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.
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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