is higher than throttle pressure.
-Allows mainline pressure to pass through and cause a upshift
When Vehicle speed low
Throttle pressure and spring
Pressure are higher than