6.1K views · 44 reactions | Learn how to properly perform speedometer tests and brake tests on rollers for accurate results. Find out why these tests cannot be done if the front and rear wheels are linked, and discover a step-by-step process for disengaging 4WD on a vehicle equipped with viscous coupling type IVWD with ABS. #SpeedometerTests #BrakeTests #RollerTests #4WDDisengagement #ViscousCoupling #ABS #VehicleMaintenance #AutomotiveTips #TestProcedures #4WD | Mechanic Jerome | Facebook

Learn the step-by-step process to inspect the brake booster for air tightness and proper operation. From checking the pedal reserve distance to testing the vacuum produced by the engine, this video will guide you through the essential steps. Stay safe on the road with a well-functioning brake system! #BrakeBoosterInspection #AirTightnessCheck #ProperOperation #PedalReserveDistance #EngineVacuum #BrakeSystemSafety #VehicleMaintenance #AutoRepairTips #RoadSafety #BrakeBoosterTesting | Mechanic Jer