Speedometer Head: Testing and Inspection

INSPECT SPEEDOMETER ON-VEHICLE
Using a speedometer tester, inspect the speedometer for allowable indication error and check the operation of the odometer.

HINT: Tire wear and tire over or under inflation will increase the indication error.

If error is excessive, replace the combination meter.







INSPECT SPEEDOMETER RESISTANCE
Measure the resistance between terminals with an ohmmeter at the positions shown in the illustration.
If resistance value is not as specified, replace the combination meter.