Buick Encore: Vibration Diagnosis and Correction
Buick Encore 2012-2019 Service Manual / General Information & Maintenance / Vibration Diagnosis and Correction
- Diagnostic information and procedures
- Vibration analysis - road testing (EL-38792-A ELECTRONIC VIBRATION ANALYZER)
- Vibration analysis - hub and/or axle input
- Vibration analysis - engine/accessory isolation
- Vibration diagnostic aids
- Brake rotor/drum balance inspection
- Repair instructions
- Description and operation
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Diagnostic information and procedures
SPECIFICATIONS
TIRE AND WHEEL RUNOUT SPECIFICATIONS
Tire and Wheel Runout Specifications
DIAGNOSTIC INFORMATION AND PROCEDURES
VIBRATION DIAGNOSIS, STARTING POINT, AND CORRECTION
The information con
Vibration analysis - road testing (EL-38792-A ELECTRONIC VIBRATION ANALYZER)
Test Description
The numbers below refer to the step numbers on the diagnostic table.
5
Obtaining rotational speed for the components rotating at tire/wheel speed is
critical to systematically
elimin
Vibration analysis - hub and/or axle input
Test Description
The numbers below refer to the step numbers on the diagnostic table:
2
This test will determine the effect of turning input on the vibration.
6
This test will determine the effect of
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Description and operation
Definitions and abbreviations
Throttle Positions
Engine Braking
A condition where the engine is used to slow the vehicle by manually
downshifting during a zero throttle
coastdown.
Full Throttle Downshift
A quick apply of the accelerator pedal to its full travel, forcing a
downshift.
Heavy Throttle
Repair instructions - on vehicle
Manual shift detent lever with shaft position witch assembly replacement
Special Tools
DT-41229 Manual Shaft Pin Installer
For equivalent regional tools, refer to Special Tools .
Removal Procedure
Remove the engine coolant fan shroud. Refer to Engine Coolant Fan Shroud
Replacement (2H0) ,
Engin
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