Brake testing on test stand - AP42.00-P-4290BA: Notes

General brake test (Only applies for countries without a specified brake test on the brake test stand)
1	Check braking behavior of service brake when driving	It must be ensured that the brake test when driving is performed as per the country specific legislation and regulations. Otherwise, people may be injured or there may be damage to material and the environment! Press brake pedal uniformly. With braking deceleration fluctuations or pulsating brake pedal: ↓ Determine and rectify cause subject to separate repair order. With a difference in the service brake performance on the wheels on a single axle: ↓ Check/correct tire pressure subject to separate repair order. If the service brake performance difference remains even after repeat brake test on the wheels on a single axle: ↓ Determine and rectify cause subject to separate repair order. The locking limit was not reached: ↓ Subject to a separate repair order, check whether the brake values still comply with the legal regulations. The specified minimum requirements and tolerance limits for the brake system must be fulfilled on a vehicle-specific basis in accordance with the country-specific legislation. If this is not the case: ↓ Repair any complaints subject to separate repair order after performing diagnosis with the appropriate findings.
2	Check braking characteristics for parking brake when driving at 4 km/h (2.5 mph)	It must be ensured that the brake test when driving is performed as per the country specific legislation and regulations. Otherwise, people may be injured or there may be damage to material and the environment! Electrically operated parking brakes are only active at a maximum speed of 4 km/h (2.5 mph). The locking limit was not reached: ↓ Subject to a separate repair order, check whether the brake values still comply with the legal regulations. The specified minimum requirements and tolerance limits for the brake system must be fulfilled on a vehicle-specific basis in accordance with the country-specific legislation. If this is not the case: ↓ Repair any complaints subject to separate repair order after performing diagnosis with the appropriate findings.
Brake test on brake test stand
	Risk of death caused by limbs being caught or crushed by rotating parts when performing tests on the brake test stand	Never leave the vehicle unattended on the rollers except in an emergency. Ensure that no one is under the vehicle or near rotating parts during testing. In case of emergency, use the EMERGENCY OFF switch to shut down test stand.
3	Set service valve or electrical selection switch in engine compartment to "TEST" position	Ignition must be switched off.
4	Move vehicle with front axle into roller brake test stand
5	Move automatic transmission to selector lever position "N" or shift manual transmission to neutral
6	Determine and document the braking characteristic and brake values of the front axle	Press brake pedal uniformly. The maximum value prior to the wheels locking up is to be documented.
7	Move vehicle with rear axle into roller brake test stand
8	Move automatic transmission to selector lever position "N" or shift manual transmission to neutral
9	Determine and document braking response and brake values of rear axle	Press brake pedal uniformly. The maximum value prior to the wheels locking up is to be documented.
10	Determine and document braking response, brake values and actuating travel of parking brake	Vehicles with mechanically actuated parking brake Operate parking brake uniformly. The maximum values prior to the wheels locking up are to be documented.
11	Release parking brake and drive vehicle out of roller brake test stand
12	Evaluate braking response and documented brake values of service brake
	Notes on the evaluating and interpreting brake tests on test stands		AH42.00-P-0004-01A
		With brake value fluctuations or pulsating brake pedal: ↓ Determine and rectify cause subject to separate repair order. If the difference in the braking effect of the service brake at the wheels of an axle is more than 25 % of the highest value: ↓ Check/correct tire pressure subject to separate repair order. ↓ Repeat the brake test on a test stand, subject to a separate repair order. If the difference in the braking effect of the service brake is still outside the tolerance during the repeated brake test: ↓ Determine and rectify cause subject to separate repair order. The locking limit was not reached: ↓ Subject to a separate repair order, check whether the brake values still comply with the legal regulations. The stated deviation applies for the Federal Republic of Germany; differently phrased country-specific regulations must be observed accordingly.
13	Evaluate braking response and documented brake values of parking brake	Vehicles with mechanically actuated parking brake With brake value fluctuations or pulsating actuation: ↓ Determine and rectify cause, subject to separate repair order. If the difference in the braking effect of the parking brake at the wheels of an axle is more than 50 % of the highest value: ↓ Bed in the parking brake as per the specifications, subject to a separate repair order.	AP42.20-P-4290-01BA *BE42.20-P-1001-02A
14	Set service valve or electrical selection switch in engine compartment to "Function" position	Ignition must be switched off.

ADJUSTMENT VALUES FOR PARKING BRAKE DURING MAINTENANCE OPERATIONS

Number	Designation	Model 230
BE42.20-P-1001-02A	Number of notches by which the foot-operated parking brake has to be adjusted, if until then there is no adequate braking effect	7