5.5 Rear axle
The rear axle is primarily composed of an axle body, right and left knuckles, tie rods,
wheels, hubs and steering cylinder. The steering axle is of cranks and slider mechanism.
The cylinder piston rod pushes the knuckle steering through tie rod, causing wheel’s
deflection and truck’s steering. The steering axle is bolted to the rear frame by the
buffer.
(1) Rear axle body
The rear axle body is of the steel plate weld construction type and has boss holes
for knuckles at both ends.
(2) Right and left knuckles
On the knuckle, a hub for installing a wheel thereon is installed by two bearings.
The hub is provided with an oil seal for grease. The knuckle is installed between two
bosses with bearings through which a king pin is inserted. Lubricate all bearings by a
nozzle installed on the top cover, users must add lubricant in time.
(3) Steering cylinder
The steering cylinder is of double-action piston type. The seal unit consists of the
supporting ring and O-ring seal. The construction of the steering cylinder is shown as
Fig. 5.6.
Fig. 5.6 Steering cylinder
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