Contents: Four Post Car Lifts ⇩ Two Post Car Lifts ⇩ Four-wheel roller stand test ⇩ Test on a roller stand with support…⇩
Four Post Car Lifts
Position the vehicle on the lift so that the front and rear of the vehicle are equidistant from the edges of the lift. Place wheel chocks under the wheels, select neutral on the transmission and, if possible, apply the parking brake.
If freedom of wheel rotation is required, use a suitable lift that supports the vehicle under the axle housings.
Two Post Car Lifts

WARNING: Once raised to the desired height, make sure the vehicle is stable before starting work.
CAUTION: If it is necessary to disconnect the axle shafts, release the parking brake and select neutral on the transmission so that the axle shaft(s) can rotate after the vehicle is raised to the desired height.
- Position the vehicle so that the center of the lift posts is aligned with the front of the driver/passenger seat cushions.
- Extend the lift arms and position the pads of each lift arm under the lift points on the body side members marked with arrows in the illustration.
- Raise the vehicle enough to lift the wheels and ensure that the pads of each lift arm are still properly positioned and in full contact with the body rails.
- Raise the vehicle to the desired height.
- Make sure the vehicle is properly supported on all four lift pads, the pads are still positioned correctly and have good contact with the body rails.
Four-wheel roller stand test
WARNING: DO NOT attempt to rotate individual wheels while the vehicle is supported on jacks or stands.
The original article is located on lrman.ru
If the front and rear rollers rotate at the same speed and the normal safety requirements of the service station are met, there are no speed restrictions for testing, except for those related to the tires.
Test on a roller stand with support on two wheels
IMPORTANT: If possible, use a four-wheel roller stand to test the brakes.
If a two-wheel roller brake test is required, it should be performed with the driveshaft to the fixed axle removed and the main transmission and transfer case in neutral. Allow the engine to idle while testing the brakes to maintain vacuum in the brake booster.
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