Brake Test - AP42.00-P-4290BA
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MODEL 117, 124, 129, 140, 156, 163, 164, 166, 168, 169, 170, 171, 172, 176, 177, 190, 197, 199, 202, 203, 204, 205, 207, 208, 209, 210, 211, 212, 213, 215, 216, 217, 218, 219, 220, 221, 222, 230, 231, 238, 240, 242, 245 (except 245.286), 246, 251, 253, 257, 290, 292
MODEL 463 as of model year 2019
| General brake test (Only applies for countries without a specified brake test on the roller 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! 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. ↓determine cause and correct. If the locking limit is not reached. ↓ 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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| 2 | Check braking characteristics of parking brake when driving at ≤ 4 km/h (≤ 2.5 mph). | Otherwise, people may be injured or there may be damage to material and the environment! If the locking limit is not reached. ↓ 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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| Brake test on roller 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 | |
| 3.1 | Set hydraulic valve or electrical selection switch in engine compartment to "TEST" position. | Model 124.226/230/290/330/333/393 |
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| 3.2 |
Switch on dynamometer test using steering wheel buttons. | Model 197 Model 197.3/4 Do not switch off ESP® using the ESP® Sport OFF button on the center console. Otherwise, an active intervention by the ESP® brake system may lead to measurement errors. |
AR54.30-P-1000-02QQ |
| 4 | Attach pedal force meter to brake pedal. | Model 164, 166, 169, 171, 172, 190, 203.7, 204, 205, 207, 212, 213, 216, 217, 218, 219, 221, 222, 230, 231, 238, 245 (except 245.286), 246, 251, 253, 292 Model 463 as of model year 2019 For brake test on roller brake test stand as per EU Directive 2010/48/EU for vehicles with initial registration as of 28.07.2010. |
WS42.00-P-0006B |
| Model 164, 166, 169, 171, 172, 190, 203.7, 204, 205, 207, 212, 213, 216, 217, 218, 219, 221, 222, 230, 231, 238, 245 (except 245.286), 246, 251, 253, 292 |
AR42.00-P-0001-01A | ||
| 5 | Perform gear ratio change from "High" to "Low". | Model 164, 166 with code 430 (Offroad package) Model 463 as of model year 2019 with code ZB4 (Off-Road package) If "Sport" transmission mode has been activated, it is not possible to shift to the "Low" step-down ratio. |
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| 6 |
Move vehicle with front axle onto roller brake test stand. | WS42.00-P-0006B | |
| 7 | Move automatic transmission to selector lever position "N" or shift manual transmission to neutral. | ||
| 8 | Determine and document the braking characteristics and brake values of the front axle. | On all-wheel drive vehicles, the speed of the roller brake test stand rollers may be max. 5 km/h and may not last for longer than 15 s per test of one axle. 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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| 9 |
Move rear axle of vehicle into roller brake test stand. | WS42.00-P-0006B | |
| 10 | Move automatic transmission to selector lever position "N" or shift manual transmission to neutral. | ||
| 11 | Determine and document braking characteristics and brake values of rear axle. | On all-wheel drive vehicles, the speed of the roller brake test stand rollers may be max. 5 km/h and may not last for longer than 15 s per test of one axle. 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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| 12.1 | Determine and document braking response, brake values and actuating travel of parking brake. | Vehicles with mechanically actuated parking brake. |
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| 12.2 | Determine and document braking characteristics and brake values for electric parking brake. | Model 197, 216, 221 Vehicles with electrically-operated parking brake. On all-wheel drive vehicles, the speed of the roller brake test stand rollers may be max. 5 km/h and may not last for longer than 15 s per test of one axle. 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. Before operating the electric parking brake, the rear-axle complete wheels must be driven by the roller brake test stand until the vehicle has detected the roller brake test stand so that application of the brake pads is then slowed down. Otherwise damage may occur. Briefly press switch of electric parking brake once, do not press and hold. Otherwise damage will occur. |
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| 12.3 | Determine and document braking characteristics and brake values for electric parking brake. | Model 117, 156, 166, 172, 176, 177, 190, 205, 213, 217, 222, 231, 238, 242, 246, 253, 257, 290, 292 Model 463 as of model year 2019 Vehicles with electrically-operated parking brake. On all-wheel drive vehicles, the speed of the roller brake test stand rollers my be max. 5 km/h and may not last for longer than 15 s per test of one axle. 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. Before operating the electric parking brake, the rear-axle complete wheels must be driven by the roller brake test stand until the vehicle has detected the roller brake test stand so that application of the brake pads is then slowed down. Otherwise damage may occur. After 3 s press the switch of the electric parking brake again briefly, the electric parking brake brakes with greater brake power. If necessary, after 3 s briefly press the switch of the electric parking brake a 3rd and a 4th time until the wheels lock up. |
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| 13 | Release parking brake and drive vehicle out of roller brake test stand. | ||
| 14 | Evaluate braking characteristics and documented brake values of service brake. Notes on the evaluating and interpreting brake tests on test stands | If there are brake value fluctuations or a pulsating brake pedal or if the difference in the braking effect of the service brake at the wheels of one axle is more than 25 % of the highest value, ↓ determine cause and correct. ↓ Check whether the brake values still comply with the legal regulations. ↓ determine cause and correct. |
AH42.00-P-0004-01A |
| 15.1 | Evaluate braking characteristics and documented brake values of parking brake. | Vehicles with mechanically actuated parking brake. 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. ↓ Bed in the parking brake as per the specification. |
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| Model 124, 129, 140, 163, 164, 168, 169, 170, 171, 202, 203, 204, 207, 208, 209, 210, 211, 212, 215, 218, 219, 220, 230, 240, 245 (except 245.286), 251 |
AP42.20-P-4290-01BA *BE42.20-P-1005-01A |
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| Model 124, 140, 163, 164, 202, 203, 204, 207, 208, 209, 210, 211, 212, 215, 218, 219, 220, 230, 240, 251 Number of notches by which the foot-operated parking brake has to be adjusted, if until then there is no adequate braking effect | *BE42.20-P-1001-02A | ||
| Model 168, 169, 170, 171, 245 (except 245.286) Number of notches by which the hand brake has to be adjusted, if until then there is no adequate braking effect ↓ Repeat brake test on roller brake test stand. ↓ determine cause and correct. LE After obtaining special order. If the locking limit is not reached. ↓ Check whether the brake values still comply with the legal regulations. If the brake values do not meet legal requirements ↓ determine cause and correct. |
*BE42.20-P-1002-02A | ||
| 15.2 | Evaluate braking characteristics and documented brake values of parking brake. | Model 197, 216, 221 Vehicles with electrically-operated parking brake. 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. ↓ Condition parking brake as per the specifications. |
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| Model 216 Model 221.0/1 |
AR42.20-P-0530-02SX | ||
| Model 197 ↓ determine cause and correct. ↓ Check whether the brake values still comply with the legal regulations. ↓ determine cause and correct. |
AR42.20-P-0530-02RQ | ||
| 15.3 | Evaluate braking characteristics and documented brake values of parking brake. | Model 117, 156, 166, 172, 176, 177, 190, 205, 213, 217, 222, 231, 238, 242, 246, 253, 257, 290, 292 Model 463 as of model year 2019 Vehicles with electrically-operated parking brake. 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. dA determine cause and correct. ↓ Check whether the brake values still comply with the legal regulations. Federal Republic of Germany; differently phrased country-specific regulations must be observed accordingly. If the brake values do not meet legal requirements, ↓ determine cause and correct. |
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| 16.1 | Set hydraulic valve or electrical selection switch in engine compartment to "Function" position. | Model 124.226/230/290/330/333/393 |
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| 16.2 |
Switch off dynamometer test using steering wheel buttons. | Model 197 Model 197.3/4 |
AR54.30-P-1000-02QQ |
ADJUSTMENT VALUES FOR PARKING BRAKE DURING MAINTENANCE OPERATIONS
| Number | Designation | Model 124, 140, 163, 164, 202, 203, 204, 207, 208, 209, 210, 211, 212, 215, 218, 219, 220, 230, 240, 251 | |
|---|---|---|---|
| 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 | Number | 7 |
ADJUSTMENT VALUES FOR PARKING BRAKE DURING MAINTENANCE OPERATIONS
| Number | Designation | Model 168, 169, 170, 171, 199, 245 | |
|---|---|---|---|
| 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 | Number | 5 |
TEST VALUES FOR PARKING BRAKE
| Number | Designation | Model 129 up to 9/30/89 with duo servo brake | Model 129 as of 10/1/89 with duo servo brake | |
|---|---|---|---|---|
| BE42.20-P-1005-01A | Number of notches at which the parking brake must be adjusted if up to that point there is insufficient braking effect | Number | 4 | 5 |