Operation Manual of WEICHAI GENSET
severe cases, the diesel engine will not function properly.
S/N Fault
Treatment method
The governor linkage is jammed;
the lubricating oil is dirty or the
lubrication effect is poor; foreign
matter enters the surface of the
1
fitting pair, making the governor Check and adjust it.
linkage not move smoothly or
increasing the resistance, thus
reducing the sensitivity of the
governor.
The internal parts or working face of
2
the governor are seriously worn,
resulting in excessive resistance and
Check and adjust it.
reduced sensitivity of the governor
The governor parts are too tightly
3
matched and the motion resistance
is too high; thus, the oil supply rod
Check and adjust it.
does not move flexibly
There is too much oil filled in the
governor. Because of the damping
4
effect of oil, the expansion and
contraction of the centrifugal block
Check and adjust it.
is hindered, thus reducing the
sensitivity.
All connection points of the
governor are worn out of limit,
resulting in loose matching and
clearance increase. When the
engine speed changes, the
5
centrifugal thrust of the flying ball
must eliminate the clearance, so
Check and adjust it.
that the oil supply adjustment rack
(or shift fork) can be pulled to
increase or decrease the oil supply
quantity, making the governor
function lag.
The inflexible movement of the fuel
supply control rod of the fuel
6
injection pump hinders the normal Check and adjust it.
function of the regulator, resulting
in unstable fuel pumping quantity
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