Using roller stands for road testing (Freelander 1)

General information

CAUTION: If possible, use a roller stand to check the braking forces of all four wheels simultaneously.

The front and rear wheels cannot have independent drive, thanks to the clutch of increased friction. The presence of this clutch eliminates the need for a mechanism for locking the center differential, since when the front wheels slip, most of the torque goes to the rear wheels.

DO NOT attempt to drive one axle while the vehicle is raised on a jack or lift.

Stand for simultaneous testing of braking forces of all four wheels

Ensure that the front and rear pairs of rollers rotate at the same speed, and ensure that the established safety regulations are observed. There are no restrictions on the wheel speed during the test, except for the limitation imposed by the maximum permissible tire speed.

Before testing on a roller stand under all wheels of a car with an ABS system, it is necessary to disable the ABS modulator. The ABS system will not function, and the ABS indicator will light up. Normal braking will then be possible.

Stand for simultaneous testing of braking forces of wheels of one axle

[The original article is located on the website: LRMAN.ru]
The ABS system will not work on a single axle roller tester. The ABS indicator will illuminate during the test. Normal braking will be possible.

If the braking forces are determined on a stand for simultaneous testing of the braking forces of the wheels of one axle, the following precautions must be taken:

• the propeller shaft to the rear wheels has been removed or disconnected;
• the automatic transmission is set to "neutral";
• the forced deceleration mode on the descent is not activated.

During the brake force test, the engine must be idling to provide the vacuum required for the brake booster to operate.