TM-9-2320-273-10
TRUCK, TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER
TECHNICAL MANUAL; OPERATOR’S MANUAL
DECEMBER 2012
TM-9-2320-273-10 - Page 200 of 452
M915 FIFTH WHEEL OPERATION
WARNING
All personnel must stand clear of tractor and trailer during
coupling operations. Failure to comply may result in injury
or death to personnel. Seek medical attention in the event of
an injury.
The M915 line haul tractor is equipped with a 36 in. (91.4 cm) fore and aft oscillating
fifth wheel for use with a 2 in. (50.8 mm) kingpin. The single oscillating fifth wheel
will pitch 15 degrees forward and 10 degrees aft. It is rated at 40,000 lb (18,144 kg)
vertical load and 150,000 lb (68,000 kg) drawbar pull. There are two manual kingpin
lock release handles on the right side of the fifth wheel as shown in figure 1. The
primary release handle must be pulled first before releasing the secondary handle to
uncouple the trailer.
END OF TASK
Figure 1. M915 Fifth Wheel Controls.
PRIMARY RELEASE
SECONDARY RELEASE
HANDLE
HANDLE
LOCK GUARD
TM 9-2320-273-10
0012
0012-2
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