Brake testing on test stand - AP42.00-P-4290G

MODEL 460

MODEL 461

MODEL 463

MODIFICATION NOTES

28.9.10

Work procedure/work method changed

	Checking
	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 STOP switch to shut down test stand.	AS42.00-Z-0001-01A
1	Check/correct tire pressure and
2	Move vehicle with front axle into roller brake test stand	Differential lock, switch off all-wheel drive. In the roller dynamometer switch off the engine, move ignition key to position "1" and shift transmission to position "N" or "neutral". The braking effect is only boosted for 1 to 2 brake applications.
3	Determine brake values, control force and actuating travel on brake pedal for front axle and document	Press brake pedal uniformly. The maximum value prior to the wheels locking up is to be documented. The control force and actuating travel on the brake pedal are to be documented at maximum value. In the event of brake-fluid fluctuations or a pulsating brake pedal, determine the reason and rectify subject to separate repair order.
4	Move vehicle with rear axle into roller brake test stand	Differential lock, switch off all-wheel drive. In the roller dynamometer switch off the engine, move ignition key to position "1" and shift transmission to position "N" or "neutral". The braking effect is only boosted for 1 to 2 brake applications.
5	Determine brake values, control force and actuating travel on brake pedal for rear axle and document	Press brake pedal uniformly. The maximum value prior to the wheels locking up is to be documented. The control force and actuating travel on the brake pedal are to be documented at maximum value. In the event of brake-fluid fluctuations or a pulsating brake pedal, determine the reason and rectify subject to separate repair order.
6	Determine brake values, control force and actuating travel on parking brake for rear axle and document	Only on vehicles with mechanical parking brake. Operate parking brake uniformly. The maximum value prior to the wheels locking up is to be documented. The control force and actuating travel on the parking brake are to be documented at maximum value. In the event of brake-fluid fluctuations or a pulsating parking brake, determine the reason and rectify subject to separate repair order.
6		Hand brake	*BE42.20-P-1002-02A
7	Drive the vehicle off the roller brake test stand.
8	Evaluate documented brake values	If the specified minimum requirements and tolerance limits for the brake system scopes to be tested are not complied with, this must be rejected and rectified subject to separate repair order, after a conducted diagnosis and the corresponding findings.
	Notes on assessment and evaluation of brake tests on test stands		AH42.00-P-0004-01A

ADJUSTMENT VALUES FOR PARKING BRAKE DURING MAINTENANCE OPERATIONS

Number	Designation		Model 460, 461, 463
BE42.20-P-1002-02A	Number of notches by which the hand brake has to be adjusted, if until then there is no adequate braking effect	Quantity	4