The tongue load of any trailer is an important weight to measure because it affects the total gross vehicle weight (GVW) of your vehicle. This weight includes the curb weight of the vehicle, any cargo you may carry in it, and the people who will be riding in the vehicle. And if you will tow a trailer, you must add the tongue load to the GVW because your vehicle will also be carrying that weight.
The trailer tongue should weigh a maximum of 10% of the total loaded trailer weight, within the limits of the maximum permissible trailer tongue load. After you've loaded your trailer, weigh the trailer and then the tongue, separately, to see if the weights are proper. If they aren’t, you may be able to correct them simply by moving some items around in the trailer.
WARNING - Trailer
Always follow the loading instructions provided with your trailer. Improper loading can effect vehicle operation and result in an accident.
Repair procedures
Operation and Leakage Check
Check all of the following items:
ComponentProcedureBrake Booster (A)Check
brake operation by applying the brakes during a test drive. If the
brakes seem hard to ...
Speedometer
Type A
Type B
The speedometer indicates the forward speed of the vehicle.
The speedometer is calibrated in kilometers per hour and/or miles per hour. ...