Sany SY155U Compact Excavator Parts

Keeping your Sany SY155U in peak operating condition starts with the right parts and a solid maintenance routine. Ensure your compact excavator stays in top shape with high-quality pilot filters, fuel filters, mirrors, and more. The SY155U delivers tight-tail swing performance and powerful digging capabilities in confined spaces, powered by a Yanmar Tier 4 Final engine. Don’t forget to stay on top of your maintenance—secure the parts you need to keep your SY155U running smoothly! Keep reading for a comprehensive maintenance guide for your machine.

Walk-Around Inspection

• Inspect hydraulic lines, cylinders, and fittings for leaks or damage
• Check the undercarriage, tracks, rollers, and sprockets for wear or buildup
• Verify bucket pins, bushings, and linkages are greased and secure
• Ensure steps, handrails, and safety labels are intact and legible
• Look over engine bay for loose components, fluid residue, or clogged filters

Daily Maintenance

• Check engine oil, coolant, fuel level, and hydraulic oil
• Drain water and sediment from fuel pre-filter
• Clean cab air filter and inspect air conditioner performance
• Grease all designated lubrication points on boom, arm, and bucket
• Test horn, travel alarms, and safety devices for function

Every 250 Hours

• Replace engine oil and oil filter
• Clean radiator, oil cooler, and fuel cooler fins
• Inspect fan belt condition and tension
• Check battery terminals and voltage level

Every 500 Hours

• Replace fuel pre-filter and fuel main filter
• Clean air cleaner primary and safety elements
• Lubricate slew bearing and swing gear
• Inspect pilot and return hydraulic filters

Every 1000 Hours

• Replace return filter, pilot filter, and breather filter
• Replace air cleaner elements
• Replace final drive gear oil
• Inspect radiator hoses, clamps, and fittings

Every 2000 Hours

• Replace hydraulic oil
• Drain and refill coolant
• Replace swing gearbox oil
• Inspect fuel injection system and high-pressure lines

As-Needed Maintenance

• Replace rubber tracks if lugs are worn or cables exposed
• Adjust travel lever clearance and pedal free play
• Clean condensation from hydraulic tank breather and sight glass
• Replace backup alarm or lights if non-functional

Final Maintenance Recommendations

Regular maintenance keeps your Sany SY155U operating reliably and safely on the jobsite. For a full range of Sany parts, explore our extensive EquipmentShare parts catalog. If you can't find the part you need, reach out to our parts experts for a custom order.