JAWA ZVL 210 Service Manual - page 6

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4. Engine Torque Transmission - Diagram (Fig. 4)

(C) so that they run at the same speed. The run-

and Description

ning of the layshaft gears (4) and (5) at different

speeds is enabled by the freewheel (D). The gear

Gearbox

change is effected by the automatic centrifugal

The diagram of the two-speed automatic trans-

clutch (C) provided with two shoes of the leading

mission is shown in Fig. 4.

type. The operation of this clutch is controlled by

force closing between the parts (2'), (6) and (7)

The torque is transmitted from the crankshaft

(1) to the gears (2—2') over the starting clutch

(B) by an indented belt.

From the output shaft (7), the torque is trans-

mitted to the rear wheel by means of secondary

1st-speed gearing:

transmission.

It is formed by two pairs of involute spur gears

(3, 4, 5 and 6) meshing with the freewheel (D)

The force-closed clutch engages the respective

between the gears (4) an(5) on the layshaft. From

gear depending on the road speed, the drive taken

the gear (6), the torque is transmitted over a force

off the automatic transmission, the acceleration

closed mechanism to the output shaft (7) and

and deceleration, and the rolling resistance of

the rear wheel by means of the secondary trans-

the vehicle in terrain

mission chain.

2nd-speed gearing:

The output shaft (7) with the gear-change me-

chanism runs in two ball bearings. The layshaft

Parts (3), (6), and (7) are coupled with the clutch

is supported by two bronze bushes.

ZVL model 210   Workshop Manual   Page 8                    

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