Section 7 : Specications
7-2 5376000253
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SAE J2512: Surface Vehicle Recommended Practices - Towing Equipment
Ratings and Practices
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SAE J706: Surface Vehicle Recommended Practices - Rating of Winches
MAXIMUM LIFTING CAPACITY - THE MAXIMUM LOAD THAT CAN BE LIFTED.
GROSS COMBINED WEIGHT RATING (GCWR) - THE VALUE SPECIFIED BY THE
VEHICLE MANUFACTURER AS GCW.
GROSS TRAILER WEIGHT (GTW) - THE MAXIMUM TRAILER WEIGHT WITH
LOAD.
GROSS COMBINED WEIGHT (GCW) - ACTUAL WEIGHT OF THE MPL VEHICLE
AND RECOVERED VEHICLE INCLUDING EQUIPMENT, DRIVER, PASSENGER,
FUEL AND PAYLOAD (EVERYTHING THAT MOVES WITH THE VEHICLE).
NOTE
These ratings apply to the structural design of the MPL only and may be limited
by the axle rating and gross vehicle weight rating of the truck chassis.
The payload and towing capacity of any towing vehicle must meet the following:
• The actual payload on the towing vehicle must not exceed the posted
rating and the towed vehicle load must not exceed the posted lift / towing
ratings.
• The total weight of the towing vehicle (cab chassis, body, payload, driver,
passenger(s), tools, fuel, etc.) and the towed vehicle load must not exceed
the GVWR (Gross Vehicle Weight Rating) of the towing vehicle.
• The total weight of the towing vehicle and a towed vehicle load must be
distributed so that each axle’s GAWR (Gross Axle Weight Rating) is not
exceeded.
• The total weight of the towing vehicle and towed vehicle (everything
that moves with the towing vehicle) must not exceed the GCWR (Gross
Combination Weight Rating) of the towing vehicle.
Staying within these ratings is necessary to maintain the safety and performance
of the towing vehicle.
CHECK TRUCK MANUAL FOR SPECIFIC GVW & AXLE RATINGS. ALSO
LOOK AT THE CERTIFICATION DECAL AFFIXED TO DRIVER’S SIDE
DOOR JAMB, HINGE PILLAR OR LATCH POST AND THE STRUCTURAL
CAPACITIES PLACARD ON THE UNIT.
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