Zoomlion RT75, Operator'S Manual

Page: 52 / 178

RT75 Rough Terrain Crane
05 - 13
I. TROUBLESHOOTING
–
ENGINE
If failures occur during crane operation, stop working immediately and remove the
safety hazards. At the same time, disengage the PTO for transmission and make the
engine run at idle speed. After that, check control instruments, e.g. transmission oil
pressure gauge and engine coolant temperature gauge, etc. for functional work.
It is a normal phenomenon that the engine oil pressure low indicator lights up
when starting the engine with the PTO engaged. The warning indicator will go
off after the oil pressure increases to the specified value.
(
(
1
1
)
) The illumination of the engine oil pressure low indicator indicates that the engine
oil pressure decreases abnormally. Bring the vehicle to a standstill immediately
and contact the manufacturer or specialized repair factory.
Do not turn off the engine immediately when it is overheated. Otherwise, the
engine will be sintered caused by sudden raising coolant temperature. Check
for leaks when the engine is running for cooling. Stop the engine after the
coolant temperature decreases. At this time, reinspect engine coolant level and
check fan belt for damages and loosening.
(
(
2
2
)
) When the engine coolant temperature gauge points to the red area, cool down
the engine at the RPM a little higher than the idle RPM.
Points for attention when adding coolant:

Use proper coolant.

When the coolant temperature is extremely high, hot water will spray.
Therefore, tighten or loosen the radiator cover using a piece of cloth.
Otherwise, there is a risk of burn hazard.
Caution
Caution
Caution