I'll get a less glamorous one started, and add to it later.
Vehicle/ trailer checks.
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Weekly Checks: Oil, coolant, transmission fluid, brake fluid, tires, lights.
Driver's Responsibility to check that:
The coupler is secure on the ball/ pintle ring and pinned, double checked for the coupler grabbing around the ball rather than sitting on top, safety chains are crossed and secure, lights are hooked up. Lights are checked for function occasionally.
All cabinet door/ tool boxes are secured.
All paths are clear before moving vehicle by walking around and doing a visual check.
Gauges are indicating safe operating conditions.
Trailer loading:
Aim for 10% tongue weight, and balanced side to side.
All things are fastened appropriately,
any loose tie-down straps are secured so that they don't tangle in the wheels or flap around unnecessarily.
General Maintenance:
Look for drips/ leaks under the truck.
Conduct a general walk around looking at the vehicle for damage, anything loose, all tool boxes and doors secured, nothing under vehicle or in path of travel.
Check for emergency gear present--flares, reflective vest, reflective triangle, jack, spare tire has air, can of Truck FixaFlat, jumper cables, extra engine oil, tool kit
vehicle checklist filled out and initialled
When driving a trailer, give extra braking room, be sure to use appropriate gears, turn wide, accelerate slower, watch for anything blowing out if you have a loose load such as leaves (though it will be tied down).
Always use a spotter/ guide for backing the vehicle if one is available. Passenger will automatically get out to spot/guide driver using standard, loud verbal commands including "more driver's side", "more passenger side", "follow that through", "straight back", "you have 'x'feet", "you are all clear"