Keeping your JLG 12054 in peak operating condition starts with the right parts and a solid maintenance routine. Ensure your telehandler stays in top shape with high-quality key switches, mirrors, transmission filters and more. The 12054 offers 12,000 lbs of lift capacity and over 53 ft of lift height, with outriggers and advanced boom control for safe, heavy-duty handling. Don’t forget to stay on top of your maintenance—secure the parts you need to keep your JLG 12054 running smoothly!

Walk-Around Inspection

• Check boom, cylinders, hoses, and wear pads for leaks or damage
• Inspect outriggers, frame level system, and pivot pins for proper operation
• Check tire condition and pressure, ensure lug nuts are tight
• Inspect engine bay for fluid leaks, worn belts, or loose wires
• Ensure decals, mirrors, safety labels, and glass are in place and readable
• Inspect lights, cab controls, seat belt, and warning devices for function

Daily Maintenance

• Check engine oil, coolant, DEF, and hydraulic oil levels
• Drain fuel/water separator if water is visible
• Grease lift, tilt, and extension cylinders and other lube points
• Inspect air cleaner indicator and radiator fins
• Check battery connections, horn, lights, and control responses

Every 50 Hours

• Check washer fluid level
• Grease front and rear axles, boom pivots, and stabilizers
• Inspect belt tension and tire lug nuts

Every 250 Hours

• Change axle oil and wheel end oil
• Change transmission oil and filter
• Inspect boom chains and wear pads
• Repeat all 50-hour lube points

Every 500 Hours

• Change engine oil and oil filter
• Replace hydraulic return filter and tank breather
• Replace fuel filters and clean DEF injector (ULS engines)
• Inspect battery and terminals

Every 750 Hours

• Change hydraulic return filter again
• Replace tank breather (ULS only)

Every 1,000 Hours

• Change hydraulic fluid and filters
• Check and grease boom chains
• Check park brake operation
• Replace air filter and DEF filters if fault codes present

Every 1,500 Hours

• Change hydraulic fluid and tank breather again

Every 2,000 Hours or 2 Years

• Flush and replace coolant
• Clean DEF strainer (ULS models)

Every 4,000 Hours or 3 Years

• Replace DEF pump filter (ULS models)

Every 5,000 Hours or 4 Years

• Perform engine valve lash adjustment

As-Needed Maintenance

• Replace damaged or leaking hydraulic hoses or fittings
• Replace worn forks, tires, or attachment pins
• Adjust track tension, service battery, and electrical issues
• Clean radiator, coolers, and perform DPF or SCR cleaning if needed

Final Maintenance Recommendations

Regular maintenance keeps your JLG 12054 operating safely and efficiently. For a full range of JLG 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.