Chassis & Turntable; Breaking-In A New Trailer; Retighten Lug Nuts At First 10, 25 & 50 Miles; Adjust Brake Shoes At First 200 Miles - JLG T500J Service And Maintenance Manual

3.1

BREAKING-IN A NEW TRAILER

Retighten Lug Nuts at First 10, 25 & 50 Miles
Wheel lugs can shift and settle quickly after being first assem-
bled, and must be checked after the first 10, 25 and 50 miles
of driving. Failure to perform this check could result in a wheel
coming loose from the trailer, causing a crash leading to death
or serious injury.
CHECK LUG NUTS FOR TIGHTNESS ON A NEW TRAILER OR WHEN WHEEL(S)
HAVE BEEN REMOUNTED AFTER THE FIRST 10, 25 AND 50 MILES OF DRIVING.

Adjust Brake Shoes at First 200 Miles

Brake shoes and drums experience a rapid initial wear. The
brakes must be adjusted after the first 200 miles of use, and
each 3,000 miles thereafter. The brakes are adjusted manually.
Refer to section 3 for manual brake adjustment.

Synchronizing the Brake Systems

Trailer brakes are designed to work in synchronization with the
brakes on the tow vehicle. Do not use either brake system
alone to stop the combined tow vehicle and trailer.
When the tow vehicle and trailer braking systems are synchro-
nized, both braking systems contribute to slowing, and the
tongue of the trailer will neither dive nor rise sharply.
ROAD TEST THE BRAKES IN A SAFE AREA AT NO MORE THAN 30 M.P.H. BEFORE
EACH TOW.
To insure safe brake performance and synchronization, read
and follow the axle/brake and the brake controller manufac-
turers' instructions. If you do not have these instructions, call
your dealer or JLG to obtain a copy.
A hard stop is used to:
• Confirm that the brakes work
• Confirm that the trailer brakes are properly synchronized
with the tow vehicle brakes.
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SECTION 3. CHASSIS & TURNTABLE
3.2

Fasteners and Frame Members

Inspect all of the fasteners and structural frame members for
bending and other damage, cracks, or failure. Repair or replace
any damaged fastener and repair the frame member. If you
have any questions about the condition or method of repair of
fasteners or frame members, get the recommendation of, or
have the repair done by, your dealer.
The various fastener types used on your trailer are:
• Bolts, which are used mainly for attaching door and gate
• Buck Rivets, which are used to attach the sides and roof
• Huck Bolts may be at various locations on the sub-frame.
INSPECT FOR BROKEN OR DAMAGED FASTENERS, WELDS OR OTHER DAMAGED
PARTS AT LEAST ONCE A YEAR AND HAVE ALL DAMAGED PARTS REPAIRED OR
REPLACED.

Brake Shoes and Drums

Properly functioning brake shoes and drums are essential to
ensure safety. You must have your dealer inspect these com-
ponents at least once per year, or each 12,000 miles.
The brakes should be adjusted (1) after the first 200 miles of
operation when the brake shoes and drums have "seated," (2)
at 3000 miles intervals, (3) or as use and performance requires.
SECTION 3 - CHASSIS & TURNTABLE
TRAILER INSPECTION AND SERVICE
INSTRUCTIONS
hinges to the trailer body.
panels of the body to each other, and to the frame of the
trailer.
Huck bolts are not user serviceable. If you detect a loose
huck bolt fastener, do not tow the trailer. Call your dealer
for instructions.
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