Every 100 Hours; After The First 100 Hours; Monthly Or Every 250 Hours; Every 3 Months Or 500 Hours - SANY SY35U Operation And Maintenance Manual

Maintenance
• Adjust the track tension. (See page 5-68.)

Every 100 Hours

• Lubricate the machine. (See page 5-19.)
• Lubricate the swing bearing. (See page 5-80.)

After the First 100 Hours

• Initial replacement of the hydraulic oil return filter. (See page 5-60.)

Monthly or Every 250 Hours

Make sure all daily and 50-hour maintenance tasks have been completed before proceeding with the 250-hour
maintenance tasks.
• Inspect and adjust air conditioner compressor belt tension. (See page 5-44.)
• Change the engine oil and filter. (See page 5-33.)
• Check the doors and hood. (See page 5-21.)
• Check the track tension. (See page 5-67.)
• Check the track assembly. (See page 5-67.)
• Check the fuses. (See page 5-28.)
• Initial change of the final drive oil (See page 5-73.)
• With a breaker operating above 50%, replace the hydraulic oil return filter. (See page 5-60.) Otherwise, see
"Hydraulic Breaker Maintenance Interval" on page 5-18.
• Clean/replace ventilation filter screen on cab machines. (See page 5-43.)

Every 3 Months or 500 Hours

Make sure all daily, 50-hour, and 250-hour maintenance tasks have been completed before proceeding with the
500-hour maintenance tasks.
• Check the upper structure and undercarriage. (See page 5-87.)
• Check the final drive oil level. (See page 5-72.)
• Check the hydraulic lines and hoses. (See page 5-65.)
• Check the hydraulic pump. (See page 5-65.)
• Inspect the engine coolant pump. (See page 5-41.)
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Operation and Maintenance Manual — 0120
SY35U Excavator OMM
SANY