Maintenance
SY50U Excavator OMM
5-10
Operation and Maintenance Manual — 0120
SANY
RECOMMENDED LUBRICANTS, FUELS, AND COOLANT
Always use SANY-approved lubricants, engine coolants, and filters. SANY is not responsible for damage caused
by using unauthorized lubricants and engine coolants. Contact a SANY dealer for additional information.
Hydraulic Oil Description
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 add any additives to the hydraulic oil.
•
Replace hydraulic oil that has been subjected to overheating or damaged components.
•
Change the hydraulic oil filter as recommended.
•
Keep the hydraulic oil tank filled to the full level.
•
Keep the oil cooler free of dust and debris.
•
Cap and plug all openings after removing components for service or repair.
Lubrication and Grease
Always use clean extreme pressure (EP) grease when greasing the machine. Avoid using low-viscosity greases.
SANY recommends EP 2 or equivalent designed lubricants for heavy-duty plain and rolling element bearings
operating under severe conditions, including shock loading in wet environments.
Windshield Washer Fluid
Only use clean automotive windshield washer fluid. Do not mix concentrates into the washer fluid. In cold weather
areas, use washer fluid with a low temperature rating.
NOTICE!
Never mix lubricants of different types or viscosities (weights), and never overfill the system
being serviced. Failure to follow these standards can cause damage to the machine, or may
cause improper machine operation.