JLG Triple-L Operator Manual - Manual (Page 58)

SECTION 4 - SERVICE AND MAINTENANCE
4-18 – Triple-L-Trailer – 3121224
Tire Wear
Replace the tire before towing the trailer, if the tire treads
have less than 1/16-inch depth or the telltale bands are
visible. The following tire wear diagnostic chart will help
you pinpoint the causes and solution of tire wear prob-
lems.
The following tire wear diagnostic chart will help you pin-
point the causes and solution of tire wear problems.
A bubble, cut or bulge in a sidewall can result in a tire
blowout. Inspect both sidewalls of each tire for any bub-
ble, cut or bulge; and replace a damaged tire before tow-
ing the trailer.
NOTE: Tire wear is not covered under warranty!
WORN, DAMAGED OR UNDER-INFLATED TIRES CAN CAUSE
LOSS OF CONTROL, RESULTING IN DAMAGE, SERIOUS INJURY
AND POSSIBLY DEATH. INSPECT TIRES BEFORE EACH TOW.
Tire Repair
The proper repair of a punctured tire requires a plug for
the hole and a patch for the area inside the tire that sur-
rounds the puncture hole. Punctures through the tread
can be repaired if they are not too large, but punctures to
the sidewall must be repaired. Tires must be removed
from the rim to be properly inspected before being
plugged and patched.
Tire Replacement
A replacement tire must be the same size, ply rating and
load range as originally installed on the trailer. Please refer
to the VIN Label/Tire Information Label for correct tire
information.
Tire Fundamentals
Tire manufacturers are required to place standardized
information on the sidewall of all tires. This information
identifies and describes the fundamental characteristics of
the tire and also provides a tire identification number for
safety standard certification and in case of a recall.
Table 4-4. Tire Wear
Wear Pattern Cause Action
Center Wear Over Inflation
Adjust Pressure to particular load
per tire catalog
Edge Wear Under Inflation
Adjust Pressure to particular load
per tire catalog
Side Wear Loss of camber or overloading
Make sure load doesn’t exceed
axle rating. Check alignment and
align if necessary.
Toe Wear Incorrect toe-in Needs alignment
Cupping Out of balance
Check bearing adjustment and
balance tires
Flat Spots Wheel lockup and tire skidding
Avoid sudden stops when possi-
ble and adjust brakes.