446B Backhoe Loader Caterpillar


Walk-Around Inspection

Usage:

446B 5BL


NOTICE

Accumulated grease and oil on a machine is a fire hazard. Remove this debris with steam cleaning or high pressure water, at least every 1000 hours or each time any significant quantity of oil is spilled on a machine.


Note: Inspect the machine for leaks. If leaks are observed, find the source of the leak and correct the leak. If leaks are suspected, check the fluid levels more frequently than the recommended intervals. If leaks are observed, check the fluid levels more frequently than the recommended intervals.




Illustration 1g00107141

Inspect the backhoe bucket (14) for damage or for excessive wear. Inspect the backhoe linkage (1) for damage or for excessive wear. Repair the bucket or the linkage, if necessary. Replace any bucket teeth, if necessary.

Inspect the loader bucket (9) for damage or for excessive wear. Inspect the linkage (8) for damage or for excessive wear. Repair the bucket or the linkage, if necessary. Replace any bucket teeth, if necessary.

Inspect the transmission (13) for leaks. Inspect the torque converter for leaks. Correct any leaks. Check the hoses around the transmission.

Inspect the hydraulic system for leaks. Inspect the hydraulic tank (7), cylinder rod seals, hoses and tubes. Also inspect plugs, couplings and fittings. Correct any leaks.

Inspect the engine compartment (5) for trash buildup. Remove any trash buildup that is in the engine compartment. Clean the screens on the engine access doors.

Inspect the belts for the engine attachments (12) for worn belts, for cracked edges or for frayed edges. Replace any damaged belts.

Inspect the cooling system for leaks, for faulty hoses, and for trash buildup. Correct any leaks and remove any trash buildup from the radiator (6) .

Inspect the tires (10) for damage and for proper inflation. Replace any missing valve caps. Tighten any loose bolts.

Inspect the axles (11) for leaks. Inspect the front differential for leaks and the rear differential for leaks.

Check the torque on new wheels or repaired wheels. Refer to Operation and Maintenance Manual, "Wheel Nut Torque - Check".

Inspect the engine precleaner bowl (4) for dirt buildup. Remove the dirt from the precleaner bowl when the dirt has accumulated close to the "FULL" line on the precleaner bowl.

Service the air filter elements when the yellow piston enters the red zone on the filter service indicator.

Inspect the steps and handholds (2). These objects must be clean. Also, these objects must be in good condition. Inspect the Rollover Protective Structure (ROPS) for damage. Notify your Caterpillar dealer for repairs, if necessary. Tighten any loose bolts on the ROPS.

Make sure that the access covers and the guards are secured. Inspect the access covers for damage and the guards for damage.

Inspect the lights (3) for broken bulbs and for broken lenses. Replace the bulbs or lenses, if necessary.

Inspect the operator's compartment for cleanliness. Keep the operator's compartment clean.

Adjust the rearview mirrors for best visibility.

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