Many people look for totally reconditioned parts, all our Gearbox Linkages are supplied with a 100% warranty and worldwide shipping. We are one of the largest suppliers of Gearbox Linkages in the UK, specialising in engines and gearboxes for cars and light commercials.
What is a Gearbox Linkage?
1. All automatic Gearboxes have basically the same shift linkage on the Gearbox itself. The shift linkage between the cabin and the
Gearbox varies between vehicles, but still has the same function. There is a column shift and a floor shift that are both cable operated. Shift levers have even been placed on the dash on several SUVs. None of these however, are very complicated. Detents
2. The arm on the Gearbox that is used to change gears will be common. As the lever is rotated, there will be definite detents for Park, Reverse, Neutral, Third or Drive, Second and First gears. On many Gearboxes, there will be a Fourth or overdrive detent. It all depends on the vehicle, but it still only uses a detent. On many vehicles, a button on the gearshift handle controls the overdrive function via a solenoid. Lockout
3. All vehicles today come with a lockout device that does not allow the vehicle to be shifted out of “Park” unless the brake is depressed. This is for obvious safety reasons. A small electrical solenoid actuates on the steering column or floor shifter when the key is on and the brake is depressed, freeing the shift lever so it can be moved. In the case of a column shift, when the shift handle is pulled down, the detents can be felt in each gear. Shift Lever
4. The indicator on the dash that shows the gear position of the handle is a small needle attached to a nylon cord. It is attached with a spring clip on the barrel of the column that turns with the handle. As the handle is pulled down, the barrel rotates clockwise and pulls on the indicator, dropping it into a lower gear. As the handle is raised, a spring pulls the indicator back toward park. Column Shift
5. On a column shift, a rod runs from the handle straight down, and has a lever attached to the end of it near the brake pedal arm. The shift cable runs up through the firewall and attaches to this lever. The cable runs from the firewall to the Gearbox gear shift linkage, where it is attached and held securely in place. As the handle is moved, it either pulls or pushes on the cable. In turn, the cable does the same to the Gearbox linkage. Floor Shift
6. A floor shift linkage operates by pushing or pulling on the cable by the forward and backward movement of the lever handle. If the cable ever needs to be replaced, make sure that the Gearbox (the gear shift on the side of the Gearbox) is in “Park.” When replacing the cable, make sure the shifter is also in “Park” like the Gearbox. Install the cable so that it fits loosely onto the Gearbox lever, and is secure. If the cable is left to flop around, it will flex every time the shifter is moved, and will be ineffective in changing gears.
Gearbox Fluid for linkage
Gearbox Fluid Supplies Hydraulic Pressure
1. Gearbox fluid works by supplying an automatic Gearbox with the hydraulic pressure necessary to function. Unlike a manual Gearbox, which uses gears, levers, and linkages operated manually to shift gears and engage and disengage the Gearbox, an automatic Gearbox uses automatic Gearbox fluid to perform vital Gearbox functions. As automatic Gearbox fluid flows throughout an automatic Gearbox, it flows under varying levels of pressure, levels that are determined by engine load, driving conditions and various gear selections. Torque Converter Pressurizes Gearbox Fluid
2. Without the action of the Gearbox torque converter, which is a cylindrical-shaped pump located at the front of an automatic Gearbox, Gearbox fluid would be virtually useless. Gearbox fluid must be pressurized for it to perform properly. The Gearbox torque converter, which is filled with small fans, metal fins, and a small internal pump and spinning rotor, sucks Gearbox fluid into its inner housing and rapidly spins and propels the Gearbox fluid about its inner housing. As the Gearbox fluid spins, it gains speed and develops a tremendous fluid pressure force. After being sufficiently pressurized, the Gearbox fluid flows out of the torque converter and into the main functional part of a vehicle’s Gearbox, the part that houses the Gearbox gears, bands and linkages. Flowing Gearbox Fluid Lubricates and Cools
3. In addition to supplying the fluid force necessary for a Gearbox to shift, Gearbox fluid also serves to lubricate and cool the inner workings of a Gearbox. Shifting gears, engaging and disengaging the Gearbox, rotating Gearbox bands and linkages–all of these actions produce heat and require constant lubrication. Without circulating Gearbox fluid, a Gearbox would quickly deteriorate. Circulating Gearbox fluid flows along a series of small channels and ports within a Gearbox, small openings that allow it to lubricate and cool all of the critical parts within the Gearbox. How to Determine Which Gearbox Fluid to Use
Each vehicle requires a specific Gearbox fluid type. A Gearbox uses hydraulic lubricants with a fixed tolerance for temperatures. Every Gearbox, whether automatic or manual, relies on Gearbox fluid. When the level of Gearbox fluid is too low, the Gearbox stops working and the car will not move. Gearboxes requiring fluids with different viscosity ratings have spawned numerous Gearbox fluid product choices, which are not interchangeable. Contemporary vehicles have several varieties of Gearboxes, and some use synthetic Gearbox fluids. Only the type specified by the manufacturer can be used without risking damage to your Gearbox.
