SANY SY155U, Руководство по эксплуатации и обслуживанию, Страница: 120 / 192

5-10
MAINTENANCE
SY155U Excavator OMM
Industrial Gear Oil/Temperature Data
NOTE: Any brand meeting AGMA standard 9005-D94,
ISO 3448 grade 220 is acceptable. Short-term use
of low-viscosity engine oil in cold temperatures (below 23°F [-5°C]) promotes engine life.
Long-term use of low-viscosity engine oil can
reduce engine life.
Hydraulic Oil/Ambient Temperature Data
Hydraulic oil is an important part of the hydraulic system.
Hydraulic oil lubricates hydraulic system components,
carries heat away from components, and contains
anti-corrosion additives and detergents.
Hydraulic system malfunctions are often caused by poor
machine maintenance practices. Following the guidelines
below will result in proper hydraulic system maintenance:
• Do not use any additives in the hydraulic oil. • Change the hydraulic oil that has been subjected to
overheating or damaged components.
• Change the hydraulic filter as recommended.
• Keep the hydraulic oil tank filled.
• Keep the oil cooler free of dust and debris.
• Cap and plug all openings after removing components
for service or repair.
NOTE: Selection of the proper hydraulic oil is based on
local operating climate and conditions.
• Use ISO VG 46 anti-wear hydraulic oil in general
temperate climates.
• Use ISO VG 32 low-temperature anti-wear hydraulic oil
(pour point is -43.6°F [-42°C]) in general arctic areas
where ambient temperatures can reach -22°F (-30°C)
during operation.
Oil Type
Temperature °F (°C)
-4
(-20)
14
(-10)
32
(0)
50
(10)
68
(20)
86
(30)
104
(40)
122
(50)
220 LS2 (85W-140)
Oil Type
Temperature °F (°C)
-22
(-30)
-4
(-20)
14
(-10)
32
(0)
50
(10)
68
(20)
86
(30)
104
(40)
122
(50)
ISO VG 46 anti-wear hydraulic oil
ISO VG 32 low-temperature
anti-wear hydraulic oil