HELI CQD16X1, Руководство по эксплуатации и обслуживанию

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motor shaft. Loose the M10 screw at the end of motor and remove the washer 10,
retainer ring, drive gear and shaft sleeve successively.
4.1.3 Disassembling of diving motor
Remove the four M12 bolts on the drive motor; remove the drive motor from
the gear box.
4.2 Rear axle
4.2.1 Working principle
The rear axle is installed on frame through pin at point 1. The rear axle supports
the transmission system and meanwhile, it can reduce the ground pressure of drive
wheel according to the operating surface condition and prevent the drive wheel from
idling.
As a part of rear axle, the balance wheel will rotate with the travelling direction
of truck when steering. The steering knuckle shaft of balance wheel is connected to
the steering connecting plate through two tapered roller bearings. See figure 4-2-1.
When the rear part of the truck is under upwarp condition, install the spring
between steering connecting plate and frame. When the truck is under horizontal
condition, the spring is under compress state. And part of the truck weight is applied
on the steering connecting plate which is transmitted to the balance wheel. Thus the
pressure on the drive wheel is reduced and truck is ensured to contact with ground
with four wheels even on uneven ground.