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Loading And Unloading
5. Loading And Unloading
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Improper trailer loading causes many accidents and deaths. To safely load a trailer, you must consider:
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Overall load weight.
Load weight distribution.
Proper tongue weight.
Securing the load properly.
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WARNING
Do not transport people in your trailer.
Besides putting their lives at risk, the transport of people in a trailer is illegal.
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DANGER
You can die or be brain damaged by
Carbon Monoxide.
To determine that you have loaded the trailer within its rating, you must consider the distribution of weight, as well as the total weight of the trailer and its contents.
The trailer axles carry most of the total weight of the trailer and its contents (Gross Vehicle Weight, or
“GVW”). The remainder of the total weight is carried by the tow vehicle hitch.
Do not operate a generator, portable grills, portable heaters, portable lanterns or portable stoves inside the trailer.
It is essential for safe towing that the trailer tongue and tow vehicle hitch carry the proper amount of the loaded trailer weight, otherwise the trailer can develop an undesirable sway at towing speeds, or the rear of the towing vehicle can be overloaded. Read the
“Tongue Weight” information in Section 4.
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WARNING
Do not sleep in a trailer not equipped with living quarters.
The load distribution must be such that no component part of the trailer is loaded beyond its rating. You must consider the rating of the tires, wheels and axles. For tandem and triple axle trailers, you must make sure that the front-to-rear load distribution does not result in overloading any axle.
Towing stability also depends on keeping the center of gravity as low as possible. Load heavy items on the fl oor and over the axles. When loading additional items, be sure to maintain even side-to-side weight distribution and proper tongue weight. The total weight of the trailer and its contents must never exceed the total weight rating of the trailer (Gross
Vehicle Weight Rating, or “GVWR”).
A trailer not designed with living quarters must only be used for transportation of its intended cargo.
5.1 Loading Trailer
5.1.1 Preparing Trailer For Loading
Open windows and vents to provide ventilation. Open feed doors for ventilation, only if equipped with safety bars or netting that covers the feed door opening, which must be closed.
Consider the weather and transport conditions. On warm sunny days, maximum ventilation is required.
Do not transport people, containers of hazardous substances, or flammable liquids. The exception is fuel in the tank of vehicles or equipment being hauled.
Do not carry a horse without providing ventilation, even in coldest weather. Ventilation is critical for the well being of your horses. Know your horses and adjust ventilation for your horses’ comfort.
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WARNING
Do not transport fl ammable, explosive, poisonous or other dangerous materials on your trailer.
Be sure pivoting window latches are in a fl ush position, so they do not present a protrusion that can injure your horse.
Tighten any loose or protruding screws in the walls.
The exception is fuel in the tank of equipment being hauled.
Remove or secure loose objects, (i.e. butt bars, saddles, tack and equipment) so that items will not move during towing.
Inspect for cracks at the welds on the divider hinges,
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Table of contents
- 5 1. Introduction
- 6 2. Safety
- 6 2.1 Safety Alert Symbols And Signal Words
- 6 2.2 Major Hazards
- 6 2.2.1 Improper Sizing Of Trailer To Tow Vehicle
- 6 2.2.2 Driving Too Fast
- 7 2.2.3 Adjust Driving When Towing Trailer
- 7 2.2.4 Trailer Not Properly Coupled To Hitch
- 8 2.2.5 Proper Use Of Safety Chains
- 8 2.2.6 Proper Connection Of Breakaway Brake
- 8 2.2.7 Matching Trailer And Hitch
- 8 2.2.8 Worn Tires, Loose Wheels And Lug Nuts
- 9 2.2.9 Improper Loading
- 10 2.2.10 Unsafe Load Distribution
- 10 2.2.11 Shifting Cargo
- 10 2.2.12 Inappropriate Cargo
- 11 2.2.13 Hazards To Horses
- 11 2.2.14 Inoperable Brakes Or Lights
- 12 2.2.15 Trailer Modifications
- 12 2.2.16 Trailer Towing Guide
- 13 2.2.17 Safe Trailer Towing Guidelines
- 14 2.2.18 Safety Warning Labels On Your Trailer
- 17 2.2.19 Reporting Safety Defects
- 18 3. Tire Safety Information
- 18 3.1 Trailer Tire Information
- 19 3.2 Steps For Determining Correct Load Limit - Trailer
- 19 3.2.1 Trailers 10,000 Pounds GVWR Or Less
- 19 3.2.2 Trailers Over 10,000 Pounds GVWR
- 20 3.3 Steps For Determining Correct Load Limit - Tow Vehicle
- 20 3.4 Glossary Of Tire Terminology
- 22 3.5 Tire Safety - Everything Rides On It
- 23 3.5.1 Safety First- Basic Tire Maintenance
- 23 3.5.2 Finding Your Vehicle’s Recommended Tire Pressure And Load Limits
- 23 3.5.3 Understanding Tire Pressure And Load Limits
- 23 3.5.4 Safety First- Basic Tire Maintenance
- 23 3.5.5 Steps For Maintaining Proper Tire Pressure
- 24 3.5.6 Tire Size
- 24 3.5.7 Tire Tread
- 24 3.5.8 Tire Balance And Wheel Alignment
- 24 3.5.9 Tire Repair
- 24 3.5.10 Tire Fundamentals
- 24 3.5.10.1 Information on Passenger Vehicle Tires
- 25 UTQGS Information
- 25 Additional Information On Light Truck Tires
- 26 Tire Safety Tips
- 27 4. Coupling To Tow Vehicle
- 27 4.1 Tow Vehicle And Hitch
- 27 4.1.1 Trailer Information
- 27 4.1.2 Tow Vehicle
- 27 4.2 Coupling And Uncoupling The Trailer
- 28 4.3 Couple Trailer To Tow Vehicle
- 28 4.3.1 Ball Hitch Coupler
- 29 4.3.1.1 Before Coupling Trailer To Tow Vehicle
- 29 4.3.1.2 Prepare Coupler And Hitch
- 29 4.3.1.3 Couple Trailer To Tow Vehicle
- 30 4.3.2 Trailer With Ring And Pintle Coupler
- 30 4.3.2.1 Before Coupling Trailer To Tow Vehicle
- 30 4.3.2.2 Prepare Ring And Pintle
- 31 4.3.2.3 Couple Trailer To Tow Vehicle
- 31 4.3.3 Connect Safety Chains
- 32 4.3.4 Connect Electrical Cable
- 32 4.3.5 Attach Breakaway Brake Lanyard
- 32 4.3.5.1 Test Electric Brakes
- 32 4.3.5.2 Test Electric Breakaway Brakes
- 33 4.3.5.3 Test Surge Brakes (If Equipped)
- 34 4.3.5.4 Test Surge Breakaway System
- 34 4.4 Uncouple Trailer
- 34 4.5 Tongue Weight
- 35 4.5.1 Checking Tongue Weight
- 35 4.6 Adjust Hitch Height (If Equipped)
- 37 5. Loading And Unloading
- 37 5.1 Loading Trailer
- 37 5.1.1 Preparing Trailer For Loading
- 38 5.1.2 Loading A Horse Trailer
- 40 6. Pre-Tow Checklist
- 40 6.1 Pre-Tow Checklist
- 40 6.2 Make Regular Stops
- 41 7. Breaking In A New Trailer
- 41 7.1 Retighten Lugs At First 10, 25 & 50 Miles
- 41 7.2 Adjust Brake At First 200 Miles
- 41 7.3 Synchronizing Brake Systems
- 42 8. Accessories
- 42 8.1 Accessory Battery
- 43 9. Inspection, Service And Maintenance
- 43 9.1 Inspection, Service & Maintenance Summary Charts
- 46 9.2 Inspection And Service Instructions
- 46 9.2.1 Trailer Structure
- 46 9.2.1.1 Fasteners And Frame Members
- 46 9.2.1.2 Welds
- 46 9.2.2 Trailer Brakes - Electric
- 46 9.2.2.1 Brake Shoes And Drums
- 47 9.2.2.2 Manually Adjusting Brake Shoes
- 47 9.2.2.3 Electric Brakes
- 47 9.2.2.4 Tow Vehicle Operated Electric Brakes
- 47 9.2.2.5 Electric Brake Magnets
- 47 9.2.3 Trailer Brakes - Surge (If Equipped)
- 47 9.2.3.1 Surge Brake Master Cylinder
- 48 9.2.3.2 Hydraulic Surge Brake
- 48 9.2.3.3 Master Cylinder Bleeding
- 48 9.2.4 Trailer Connection To Tow Vehicle
- 48 9.2.4.1 Coupler And Ball
- 49 9.2.4.2 Ring And Pintle
- 49 9.2.5 Landing Leg Or Jack
- 49 9.2.6 Lights And Signals
- 49 9.2.7 Wheel Rims
- 49 9.2.8 Tires
- 50 9.2.9 Wheel Bearings
- 50 9.2.10 Lubrication
- 50 9.2.11 Hydraulic Reservoir
- 50 9.2.12 Lug Nuts Or Bolts