General description of the four-speed gearbox 020 (4R) The gearbox, as well as the main gear, are located in a common crankcase, and the dismantling of one of the nodes requires the obligatory displacement of the other. Repair or...
3gearbox replacement The gearbox can be removed from below the vehicle. In this case, it is necessary to support the gearbox housing with a jack. Replace the gearbox as follows: Disconnect the...
Gearbox disassembly The disassembly and assembly operations of the gearbox are facilitated by using a special mounting stand. If there is no such rack, the box should be well supported with wooden...
Input shaft assembly The following is only the assembly procedure for the gearbox, the adjustment procedure will be described in the next paragraph. Before assembling the shaft, put the blocking ring...
Installation of the secondary shaft When removing both tapered bearings from the output shaft, they become unusable. Therefore, on one side of the shaft, the cover with the bearing should be replaced, on the other,...
Installation of the main gear Heat the new differential bearings to 100°C and install them on the journals. For this purpose, you can use a nozzle of a suitable diameter. The second pipe must be placed on the...
Adjustment after gearbox assembly In table. 19 shows the types of gearbox adjustments after replacing these parts. Table 19 Component or part to be replaced Adjustable units and parts Transmission housing from the...
Input shaft adjustment Adjusting the primary gear from the clutch side, attach a special bracket 30-21 with a bushing vw 295a ( see fig. 338 ). Assemble the shaft without the ball bearing. Screw nut A...
Output shaft adjustment The adjustment of the secondary shaft is associated with determining the thickness of the shim under the outer race of the front shaft bearing. It is the smaller of the two...
Final drive installation Insert the outer race of the bearing opposite the ring gear of the driven gear of the final drive into the crankcase of the box, placing an adjusting washer 1.0 mm thick under it....
Replacing and adjusting the gear selection mechanism The device of the gear selection mechanism is shown in fig. 355. Guided by this image, you can perform all the operations for their dismantling and installation. During these...