Monaco 2002 Diplomat, Service Manual

Page: 52 / 324

NOTE: The most accurate method to determine proper tire
pressure is a four corner weigh. A slide-out motorhome will
require each tire to be weighed independently. Weighing an
axle will net the total weight carried by that axle. When
calculating the drive axle dual tire pressure using a independent
corner weigh method, divide the total weight by two to deter-
mine the weight carried by each tire. When weighing the
entire drive axle, divide the total weight by four to deter-
mine the approximate weight carried by each tire.
Example:
The motorhome must be weighed fully loaded to obtain accurate scale
readings and to determine the proper tire pressure.
• Take the rear axle Gross Axle Weight Rating (GAWR) and divide
it by two. Record the figure next to scale B & D, GAWR ÷ 2.
Example: If rear axle GAWR is 13,000 lbs. GAWR ÷ 2 would be
6,500 lbs.
• Weigh the driver’s side rear corner (scale B) and record the scale
reading next to Gross Axle Weight (GAW) for scale B. Example:
Scale B reading is 5,100 lbs.
• Repeat procedure for the rest of the scale readings.
• Add the GAWR from scales B and D and enter the sum next to the
final GAWR. Example 13,000.
• Add the GAW from scales B and D and enter this sum next to the
final GCAW. Example: 10,000.
• Compare scale readings GCAW against GAWR readings. All figures
on line 2 are not to exceed figures on line 1.
• Use tire chart with scale reading to determine correct tire pressure.
NOTE: Scale readings and Gross Axle Weight Ratings are fic-
titious. Actual scale readings and Gross Axle Weight Ratings
will vary with model and options.
Driving & Safety
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D I P L O M A T
2 • 5 2
1. GAWR ÷ 2 (6,500)
2. GAW (5100)
+
1. GAWR ÷ 2 (6,500)
2. GAW (4,900)
Scale
B
Scale
D
=
2. GCAW (10,000)
1. GAWR (13,000)
Rear
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