(Test Brake System With Pressure Tester For Leaks - AR42.10-P-0015GG)
Model 460, 461
Disk brakes on front axle
Model 463 (except 463.270/271) up to model year 2013 except code 979 (Special protection MB Guard)
Disk brakes on front axle
MODIFICATION NOTES
| 09.07.2009 | Remove left front wheel, added | Operation step 1 |
| Risk of poisoning from swallowing brake fluid. Risk of injury from skin and eye contact with brake fluid | Only pour brake fluid into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid. | AS42.50-Z-0001-01A | |
| Risk of injury . Skin or eye injuries may result when handling hot or glowing objects. | Wear protective gloves, protective clothing and safety glasses, if necessary. | AS00.00-Z-0002-01A | |
| 1 | Remove left front wheel | ||
| AP40.10-P-4050G | |||
| 2 | Unscrew bleed screw on left front brake caliper and connect pressure tester (051) Brake fluid notes |
AH42.50-P-0001-01A | |
| Notes on repairs to brake system | AH42.00-P-0003-01A | ||
| Notes on externally invisible brake fluid loss | Pressure testers for hydraulic oil systems must not be used for systems with brake fluid. Otherwise, the brake fluid will be mixed with mineral oil and this will cause the brake system to malfunction! |
AH42.10-P-9406-02A | |
| 3 | Bleed pressure tester (051) | ||
| Check | |||
| 4 | Start engine and run for 10 s at medium speed | ||
| 5 | With the engine running, depress brake pedal as far as possible using the brake pedal jack (080) | The pressure loss during the test duration of 5 minutes must not exceed 5 % of the regulated value. If the pressure drop is greater, the brake system may malfunction! |
|
| Fig 1 | |||
| Check | |||
| 6 | Switch off engine and operate brake pedal several times until vacuum is reduced | ||
| 7 | Turn back brake pedal winch (080) until a line pressure of approx. 3 bar overpressure is indicated on the pressure gauge | ||
| Fig 1 | |||
| 8 | Remove brake pedal jack (080) | ||
| 9 | Disconnect pressure tester (051) and mount bleed screw to left front brake caliper | ||
| 10 | Bleed left front brake caliper | AR42.10-P-0010GG |