Line pressure through the timing valve moves the overdrive piston into contact with the overdrive clutch. Valve body: Also known as the control valve assembly, the valve body is a component that is comprised of valves, solenoids, an orificed separator plate and a series of passages. Separator plate: Metal plate between valve body sections or between a valve body and transmission case that contains orifices and connects passages between the two sections. This is not a one size fits all converter; this is a tailor made unit for your truck and only your truck. Carrier Bearing: A bearing that supports the carrier in a differential. Tolerances are checked to very high specs. Line pressure: The base operating pressure in an automatic transmission.
Clutch plate: A friction lined disk designed to resist movement between two components; part of a multi disk clutch pack. Lock-up torque converters provide more efficient operation and better fuel economy by eliminating slippage between the engine and transmission at highway speeds. The boost valve provides increased fluid apply pressure to the overdrive clutch during 3-4 upshifts, and when accelerating in fourth gear. In the 1st picture notice the 518 transmission has a larger tail area. Clutch hub: A component that has clutches splined to its outside diameter, often found inside a clutch drum.
Reverse: The transmission position enabling the vehicle to back up. Center differential: A device found in all-wheel-drive vehicles which biases torque from front to rear and in a tight turn it allows the front and rear wheels to turn at different speeds. A cross leak can be caused by things such as a warped valve body, a worn sealing ring, blown gasket, etc. Front pump: A pump, located at the front of the transmission, driven by the engine through the torque-converter housing, to provide fluid pressure and volume to operate the transmission whenever the vehicle is running. Once in overdrive the transmission will not come out of overdrive until the overdrive solenoid is turned off, or the vehicle speed goes below 44 miles per hour, or the vacuum drops below 3 inches. Gear ratio: The relationship between a driving and a driven gear.
Compound Planetary Gear Set: A gear set that contains more than just the three basic members of a simple planetary gear set. Input clutch: The transmission clutch that receives power from the engine, normally attached to the input shaft. Turbine: Attached to the transmission input shaft, the turbine is the driven or output component of the torque converter. I'm deployed, and I have no room to start. Viscosity: The resistance of a fluid to flowing, as in the thickness of an oil. With our huge array of impeller housing, stators and turbines, we can easily build you a converter that will make you grin from ear to ear! I'm just wondering about the lockup vs.
Our Twenty-two employees delivered over 9000 units this past year. Yoke: A component having internal splines that slide on the transmission output-shaft external splines. You can get the cable and brackets from a junk yard. Transducer: A device that converts an input of one type into an output of another type, such as a sensor that converts pressure into an electric signal. The manual valve is attached to the shifter and is used to select park, reverse, neutral, drive, etc. Warranty Process: In the rare case of a transmission failure please call our warranty department where a representative will assist you in the warranty process. Click here for 727 to 518 swap wiring diagram.
I honestly have no idea if there are any electronics for one. An example of this is a driveshaft slip yoke. A flexplate often, but not always has the starter ring gear attached to its outside diameter. Accumulator valve: A valve that regulates accumulator action based on load and throttle opening. Otherwise, we give you the option to coordinate the return shipping on your own and independently pay your courier of choice. Lip seal: A rubber seal with a beveled edge that seals against pressure. The opening in the floor board may require slight modification.
Through years of experience we have developed several procedures to help fix these problems. What is a Core Charge? Variable-pitch stator: A torque converter design that is capable of altering stall speed and torque multiplication based on driving conditions and throttle opening. An example of this is a transmission shift solenoid. Garage shift: The initial shift into drive or reverse from park or neutral. A viscous clutch is typically used in all wheel drive applications to help allow for biasing between front and rear axles.
An example of this is the two alignment pins that locate a transmission's bell housing to an engine block. Governor pressure: The pressure signal produced by the governor. Automatic transmission: A transmission that shifts itself. Sealed bearing: A bearing, such as those found on many rear axle shafts or water pump that is lubricated and permanently sealed by the manufacturer to contain the grease while keeping out contaminants. Outer race: The race nearest to the outside of the hub of a roller bearing.
Certified Every remanufactured transmission has been built and inspected by a certified technician. Run a 12 volt fused wire that turns on and off with the key to the vacuum switch, then to the center wire on the transmission connector. Line pressure is adjusted at the valve body pressure regulator spring, confirming the setting with a hydraulic pressure test. Powerbrake: In an automatic transmission-equipped vehicle, the act of holding the brake pedal while revving the engine. Call Monday-Friday 9-5 Central 1-888-995-7278 Dyno-Tested Every transmission has been run on a state of the art Dyno.
This is a normally open vacuum switch that takes 7 inches or more of vacuum to shift into overdrive and lock-up the torque converter and 3 inches or less of vacuum to down shift and unlock the torque converter. There are two wire 518 transmissions out there, these have a non-lock-up torque converter. Thanks for the tips, y'all. The truck will be a 72-80 Crew Cab, so electronics might be a challenge. Shift kit: A kit normally containing drill bits, springs, check balls and other components to modify a valve body, usually for high performance operation. Forward clutch: A clutch that is engaged whenever the vehicle moves forward, controlled by the valve-body forward circuit.