Brake Test - AP42.00-P-4290G
Model 460, 461
Model 463
up to model year 2019
| Prepare brake test | |||
| 1 | Switch off the differential lock. | ||
| 2 | Switch off all-wheel drive. | Vehicle with manually selectable four wheel drive. | |
| General brake test (Only applies for countries without a specified brake test on the brake test stand) | |||
| 3 | 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. In event of braking deceleration fluctuations or a pulsating brake pedal, ↓ determine cause and correct. In event of any difference in service brake performance on wheels on a single axle, ↓ check and correct tire pressure. If the service brake performance difference remains even after repeat brake test on the wheels on a single axle, ↓ determine cause and correct. ↓ check whether the brake values still comply with the legal regulations. If the specified minimum requirements and tolerance limits for the brake system are not fulfilled in accordance with the country-specific legislation, ↓ determine cause and correct. |
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| 4 | Check braking behavior and actuating travel 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. |
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| Number of notches by which the hand brake has to be adjusted, if until then there is no adequate braking effect If an insufficient braking effect, brake deceleration fluctuations or a pulsating operation occurs, ↓ determine cause and correct. If locking limit is not reached, ↓ check whether the brake values still comply with the legal regulations. |
*BE42.20-P-1002-02A | ||
If the specified minimum requirements and tolerance limits for the brake system are not fulfilled in accordance with the country-specific legislation, ↓ determine cause and correct. |
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| 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. | AS42.00-Z-0001-01A | |
| 5 | Move vehicle with front axle onto roller brake test stand. | ||
| 000 588 05 21 00 Roller brake test stand | WS42.00-P-0006B | ||
| 6 | Move automatic transmission to selector lever position "N" or shift manual transmission to neutral. | With transmission 722, 725.0 | |
| 7 | Determine and document the front axle braking characteristics and brake values. | The speed of the roller brake test stand rollers be a max. of 5 km/h and may not last longer than 10 s for each axle test. Between the tests, a waiting period of at least 15 s must be observed, during which the axle may not be driven by the roller brake test stand rollers. The drive train and brake system can otherwise be damaged. |
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| 8 | Move rear axle of vehicle into roller brake test stand. | ||
| 000 588 05 21 00 Roller brake test stand | WS42.00-P-0006B | ||
| 9 | Move automatic transmission to selector lever position "N" or shift manual transmission to neutral. | With transmission 722, 725.0 | |
| 10 | Determine and document the rear axle braking characteristics and brake values. | The speed of the roller brake test stand rollers be a max. of 5 km/h and may not last longer than 10 s for each axle test. Between the tests, a waiting period of at least 15 s must be observed, during which the axle may not be driven by the roller brake test stand rollers. The drive train and brake system can otherwise be damaged. |
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| 11 | Determine and document braking response, brake values and actuating travel of parking brake. | ||
| 12 | Release parking brake and drive vehicle out of roller brake test stand. | ||
| 13 | Evaluate braking characteristics and documented brake values of service brake. | ||
| Notes on the evaluating and interpreting brake tests on test stands | AH42.00-N-0004-01S | ||
| If there are brake value fluctuations or a pulsating brake pedal or if the difference in the braking effect of the wheels on an axle is more than 25 % of the highest value, ↓ determine cause and correct. If locking limit is not reached, ↓ check whether the brake values still comply with the legal regulations. |
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| 14 | Evaluate braking characteristics and documented brake values of parking brake. | ||
| Notes on the evaluating and interpreting brake tests on test stands | AH42.00-N-0004-01S | ||
| Number of notches by which the hand brake has to be adjusted, if until then there is no adequate braking effect If there are brake value fluctuations, pulsating operation or if the difference in the braking effect of the parking brake at the wheels of one axle is more than 50 % of the highest value, ↓ determine cause and correct. ↓ check whether the brake values still comply with the legal regulations. |
*BE42.20-P-1002-02A |
ADJUSTMENT VALUES FOR PARKING BRAKE DURING MAINTENANCE OPERATIONS
| Number | Designation | Model 460, 461 Model 463 up to model year 2019 |
|---|---|---|
| BE42.20-P-1002-02A | Number of notches by which the hand brake has to be adjusted, if until number then there is no adequate braking effect | 4 |