IMPORTANT After you fill the transmission with oil, run The car is moving, it will fail in a very expensive way. If the overdrive engages in reverse while In first or reverse check the wiring and the switch adjustment The solenoid shouldĬlick on in every gear except first and reverse. Into each of the gears, especially reverse. Turn the ignition on, turn the over drive switch on, then shift To remove it and clean out hole and the piston. There is rust or grime built up inside the solenoid you may have Is activated you will hear a click and the lever will move. There isĪ lever attached to the bottom of the solenoid. Start the car, test the new wiring for the overdrive. IMPORTANT Before you replace the transmission cover or Housing, goes under the floor and attaches to the overdrive unitīy the hand brake (now you know why the rubber boot for the hand The speedometerĬables for overdrive transmissions are readily available. You will need to get a new longer speedometer cable. If your old transmission was not fitted with an overdrive unit, Switch is located on the instrument panel along side the heater Rear of the battery box towards the right side. The relay, when fitted by the factory, was placed on the lower Use the schematic that comes in the TR3A and TR4 owner's manuals Only one overdrive cutout switch on the top of the transmission. Schematic is for the TR2 and early TR3 transmission which has Provided in the red factory TR2 manual or the Haynes manual. When wiring up the overdrive, do not use the wiring schematic Since the TR4 shift lever is different, use Otherwise it gets in the way of lining up the transmissionįor installation. Way, the transmission goes in easier if the drive shaft is completely You can use your TR3 drive shaft without modifications. The mounting holes on the bracket where it mounts to the transmissionĪnd where the bracket mounts to the frame. The transmission mounting holes will be slightly to the rear You to readjust the clutch slave cylinder rod. You will need the next length longer bolts at theīottom of the bell housing because the lip on the TR4 transmission The TR4 Transmission will bolt up to your TR3īell housing. The TR4 transmission is externally very similar to the TR3įollow your workshop manual's instructions for removing and reinstalling
The TR4 transmission and the TR4 transmission is almost a bolt-in This is because the TR4 transmission has syncro betweenįirst and second gears, parts are still readily available to rebuild Is becoming more popular to install TR4 overdrive transmissions
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