2.22 Gearbox
The for pairs of cogwheels that are sitting on the main gearshaft (clutch shaft) and the layshaftare
constantly engaged. All the gears as well as neutral (inbetween the 1
st
and 2
nd
gear)
Image 29. transmission oil filling screw (1)
Level check screw (2)
are engaged through use of the hand controlled clutch.
The bearing of the main gearshaft is handled by ball bearings, and the layshaft´s bearing by bronze
bushings. A shaft gasket is placed on the shaftwheel (cogwheel on the right hand side of the
transmission, which´s hub is carrying the chain pinion gear on it´s outside.), to avoid oil leaks.
The switch for the neutral gear control lamp is installed on the wall of the gearbox housing next to
the cogwheel. In neutral the contact is closed, so that the green control lamp on the instrument
panel lights up. Lubrication of the gear box and the primary drive train is maintained by first opening
the transmission oil filling screw and then filling the gearbox with transmission oil.
To check the filling level of the gear box oil, a level chaeck screw is installed. When unscrewed, oil
starts to leak out of the opening, as soon as the oil level is correct.
The oil should be changed and flushed after the first 300 miles. After that chganging and flushing of
oil should be done every 6000 miles. Use summer motoroil as lubricant for the gear box. (Total
filling 450cm³)
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General