SYMPTOM
PROBLEM: REMEDY
RAPID TIRE WEAR/DETERIORATION:
CENTER TREAD WEAR
Over inflation:
Deflate to correct inflation.
SHOULDER TREAD WEAR - BOTH SHOULDERS
Under inflation: Increase inflation to correct psi.
Check axle alignment.
Overload:
Loads are above rated tire capacity.
Do
not load above rated tire capacity
.
SHOULDER TREAD WEAR - ONE SHOULDER
Axle damage: Straighten or replace axle.
Axles not parallel:
Check axle alignment.
OVERALL TREAD WEAR
Overloading:
Check tire load rating.
High speeds:
Adjust speed according to road and
load conditions.
Incorrect dual matching:
Properly match dual tires
TIRE FLAT SPOTS
Quick stops:
Adjust braking practices.
Grabbing brakes:
Adjust brakes properly.
Worn or loose wheel bearings:
Adjust or replace as
needed.
Out of balance wheels and tire:
Balance wheels
and tires.
UNEVEN WEAR
Suspension bushings worn:
Replace bushings.
Worn or loose wheel bearings:
Adjust or replace as
needed.
Out of balance wheels and tires:
Balance wheels
and tires.
RIM FAILURE*:
CRACKING
Overinflated tires:
Deflate tire to proper psi.
High speeds:
Adjust speed according to road and
load conditions.
High speed cornering:
Adjust cornering practices.
Over loading:
Check rim load rating.
*In all instances of rim failure, replace the rim immediately!
BENDING OR WARPING
Curb-hopping or potholes:
Adjust turning practices
and adjust speed accordingly with road conditions.
Improper tightening sequence:
Follow proper tight-
ening sequence.
BROKEN STUDS*
Over-tightening:
Use correct torque and tightening
sequence when mounting.
*Replace broken studs before using the semitrailer!,
TRAILER TRACKING PROBLEMS:
TRACKS TO ONE SIDE
Axle alignment:
Re-align axle.
TRACKS TO EITHER SIDE
Broken or bent springs or equalizer bushings:
Re-
place worn parts.
Axles not parallel:
Adjust axle spacing to be parallel.
5-3 BRAKES (FOR TRAILERS WITH AIR BRAKES)
For maintenance procedures, see
Section 4-6.
5-2
Содержание L20 Series
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Страница 15: ...3 3 Figure 3 3 Electrical Assembly For Trailer w Electric Brakes...
Страница 16: ...3 4 Figure 3 4 Electrical Assembly For Trailer w Air Brakes...
Страница 26: ...4 6 Figure 4 3 Axle and Brake Assembly...
Страница 35: ...4 15 Figure 4 12 Mounting Tires and Wheels Figure 4 13 Stud Tightening Sequence...
Страница 39: ...NOTES 4 19...
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