THOR Class C Series Owner's Manual page 127

TOW RATING
The maximum weight that a vehicle can tow.
Usually related to overall RV weight and not
size.
TOW VEHICLE
Used to tow an RV. Some RVs require trucks
as tow vehicles, while others can be towed
with lighter vehicles.
UNDERBELLY
The exterior floor of the RV, typically
protected by weatherproofed material.
UNLOADED VEHICLE WEIGHT (UVW)
The weight of an RV without fuel or propane,
water, passengers, and gear.
UTQGL (UNIFORM TIRE QUALITY
GRADE LABELING)
A program that is directed by the government
to provide consumers with information
about three characteristics of the tire: tread
wear, traction, and temperature. Following
government prescribed test procedures, tire
manufacturers perform their own evaluations
for these characteristics. Each manufacturer
then labels the tire, according to grade.
UV DEGRADATION
A breaking down of material due to the sun's
harsh ultraviolet rays.
WASTE WATER TANKS
Holding tanks for gray water and black
water, including the waste from sinks,
showers, and toilets.
T H O R M O T O R C O A C H
WATER PRESSURE REGULATOR
Device (customer supplied) installed on the
water hose attached to city water to limit
the water pressure entering the RV. Most
regulators limit water pressure to 40 psi.
WEEKENDERS
People who own their RV's for weekend and
vacation use.
WEIGHT & LOAD
These terms are generally used
interchangeably. For the purposes of
understanding RV applications, vehicles
have WEIGHT, which impart LOADS to
tires, axles, and hitches. Scale measurements
taken when weighing are LOADS carried by
the tires. These measured loads are used to
calculate Gross Vehicle Weight (GVW), Gross
Axle Weight (GAW), Gross Combination
Weight (GCW), and hitch loads.
WEIGHT-CARRYING HITCH/DEAD
WEIGHT HITCH
A hitch that bears the entire hitch weight of
the RV.
WET WEIGHT
The weight of an RV when fuel and fresh
water tanks are full.
Note:
• Propane weighs 4.25 pounds per gallon
• Water weighs 8.3 pounds per gallon
• Gasoline weighs 6.3 pounds per gallon
• Diesel fuel weighs 6.6 pounds per gallon
| M A D E T O F I T
WINTERIZED
Preparing an RV for winter/cold weather use
or outdoor storage.
G L O S S A R Y
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