© Oct 2020 5-10 AB18EJ&18HJ Maintenance Manual
MAINTENANCE PROCEDURES
NOTICE
• The engine oil filled by the factory is generally
CH-4 with viscosity 15W-40, suitable for regions
with ambient temperature range of 15℃～40℃. If
the operating ambient temperature is outside of
the range, please change the engine oil as
appropriate.
• The muti-grade engine oil can provide excellent
lubrication under high-temperature operating
condition, reduce the sediments, and improve the
engine low-temperature start performance and
durability.Also, the multi-grade engine oil plays an
important role in fullfilling the machine with the
emission standards.
• Do not mix the engine oils of different grades.
• It is recommended that the sulphated ash content
not exceed 1%, otherwise it will damage the air
valve or piston, and lead to excessive
consumption of engine oil.
• The use of high-quality engine oil in conjunction
with suitable oil filter and change interval is very
critical to maintaining engine performance and
extending service life. If the oil or oil filter is not
changed as recommended, there will be
sediments, contaminants or wear incurred which
will shorten the engine service life.
A-9 Inspect Coolant Level (AB18HJ
only)
The appropriate coolant level is vital to maintaining the
engine performance and extending its service life,
otherwise it will damage the engine parts. Through the
daily check the inspector can know about the changes
on coolant level which may indicate a system distress
with the engine.
HIGH TEMPERATURE AND
PRESSURE HAZARDS
Before inspecting the coolant level,
allow the coolant to cool down to
room temperature, and slowly open
the cover to release the pressure.
NOTICE
Turn off the engine before inspection.
1. Turn off the engine, and open the right turntable
cover.
2. Open the cover of coolant box over the radiator to
inspect the coolant level.
Figure 5-4
3. The coolant level should be at the fill inlet of the
coolant box.
4. Add coolant as needed. Do not overfill. It is
recommended to choose the -18℃ ready-mix
coolant or the ethylene glycol(ethylene and
propene) in ratio mix with water. The water quality
must meet the requirements as listed in the table
below.
Table 5-7
COOLANT TYPE
RECOMMENDED
AMBIENT TEMP
-18℃ ready-mix coolant -18℃ or higher
-37℃ ready-mix coolant -37℃ or higher
50% ethylene glycol and
50% water mixed coolant
-32℃～0℃
650% ethylene glycol and
40% water mixed coolant
-54℃～-32℃
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