JLG Triple-L Operator Manual - Manual (Page 27)

SECTION 2 - TRAILER OPERATION
3121224 – Triple-L-Trailer – 2-9
2. Raise the bottom surface of the coupler to be above
the top of the hitch ball. Use the tongue jack if one is
provided; otherwise, use wood or concrete blocks to
support the trailer tongue.
3. As seen in Figure 2-3., Coupler, slide the collar on
the hitch toward the trailer until it opens up to accept
the ball from the tow vehicle.
4. Once the hitch on the trailer is open, align the tow
vehicle up with the trailer hitch.
5. Using the tongue jack, lower the entire weight of the
trailer on to the ball hitch of the tow vehicle.
6. Slide the collar on the hitch toward the tow vehicle to
lock into place.
7. Insert the pin into the hole behind the collar to lock
the collar into place.
8. Be sure the coupler is all the way on the hitch ball
and the collar/locking mechanism is engaged. A
properly engaged locking mechanism will allow the
coupler to raise the rear of the tow vehicle. Using the
tongue jack, test to see that you can raise the rear of
the tow vehicle by 1 inch, after the coupler is locked
to the hitch.
OVERLOADING CAN DAMAGE THE TONGUE JACK. DO NOT USE
THE TONGUE JACK TO RAISE THE TOW VEHICLE MORE THAN 1
INCH.
NOTE: If the coupler cannot be secured to the hitch ball, do
not tow the trailer.
9. Retract the tongue jack until it is fully retracted.
Rig the Safety Chains
Visually inspect the safety chains and hooks for wear or
damage. Replace worn or damaged safety chains and
hooks before towing.
Rig the safety chains so that they:
a. Cross each other underneath the coupler.
b. Loop around a frame member of the tow vehicle
or to holes provided in the hitch system (DO
NOT attach them to an interchangeable part of
the hitch assembly).
c. Have enough slack to permit tight turns, but not
be close to the road surface, so if the trailer
uncouples, the safety chains can hold the
tongue up above the road.
FASTEN CHAINS TO FRAME OF TOW VEHICLE. DO NOT FASTEN
CHAINS TO ANY PART OF THE HITCH UNLESS THE HITCH HAS
HOLES OR LOOPS SPECIFICALLY FOR THAT PURPOSE.
CROSS CHAINS UNDERNEATH HITCH AND COUPLER WITH
ENOUGH SLACK TO PERMIT TURNING AND TO HOLD TONGUE
UP, IF THE TRAILER COMES LOOSE.
Attach and Test Electric Breakaway Brake
System
BEFORE TOWING, CONNECT THE BREAKAWAY CABLE TO THE
TOW VEHICLE; AND NOT TO THE HITCH, BALL OR SUPPORT.
TEST THE FUNCTION OF THE BREAKAWAY BRAKE SYSTEM. IF
THE BREAKAWAY BRAKE SYSTEM IS NOT WORKING, DO NOT
TOW THE TRAILER. HAVE IT SERVICED OR REPAIRED.
If the coupler or hitch fails, a properly connected and
working breakaway brake system will apply electric
brakes on the trailer. The safety chains will keep the tow
vehicle attached and as the brakes are applied at the
trailer’s axles, the trailer/tow vehicle combination will
come to a controlled stop.
The breakaway brake system includes a battery, a switch
with a pullpin, and a breakaway brake controller. Read
and follow the instructions here as well as the instructions
that have been prepared by the breakaway brake control-
ler manufacturer. If you do not have these instructions, call
JLG to obtain a copy.
The breakaway brake system may be fitted with a charg-
ing facility that draws power from the tow vehicle. If the
electrical system on your tow vehicle does not provide
power to the breakaway brake battery, you must periodi-
cally charge the battery to keep the breakaway brake sys-
tem in working order.
1. Connect the pull pin cable to the tow vehicle so that
the pullpin will be pulled out before all of the slack in
the safety chains is taken up. Do not connect the
pullpin cable to a safety chain or to the hitch ball or
hitch ball assembly. This would keep the breakaway
brake system from operating when it is needed.
2. Remove the pullpin from the switch and test tow the
trailer, at less than 5 m.p.h. You should feel the trailer
resisting being towed, but the wheels will not neces-
sarily be locked. If the brakes do not function, do not
tow the trailer until the brakes are repaired.
3. Immediately replace the pullpin. The breakaway
brake system battery discharges rapidly when the
pullpin is removed.