Fundamental Procedures; Dynamometer - Mazda Mazda6 Workshop Manual Supplement

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4WD testing/servicing

• Brake tester

• To ensure the stability of the drag force of the viscous coupling always perform a brake test after

using the dynamometer or speed meter tester.

• If there is a great amount of brake drag, it is probably due to the viscosity of the viscous coupling or the

center differential (RBC). To remove the influence of the coupling, jack up all four wheels of the vehicle

and verify that each wheel can be rotated freely by hand.

• Chassis dynamometer/speed meter tester

• The vehicle may sway or surge forward when on the dynamometer. To prevent possible vehicle

movement, firmly secure it in place using steel retainers (chain, wire or similar) attached to the

front and rear towing hooks or to the tie down hooks.

• Do not pop the clutch.

• Do not accelerate suddenly.

• The dynamometer/speed meter tester has two setting modes: propeller shaft removed mode and free

roller mode. After placing the vehicle on the tester and setting the wheels on the free rollers, start the

engine. For MTX vehicles, set the shift lever into second gear and gently, at low idle speed, release the

clutch pedal. For ATX vehicles, set the selector lever to D range, and slowly accelerate.

FUNDAMENTAL PROCEDURES

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