Danger ! | 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. | |
Danger ! | Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running. | Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. | |
| Check | ||
1 | Connect pressure gauge to compressed air connections of master brake cylinder for 1st and 2nd axle | Test kit | |
2 | Start engine and completely fill compressed air system at idle speed | ||
3 | Switch roller brake test stand on | ||
4 | Drive the vehicle on the roller brake test stand | Run engine. | |
5 | Using the brake pedal, apply the specified test pressures to the brake cylinder and compare brake forces achieved for each axle against the reference values. | Minimum brake force on 1st axle at test pressure | |
Minimum force on 2nd axle at test pressure | |||
If the brake forces are not achieved: | |||
| |||
Determine causes and repair brake system. | |||
6 | Drive the vehicle off the roller brake test stand. | ||
7 | Apply parking brake | ||
8 | Turn off engine | ||
9 | Switch roller brake test stand off | ||
10 | Remove all pressure gauges |
Reference values for brake force |
Number | Designation | MODEL 668.3 with zGM < = 5000 kg | MODEL 668.3 with 5000 kg < zGM < = 5600 kg | ||
BE42.10-N-1001-17I | Minimum brake force on 1st axle at test pressure | 0.4 bar | kN | 0,0 | 0,0 |
1.0 bar | kN | 1,4 | 1,4 | ||
1.5 bar | kN | 2,5 | 2,5 | ||
2.0 bar | kN | 3,6 | 3,6 | ||
2.5 bar | kN | 4,6 | 4,7 | ||
3.0 bar | kN | 5,7 | 5,8 | ||
3.5 bar | kN | 6,7 | 6,9 | ||
4.0 bar | kN | 7,7 | 7,9 | ||
4.5 bar | kN | 8,8 | 9,0 | ||
5.0 bar | kN | 9,8 | 10,0 | ||
5.5 bar | kN | 10,8 | 11,0 | ||
6.0 bar | kN | 11,8 | 12,1 | ||
6.5 bar | kN | 12,9 | 13,2 | ||
6.8 bar | kN | 13,5 | 13,8 | ||
7.0 bar | kN | - | - | ||
7.5 bar | kN | - | - |
Reference values for brake force |
Number | Designation | MODEL 668.3 with 5600 kg < zGM < = 5990 kg | MODEL 668.3 with 5900 kg < zGM < = 6400 kg | ||
BE42.10-N-1001-17I | Minimum brake force on 1st axle at test pressure | 0.4 bar | kN | 0,0 | 0,0 |
1.0 bar | kN | 1,5 | 1,5 | ||
1.5 bar | kN | 2,7 | 2,7 | ||
2.0 bar | kN | 3,9 | 3,9 | ||
2.5 bar | kN | 5,0 | 5,1 | ||
3.0 bar | kN | 6,2 | 6,2 | ||
3.5 bar | kN | 7,3 | 7,3 | ||
4.0 bar | kN | 8,4 | 8,5 | ||
4.5 bar | kN | 9,5 | 9,6 | ||
5.0 bar | kN | 10,6 | 10,7 | ||
5.5 bar | kN | 11,8 | 11,8 | ||
6.0 bar | kN | 12,9 | 12,9 | ||
6.5 bar | kN | 14,0 | 14,0 | ||
6.8 bar | kN | 14,7 | - | ||
7.0 bar | kN | - | 15,2 | ||
7.5 bar | kN | - | 16,3 |
Reference values for brake force |
Number | Designation | MODEL 670.3 with zGM>=6600 kg | MODEL 670.3/4 with 7490 kg < zGM <= 8200 kg | ||
BE42.10-N-1001-17I | Minimum brake force on 1st axle at test pressure | 0.4 bar | kN | 0,0 | 0,0 |
1.0 bar | kN | 1,8 | 2,0 | ||
1.5 bar | kN | 3,3 | 3,7 | ||
2.0 bar | kN | 4,7 | 5,3 | ||
2.5 bar | kN | 6,1 | 6,9 | ||
3.0 bar | kN | 7,5 | 8,5 | ||
3.5 bar | kN | 8,9 | 10,0 | ||
4.0 bar | kN | 10,3 | 11,6 | ||
4.5 bar | kN | 11,6 | 13,1 | ||
5.0 bar | kN | 13,0 | 14,6 | ||
5.5 bar | kN | 14,3 | 16,2 | ||
6.0 bar | kN | 15,7 | 17,7 | ||
6.5 bar | kN | 17,1 | 19,3 | ||
6.8 bar | kN | 17,9 | 20,2 | ||
7.0 bar | kN | - | - | ||
7.5 bar | kN | - | - |
Reference values for brake force |
Number | Designation | MODEL 670.3/4 with zGM <= 7490 kg and vehicles with traction head zGM = 7490 kg | ||
BE42.10-N-1001-17I | Minimum brake force on 1st axle at test pressure | 0.4 bar | kN | 0,0 |
1.0 bar | kN | 1,9 | ||
1.5 bar | kN | 3,4 | ||
2.0 bar | kN | 4,9 | ||
2.5 bar | kN | 6,3 | ||
3.0 bar | kN | 7,7 | ||
3.5 bar | kN | 9,1 | ||
4.0 bar | kN | 10,5 | ||
4.5 bar | kN | 11,9 | ||
5.0 bar | kN | 13,3 | ||
5.5 bar | kN | 14,7 | ||
6.0 bar | kN | 16,1 | ||
6.5 bar | kN | 17,5 | ||
6.8 bar | kN | 18,4 | ||
7.0 bar | kN | - | ||
7.5 bar | kN | - |
Reference values for brake force |
Number | Designation | MODEL 668.3 with zGM < = 5000 kg | MODEL 668.3 with 5000 kg < zGM < = 5600 kg | ||
BE42.10-N-1002-17I | Minimum force on 2nd axle at test pressure | 0.4 bar | kN | 0,0 | 0,0 |
1.0 bar | kN | 1,1 | 1,4 | ||
1.5 bar | kN | 2,0 | 2,5 | ||
2.0 bar | kN | 2,9 | 3,6 | ||
2.5 bar | kN | 3,8 | 4,7 | ||
3.0 bar | kN | 4,7 | 5,8 | ||
3.5 bar | kN | 5,5 | 6,9 | ||
4.0 bar | kN | 6,4 | 7,9 | ||
4.5 bar | kN | 7,2 | 9,0 | ||
5.0 bar | kN | 8,0 | 10,0 | ||
5.5 bar | kN | 8,9 | 11,0 | ||
6.0 bar | kN | 9,7 | 12,1 | ||
6.5 bar | kN | 10,6 | 13,2 | ||
6.8 bar | kN | 11,1 | 13,8 | ||
7.0 bar | kN | - | - | ||
7.5 bar | kN | - | - |
Reference values for brake force |
Number | Designation | MODEL 668.3 with 5600 kg < zGM < = 5990 kg | MODEL 668.3 with 5900 kg < zGM < = 6400 kg | ||
BE42.10-N-1002-17I | Minimum force on 2nd axle at test pressure | 0.4 bar | kN | 0,0 | 0,0 |
1.0 bar | kN | 1,5 | 1,4 | ||
1.5 bar | kN | 2,7 | 2,5 | ||
2.0 bar | kN | 3,9 | 3,6 | ||
2.5 bar | kN | 5,0 | 4,7 | ||
3.0 bar | kN | 6,2 | 5,8 | ||
3.5 bar | kN | 7,3 | 6,8 | ||
4.0 bar | kN | 8,4 | 7,8 | ||
4.5 bar | kN | 9,5 | 8,9 | ||
5.0 bar | kN | 10,6 | 9,9 | ||
5.5 bar | kN | 11,8 | 10,9 | ||
6.0 bar | kN | 12,9 | 12,9 | ||
6.5 bar | kN | 14,0 | 13,0 | ||
6.8 bar | kN | 14,7 | - | ||
7.0 bar | kN | - | 14,0 | ||
7.5 bar | kN | - | 15,1 |
Reference values for brake force |
Number | Designation | MODEL 670.3 with zGM>=6600 kg | MODEL 670.3/4 with 7490 kg < zGM <= 8200 kg | ||
BE42.10-N-1002-17I | Minimum force on 2nd axle at test pressure | 0.4 bar | kN | 0,0 | 0,0 |
1.0 bar | kN | 1,5 | 2,0 | ||
1.5 bar | kN | 2,7 | 3,7 | ||
2.0 bar | kN | 3,8 | 5,3 | ||
2.5 bar | kN | 5,0 | 6,9 | ||
3.0 bar | kN | 6,1 | 8,5 | ||
3.5 bar | kN | 7,2 | 10,0 | ||
4.0 bar | kN | 8,3 | 11,6 | ||
4.5 bar | kN | 9,4 | 13,1 | ||
5.0 bar | kN | 10,5 | 14,6 | ||
5.5 bar | kN | 11,6 | 16,2 | ||
6.0 bar | kN | 12,7 | 17,7 | ||
6.5 bar | kN | 13,8 | 19,3 | ||
6.8 bar | kN | 14,5 | 20,2 | ||
7.0 bar | kN | - | - | ||
7.5 bar | kN | - | - |
Reference values for brake force |
Number | Designation | MODEL 670.3/4 with zGM <= 7490 kg and vehicles with traction head zGM = 7490 kg | ||
BE42.10-N-1002-17I | Minimum force on 2nd axle at test pressure | 0.4 bar | kN | 0,0 |
1.0 bar | kN | 1,9 | ||
1.5 bar | kN | 3,4 | ||
2.0 bar | kN | 4,9 | ||
2.5 bar | kN | 6,3 | ||
3.0 bar | kN | 7,7 | ||
3.5 bar | kN | 9,1 | ||
4.0 bar | kN | 10,5 | ||
4.5 bar | kN | 11,9 | ||
5.0 bar | kN | 13,3 | ||
5.5 bar | kN | 14,7 | ||
6.0 bar | kN | 16,1 | ||
6.5 bar | kN | 17,5 | ||
6.8 bar | kN | 18,4 | ||
7.0 bar | kN | - | ||
7.5 bar | kN | - |
360 589 00 21 00
Test kit
Referenced documents
- as0000z000501a Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.
- as4200z000101a Risk of death caused by limbs being caught or crushed by rotating parts when performing tests on the brake test stand