33
raised too high.
8.
Once proper trailer height is reached,
apply the tractor parking brake. Now
hook BOTH the trailer emergency and
service airlines to the trailer (blue & red
airlines) and plug in the trailer electrical
cable.
9.
With the brake treadle FULLY applied,
push in BOTH the parking brake control
(yellow) and the trailer air supply (red),
this will charge the trailer air supply and
release the trailer spring/parking brakes.
10.
After the tractor air system is fully
charged, move the transmission shift lever
to the proper gear and release pressure on
the foot operated brake treadle and allow
the vehicle to roll a VERY SHORT distance
and then depress the brake treadle again
to stop the vehicle. This procedure will
insure that the service brakes on the trailer
are working properly. NOW, and ONLY
NOW, are you ready to move (“SPOT”)
the trailer.
11.
Once the trailer is relocated and
the vehicle combination is completely
stopped, place the shift lever in NEUTRAL
and pull out on the trailer air supply
control (red). This will apply the trailer
parking brakes only. The parking brake
control (yellow) should remain “in”, with
the tractor parking brake released.
12.
Using the boom control lever, lower
the trailer until the trailer supports are
resting completely on the ground.
13.
Disconnect and STORE the air lines
and electrical cable.
14.
DEPRESS and HOLD the fifth wheel
unlatch control valve as you slowly pull
away from the trailer. Once the fifth wheel
is completely clear of the kingpin, release
the fifth wheel unlatch control and go the
next trailer.
WARNING - When the trac-
tor is operated on public
streets or highways, the
5th wheel manual sec-
ondary lock MUST be engaged.
The secondary lock is engaged by
removing the hairpin clip on the
lock handle allowing the lock to
pivot behind the locking yoke. The
fifth wheel MUST be in the DOWN
position to operate the vehicle on
public streets or highways.
WARNING - Never raise
or lower the boom while
the vehicle has a trailer at-
tached and is in motion.
WARNING - DO NOT
EXCEED 15 MPH WHEN
TOWING TRAILERS. Op-
erating at speeds in excess
of 15 MPH may lead to loss of
vehicle control. NEVER take turns
at excessive speeds, this may cause
the vehicle and trailer to roll over.
The majority of roll over accidents
are caused by excessive corner-
ing speed. ALWAYS SLOW WHEN
CORNERING. Roll over accidents
may lead to serious injury or death.
WARNING - Never tow
trailers without BOTH the
service and emergency brake
lines connected to the trailer.
Never tow trailers without functioning
service and emergency brake systems.
Operating the vehicle while towing
trailers without functioning trailer brake
systems may lead to loss of control of
the vehicle, serious injury or death.
Operation
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