|
|
Content .. 1175 1176 1177 1178 ..
The PR fluid pressure moves the valve against the spring force and fills the Lo/reverse fluid Transmission Fluid Pressure (TFP) Manual Valve Position Switch Assembly The TFP manual valve position switch consists of five fluid pressure switches: D2 and D3 are Shift Solenoid Valves (1-2 and 2-3) Both shift solenoid valves, which are normally open, are energized by the PCM and block fluid Shift Valves (1-2, 2-3 and 3-4) Signal A fluid pressure holds the 1-2 shift valve in the downshift position and the 3-4 valve in the
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 547: Park - Engine Running REVERSE When the gear selector lever is moved to the Reverse (R) position (from the Park position), the Manual Valve The manual valve moves to the Reverse position and line pressure enters the reverse fluid circuit. Lo and Reverse Clutch As in Park, PR fluid pressure acts on the outer area of the lo and reverse clutch piston to apply Reverse Input Checkball (#3) Reverse fluid pressure seats the #3 checkball, flows through orifice #17 and fills the reverse input
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
fluid circuit. This orifice helps control the reverse input clutch apply rate when engine speed is at Reverse Abuse Valve Reverse fluid pressure acts on the end of the valve opposite of spring force. At engine speeds Boost Valve Reverse input fluid pressure moves the boost valve against the pressure regulator valve spring. Reverse Input Clutch Piston Reverse input fluid pressure moves the piston to apply the reverse input clutch plates and obtain Reverse Input Air Bleed Checkball This ball and capsule is located in the reverse input fluid circuit in the oil pump to provide an air Transmission Fluid Pressure (TFP) Manual Valve Position Switch Assembly Reverse input fluid pressure closes the normally open reverse switch in the TFP manual valve Shift Solenoid Valves (1-2 and 2-3) Both shift solenoid valves are energized as in the Park range. Signal A and signal B fluids are Shift Valves (1-2, 2-3 and 3-4)
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Signal A fluid pressure holds the 1-2 shift valve in the downshifted position and the 3-4 shift Pressure Control (PC) Solenoid Valve The PC solenoid valve continues to regulate AFL fluid into torque signal fluid pressure. The Note: The explanation in each gear range is, for the most part, limited. Fig. 548: Reverse NEUTRAL - ENGINE RUNNING When the gear selector lever is moved to the Neutral position (N) from the Reverse position, the Manual Valve
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Content .. 1175 1176 1177 1178 ..
|
|
|