1. Drive the car onto a ramp/inspection pit, or jack it up and place it on supports. Make sure that the car raised above the ground is positioned strictly horizontally. Check the transmission oil level before the first trip of the day, or at least 5 minutes after stopping the engine. The results of measurements taken immediately after stopping the car cannot be considered reliable, since some of the oil will then be distributed over the surfaces of the internal components of the gearbox.
2. Wipe the surface of the manual transmission housing from above, in the area where the speedometer drive is located.
3. Remove the bolt, remove the mounting plate, then remove the speedometer drive assembly from the transmission case.
4. Check the transmission oil level using the speedometer drive gear, which in this case is used as a dipstick. Wipe the gear dry with a clean, lint-free cloth, then push the drive assembly into its regular place in the transmission housing until it stops. Remove the assembly again and determine the oil level in the housing by the length of the wetted part of the gear. The edge of the wetted section of the gear should be located 4 mm above the base of the latter. A slight excess of the oil level is allowed, but in no case should it fall below the specified point.
5. If the level is insufficient, make the appropriate adjustment by pouring oil of the required grade through the hole for installing the speedometer drive assembly.
6. Excess oil can be pumped out of the crankcase through the same hole using a syringe or rubber bulb.
7. After adjusting the oil level, check the condition of the speedometer drive gear sealing ring, replace the defective ring. Lubricate the new sealing ring with clean transmission oil and seat the drive assembly in its regular place in the transmission housing. Engage the mounting plate with the gear groove, then screw in and tighten the mounting bolt with the required force.
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