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5-2 TIRES - WHEELS - SUSPENSION
Most tire, wheel, and suspension related problems are due to excessive loads, extreme conditions, and
improper maintenance. Tire, wheel, and suspension problems can be easily detected and solved by check-
ing the following guide. For maintenance procedures, see
Sections 4-6, 4-9, 4-10, and 4-11.
SYMPTOM
PROBLEM: REMEDY
VIBRATIONS WHILE DRIVING
Improper tire inflation:
inflate to proper pressure.
Tires cupped or have flat spots:
replace tires.
Wheels bent or loose:
replace or tighten.
Tires incorrectly mounted:
remount.
Mud in wheels:
clean wheels.
Tire(s) out of balance:
balance tires.
Brakes dragging:
locate cause and repair.
Object(s) stuck between duals:
remove object(s).
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.
Overloading:
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.
Check ABS system function.
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.
Overloading:
check rim load rating.
*IN ALL INSTANCES OF RIM FAILURE, REPLACE THE RIM IMMEDIATELY!
5-2
Содержание 330B
Страница 3: ...MODEL 330B SEMITRAILER OPERATOR S MANUAL PURCHASED FROM DATE ADDRESS PHONE NO SERIAL NO i ...
Страница 8: ......
Страница 12: ......
Страница 20: ...3 8 Figure 3 3 Steps for Loading and Unloading ...
Страница 26: ...3 14 Figure 3 7 Rear Impact Guard System ...
Страница 34: ...4 6 Figure 4 2 330B Wiring Diagram ...
Страница 35: ...4 7 Figure 4 3 Remote Wiring Diagram ...
Страница 40: ...4 12 Figure 4 6 Examples of Camber Figure 4 7 Checking Axle for Bend ...
Страница 44: ...4 16 Figure 4 11 Axle and Brake Assembly ...
Страница 54: ......
Страница 63: ...NOTES 5 9 ...
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