chevrolet Workshop Repair Guides

Chevrolet Workshop Service and Repair Manuals

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Drive/Propeller Shaft: Technical Service Bulletins
Tires/Propshaft - Speed Reference Chart (Vibration)

Number:

88-45

Section:

0A

Date:

Sept., 1987

Subject:

TIRE AND PROPSHAFT SPEED REFERENCE CHART

Model and Year: ALL LIGHT DUTY TRUCKS
TO:

ALL CHEVROLET DEALERS

Reed Tachometer usage requires calculating the speed of rotating components on a vehicle and relating it to the frequency of a vibration (reference
Chevrolet Dealer service Bulletin 87-139 for Reed Tachometer usage instructions). The chart below was developed to simplify calculating driveline,
wheel and tire RPM.

The procedure for using this chart is as follows:

-

Determine the vehicle tire size and rear axle ratio.

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