Before operating a jockey truck, it's crucial to perform a pre-operation safety check to prevent potential hazards [1]. Here's what to include in your inspection:

• Warning Tags: Check for any warning tags indicating the machine is inoperable. Do not start the engine if tags are present; report to a supervisor 1, 4.
• General Condition: Ensure all parts, equipment, and accessories are in safe operating condition and free of damage [2]. This includes checking service brakes, parking system, emergency stopping system, tires, horn, steering mechanism, coupling devices, seat belts, operating controls, and safety devices [2].
• Fluid Levels: Check the engine oil level and hydraulic system oil level 5, 7, 8, 9, 10, 11, 13, 17.
• Leaks: Watch closely for any leaks in the cooling system, hydraulic system, final drives, and swing drive 2, 3, 5, 7, 8, 9, 10, 11, 13, 17, 19. Inspect the tank, cylinder rod seals, hoses, tubes, plugs, connections, and fittings 2, 3, 5, 7, 8, 9, 10, 11, 13, 17, 19.
• Belts and Hoses: Inspect all belts for engine attachments for wear, fraying, or breakage. Check tubes and hoses for wear and leaks 2, 3, 5, 7, 8, 9, 10, 11, 13, 17, 19.
• Cooling System: Inspect the cooling system for leaks, faulty hoses, and trash buildup. Remove any trash from the radiator 2, 3, 5, 7, 8, 9, 10, 11, 13, 17.
• Lights and Mirrors: Inspect lights for broken bulbs and lenses. Adjust mirrors for maximum visibility 2, 3, 5, 7, 8, 9, 10, 11, 13, 17, 19.
• Steps, Walkways, and Handholds: Inspect and clean steps, walkways, and handholds, making any necessary repairs 2, 3, 19.
• Operator Compartment: Check for and remove any trash buildup in the operator compartment 2, 3, 19.
• Seat Belt: Check the seat belt for cuts, fraying, and proper function of the mounting hardware. Replace if necessary 2, 3, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18.
• Covers and Guards: Make sure all covers and guards are securely attached and inspect them for damage 2, 3, 19.
• Attachment: Inspect the attachment control linkage, cylinders, and attachment for damage or excessive wear 2, 3, 5, 7, 8, 9, 10, 11, 13, 17.

Correct any defects before placing the vehicle in service [2]. Report any issues to a supervisor and do not start the engine until warning tags are removed 1, 4.