Keeping your JCB 508-66TC in peak operating condition starts with the right parts and a solid maintenance routine. Ensure your telehandler stays in top shape with high-quality oil filters and more. The 508-66TC offers high reach and lifting performance on rough terrain, with superior boom control and operator comfort. Don’t forget to stay on top of your maintenance—secure the parts you need to keep your JCB 508-66TC running smoothly!

Walk-Around Inspection

• Inspect hydraulic hoses, lift arms, and cylinders for leaks or visible damage
• Check tires for wear, damage, and proper inflation
• Inspect the boom for cracks, bent plates, or worn pins and bushings
• Confirm that all safety decals and ROPS/FOPS labels are legible and present
• Check for leaks beneath the engine, transmission, and axles
• Ensure cab windows, mirrors, and steps are clean and secure

Daily Maintenance

• Check engine oil, coolant, DEF, and hydraulic oil levels
• Inspect and clean radiator, transmission cooler, and oil cooler fins
• Check and drain water separator if needed
• Check battery terminals for corrosion and ensure secure connections
• Grease boom pivots, swing bearing, and stabilizer legs (if equipped)
• Test horn, lights, gauges, and backup alarm for functionality

Every 50 Hours

• Grease all pivot pins and joints including lift, tilt, and extend/retract functions
• Inspect and adjust V-belt tension
• Check battery water levels and clean terminals

Every 250 Hours

• Change engine oil and replace oil filter
• Inspect and replace cabin air filter
• Check alternator belt and adjust if needed
• Torque boom and undercarriage fasteners

Every 500 Hours

• Replace hydraulic return filter
• Replace engine fuel filter and water separator
• Clean DEF injector and monitor system for buildup

Every 1,000 Hours

• Change coolant if not completed annually
• Replace hydraulic tank breather filter
• Check and service DEF filter

Every 2,000 Hours

• Change final drive and axle oil
• Inspect engine valve clearance
• Perform SCR system refresh if prompted by display

Annual Maintenance

• Flush and refill hydraulic reservoir
• Inspect all cab mount bolts, welds, and safety structures
• Test safety systems including load moment indicators and inclinometer

As-Needed Maintenance

• Replace damaged hoses, wiring, or connectors
• Inspect and replace worn tires or wheels
• Replace platform decals or foot switches if worn
• Adjust or replace bucket or fork attachment wear parts

Final Maintenance Recommendations

Regular maintenance keeps your JCB 508-66TC operating safely and efficiently. For a full range of JCB 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.