SECTION 2 — DRIVING & SAFETY
42
CAMELOT 2007
Understanding the Ination Table:
Tire Size is on the left margin of the
Table.
Determine the “Single” ination reading
or “Dual” ination reading. This is
denoted with a “D” or “S” on the Table.
Single is for the Front axle. Dual is for
the Drive axle.
Find the corresponding psi at the top
columns to see the corresponding
maximum weight capacity for that psi.
NOTE
Every load range has a maximum rating
as well as a minimum rating. Do not
exceed those ratings.
Rated load capacities are listed for
individual tires in a Dual or Single
position.
Cargo Carrying Capacity:
When weighing the motorhome it is important
to understand that each motorhome, even of
the same model year, oorplan and length will
weigh different due to options and accessories.
The
Gross Vehicle Weight Rating (GVWR),
Gross Combination Weight Rating (GCWR)
and/or
Gross Axle Weight Rating (GAWR)
must not be exceeded.
GVWR limits the weight of the entire load
combination, regardless of the water, LP-Gas,
passengers and cargo weight.
It is important to understand that the weighing
process is performed in two phases. First, by
determining the
Cargo Carrying Capacity
(CCC); and second, to ensure the GVWR is
not exceeded when adjusting tire pressures. The
weighing process should start by recording the
GVWR from the Federal Weight Label, then
weighing the motorhome unloaded, without
passengers and with a full fuel tank. Engine
and transmission uid levels must be full. This
is known as the Unloaded Vehicle Weight
(UVW). Once this weight has been recorded it
can be subtracted from the
GVWR.
GVWR 22,500 - UVW 14,300
= A
8,200
Next, begin to calculate the Cargo Carrying
Capacity (CCC). Fresh water weight and
LP-Gas weight can now be subtracted from the
remaining total line A.
Water weight is the number of gallons
multiplied by 8.3.
LP-Gas weight is the number of gallons
multiplied by 4.2.
A 10-gallon water heater with a 40-gallon
fresh tank would total 50 gallons times 8.3, or
415 lbs. A 30-gallon LP-Gas tank will have 24
gallons of LP-Gas due to the 80% valve. This
would mean 24 gallons multiplied by 4.2, or
100.8 lbs.
A 8,200 - 581 = B 7,619
B 7,619 - 100.8 = C 7,518.2
Next, calculate the Sleep Capacity Weight
Rating (SCWR) the manufacturer’s designated
number of sleeping positions for the motorhome
multiplied by 154 lbs.
The 154 lbs. (70kg) is the average weight
established by the U.S. Federal Government and
Transport Canada, and is used to arrive at Cargo
Carrying Capacity (CCC). However, actual sleep
capacity weight may be greater. The SCWR is
not intended to limit the sleeping capacity to a
specied weight.
Example: If the manufacturer has designated
the motorhome sleeping position at 4 (616 lbs.)
and there are four people who weigh 200, 200,
178 and 138 lbs., totaling 716 lbs., that doesn’t
mean the sleeping capacity is reduced to three
individuals, but rather the CCC is reduced by 100
lbs. due to the actual passenger weight.
Cargo Carrying Capacity (CCC) is how
much cargo the motorhome can carry. However,
tongue weight of a towed vehicle will further
reduce this amount.
Now the motorhome can be fully loaded and
weighed to ensure
GVWR is not exceeded.
Once the motorhome is fully loaded it is ready to
be weighed to obtain an accurate scale reading
and determine the proper tire pressure. All slide
rooms must be in the retracted position when
weighing the motorhome. The motorhome must
remain as level as possible on the scale, even
when an axle or side is not physically on the
scale.
Each wheel position must be weighed to
accurately determine the weight carried
at each wheel position.
C 7,518.2 - SCWR 770 = CCC 6,748.2
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