SAF-HOLLAND XL-FW504 FW35-S09623 Series Fifth Wheel - Manual (Page 11)

XL-FW504 Rev A 11
Uncoupling Procedures
1. Set trailer brakes with tractor protection switch.
2. Back into the kingpin and set emergency brake on the tractor.
3. Block the trailer wheels.
4. Wind down the landing gears in high gear until they touch the ground. Shift to low
gear and crank a few extra turns. Do not raise the trailer off the fifth wheel. It may
be necessary to provide a base for the landing gear in poor parking conditions. Fold
down or remove the crank handle and place it in the crank handle holder.
5. Disconnect the light cord and brake lines. Attach the dummy air coupling to keep
foreign material from entering the brake lines.
6. Unlock the fifth wheel, including the manual secondary lock if so equipped.
7. Release the tractor emergency brake and pull out slowly from under the trailer. Let
the trailer slide down the fifth wheel and pick-up ramps, being careful that the
trailer landing gear touches the ground with minimal impact.
NOTE: When uncoupling the Type A fifth wheel, it is normal for the release handle to
move to the closed position. It is not necessary to pull the release handle to recouple.
Sliding Procedure for a Sliding Fifth Wheel
1. Stop the tractor and trailer in a straight line on level
ground. Lock the trailer brakes.
The trailer must be stopped and the trailer
brakes locked to prevent damage to the
tractor or trailer by uncontrolled sliding of the fifth wheel.
2.
Release slide locking plungers as detailed below for
the type of slide release:
A. Air Slide Release - put cab control valve to the
unlock position.
B. Manual Slide Release - pull release lever. See
FIGURE 3.
3. Check to see that both plungers have released as
shown in FIGURE 3 and 4. If plungers do not come
out, lower the landing gear to relieve pressure on
the plungers. This also allows the fifth wheel to slide
easier.
4. Drive the tractor forward or backward slowly to
position the fifth wheel.
5. After sliding the fifth wheel to the desired setting,
engage the slide locking plungers as below:
A. Air Slide Release - put control valve in lock
position to retract plungers.
B. Manual Slide Release - trip release arm to allow
plungers to retract.
6. Visually check to see that both plungers are retracted
and fully engaged. Leaving the trailer brakes locked
and moving the tractor slightly may be necessary to
engage the plungers in the rack teeth. Raise the
landing gear to the fully retracted position.
Do not operate the vehicle if the plungers are not fully engaged and
landing gears are not fully retracted, as damage to the tractor, trailer,
and landing gears may occur.
OPERATING INSTRUCTIONS
continued
UNLOCKED
(RELEASED)
LOCKED
(ENGAGED)
FIGURE 4
AIR SLIDE RELEASE
UNLOCKED
(RELEASED)
LOCKED
(ENGAGED)
FIGURE 3
MANUAL SLIDE RELEASE