Hatchback 4WD F4-1781cc 1.8L (1983)
Tires: All Technical Service Bulletins
Tire and Wheel - Vibration Diagnosis & Repair
NUMBER: 5-13-83
DATE: 02-11-83
APPLICABILITY:
ALL VEHICLES
SUBJECT:
TIRE AND WHEEL BALANCING
This bulletin has been prepared to assist in the diagnosis and repair of tire and wheel vibrations. It is for informational purposes only. Please read the
entire bulletin prior to diagnosing a complaint vehicle.
ROAD TEST
Test drive the vehicle to verify that a tire and/or wheel vibration exists. Note the vehicle speed at which the vibration occurs.
TIRE AND WHEEL IMBALANCE
Tire and wheel imbalance causes a constant, low frequency vibration at speeds over 30 miles per hour.
To properly balance the tire and wheel, it is recommended to use an on-the-car dynamic spin balancer. Static or bubble balancers should not be used.
Stud mounting adapters, rather than center hole mounting, are recommended on balance equipment to achieve the most accurate balance.
Before proceeding with the balancing operation, check the following:
Tire air pressure
Lug nut torque
Bearing preload
Tire tread or sidewall for damage
Debris in tire tread
Wheel damage
Any non-factory type equipment
Follow the equipment manufacturer instructions when balancing tires and wheels. It is also important that the equipment is in good working condition.
Wheel balancing equipment should be periodically checked and recalibrated if necessary.
WHEEL RUNOUT
Though not as common as imbalance, excessive wheel runout can be a cause of vibration problems.
