8
6.1.1 Engine
All driving devices (Engine-transmission) are fixed on the rear frame by 6 rubber
vibration reduction housing.
Viewed from the engine fan, the direction of the crankshaft is clockwise.
The combustion air is drawn through an air filter.
Lubrication of all bearings in the engine as well as cooling of some running
engine parts is conducted by forced feed lubrication. The lubrication system is fed by
a pump drawing oil from the engine oil sump.
The engine oil is cooled by internally hidden oil cooler mounted in the engine. For
details please refer to the operating instruction for diesel engine.
6.1.2 Hydrodynamic torque converter-transmission (ZF6WG200)
The ZF6WG200 hydraulic transmission is composed of torque converter and
dead-axle and multi-gear transmission of constant shaft, with the speed of 6 forwards
and 3 reverses.
The torque converter is simple 3 units construction with no-lock clutch, the circle
diameter is
Φ
340
，
the torque coefficient Ko=2.55 at the lost speed. The torque
converter pump wheel is directed mounted on the engine fly-wheel by means of
spring plate. the oil temperature should be 80
～
110
℃
when at normal work and it is
allowed to reach 120
℃
at moment.
The transmission has 6 multi disk clutches controlled by hydraulic which can
engage and disengage under the load reach the power shift. The transmission gear is a
constant engagement drive. Its construction and principal can be seen in the following
attached figures The speed ratio of the transmission as follows:
Forward Reverse
1
st
2
nd
3
rd
4
th
5
th
6
th
1
st
2
nd
3
rd
5.986 3.904 2.594 1.692 1.178 0.768 5.906 2.594 1.178
There are two pumps outside the transmission. They are dived by pump wheel of
torque converter. Output shaft of the transmission is combined with driving axle
backwards to transmit power to the rear axle. Output shaft is connected to the driving
shaft backward and transfers the power to the rear axle. Output shaft is linked to the
parking brake forward.
The gear shift of transmission is operated by electro-hydraulic shift (hand control
selector) at driver’s right side. The gear shift changes can be achieved by each
electro-magnetic valve connected to hand selector and then to control hydraulic
sliding valve.
Note! Here the user shoult notice that the operation should be done
gradually and sequentially without humping over any gear.
Besides, the transmession can achieve reverse control only in 1
st
gear.During
Summary of Contents for PY180H
Page 16: ...12 A3 电气接线图 ...
Page 39: ...35 A3 润滑图 ...
