66
Draw Bar Pull
The power plant of the Universal Jeep is particularly well adapted to the great variety of applications of the Jeep.
For higher speed highway use, and draw bar pull requirements for towing loads, the full engine power is available;
for power take-off shaft and pulley drive, the full engine torque (turning effort) is available.
Draw bar pull is the force exerted by a vehicle to tow a trailed load and is expressed in pounds.
For continuous agricultural work, the maximum draw bar pull should be limited to 1200 pounds (544 Kg.). The
Universal Jeep is capable of much higher draw bar pulls than the 1200 pounds (544 Kg.) approved for continuous
service, which may be used for starting loads or towing loads for short periods on good ground in which case a
draw bar pull as high as 1800 pounds (817 Kg.) may be safely used.
Maximum continuous draw bar pulls are most often encountered in plowing, disking and harrowing and it is in
these applications that the owner should guard against continuously exceeding the recommended limit.
The approved limit of 1200 pounds (544 Kg.) may be judged by the following operations which nearly approach
this limit:
Operating two 12 inch (30.5 cm.) plows at a depth of 6’2 inches (16.5 cm.) in dry clay loam.
Operating a 7 foot (2.13 meter) tandem disk at a depth of 412 inches (11.4 cm.) in hard winter packed soil.
Operating a 3-section spring tooth harrow at a depth of 5 inches (12.7 cm.) in soil which has been previously
disked.
It is expected that, either on account of soil conditions or implement adjustments, these draw bar pulls will be
exceeded. In these instances, tire slippage provides an inherent safeguard against overloading. Do not add weight,
other than the standard bumper weight, Page 61, to equalize traction on all four wheels to increase draw bar pull.
Full information is given in the charts on Page 70 of horsepower at the drawbar and also, at the power take-off
splined shaft under various operating conditions.
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