SANY SY155U, Operation And Maintenance Manual

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MAINTENANCE
5-9
SY155U Excavator OMM
Engine Coolant
Engine coolant is an important fluid protecting against
overheating and freezing. Anti-freezing engine coolant is
also necessary in regions where freezing protection is
unnecessary:
• If using concentrated engine coolant, use distilled
water to dilute per instructions on engine coolant
container. Natural water, such as river water and well
water (hard water) contains large amounts of minerals
(calcium, magnesium, etc.) which can form scale in the
engine and radiator. Mineral scale is not easily
removed and can cause overheating.
• Precautions in this manual must be followed when
working with engine coolants.
• Some engine coolants are flammable. Keep them
away from open fire.
• If the engine is overheating, wait for the engine to cool
before refilling engine coolant.
NOTE: See the engine manual or contact a SANY dealer
for the recommended engine coolant.
Engine Oil Viscosity/Temperature Data
NOTE: Due to its comparatively better lubricating characteristics (including improved oil consumption, engine operation
in frigid climates, and continued lubrication in high temperatures), SAE 15W-40 is recommended for most
climates. In some circumstances, short-term use of low-viscosity engine oil in temperatures below 23°F (-5°C)
is acceptable; however, long-term use can reduce engine life.
Lubricating Grease/Temperature Data
NOTE: Always use clean EP (extreme pressure) grease
when greasing the machine. Avoid using
low-viscosity greases. SANY recommends EP 2
or equivalent.
Oil Type
Temperature °F (°C)
-22
(-30)
-4
(-20)
5
(-15)
32
(0)
50
(10)
68
(20)
86
(30)
104
(40)
122
(50)
SAE 15W-40
SAE 10W-30
SAE 5W-30
SAE 5W-40
SAE 40W
Grease Type Summer Winter
NGL1 #2 molybdenum disulfide
lithium-based grease
NGL1 #1 molybdenum disulfide
lithium-based grease