John Deere 400CX Operator's Manual
![John Deere 400CX Loader manual cover](/images/gSVFUPAQPSsHbsUXZRoPhAaD/thumbs/thumb175x175.webp)
Ensure your tractor is on a level surface. Align the loader with the mounting frames, then slowly drive the tractor forward until the loader arms are aligned with the mount points. Secure with the locking pins and connect the hydraulic hoses.
Perform a visual inspection before each use, checking for cracks or wear. Lubricate all grease points every 10 hours of operation. Inspect hydraulic hoses and fittings every 50 hours. Perform a comprehensive check annually.
First, check the hydraulic fluid level and refill if necessary. Inspect hoses for leaks or damage. If the loader is slow or unresponsive, there might be air in the system or a clogged filter. Bleed the system if needed and replace filters as per the manual.
Park the tractor on a flat surface and lower the loader to the ground. Disconnect the hydraulic hoses, ensuring they are free of pressure. Remove the locking pins and slowly back the tractor away from the loader, ensuring it rests securely on the ground.
Check the hydraulic fluid level and refill if low. Inspect the hydraulic pump and relief valve for proper operation. Ensure the control levers are functioning correctly. If these are all fine, the problem may be a faulty cylinder or blocked hydraulic line.
Regular maintenance is key. Ensure all moving parts are well-lubricated, keep hydraulic fluid at optimum levels, and use the loader within its specified capacity limits. Installing counterweights may also improve stability and performance.
To bleed the hydraulic system, ensure the tractor is off and hydraulic lines are depressurized. Loosen the bleeder screw on the hydraulic cylinder and allow air to escape until only fluid is expelled. Tighten the screw and refill the hydraulic fluid if necessary.
Hydraulic fluid should be checked regularly and changed every 400 hours of operation or as specified in the operator's manual. Always use the recommended fluid type for optimal performance.
When operating on uneven terrain, reduce speed and avoid sudden movements. Keep the load low to the ground to maintain stability. Be aware of the loader's center of gravity and use ballast to counterbalance heavy loads.
Signs of a worn hydraulic pump include unusual noise, sluggish operation, and overheating. Check for leaks around the pump area and inspect the hydraulic fluid for contamination. If these symptoms occur, the pump may need repair or replacement.