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ABS Hydraulic Modulator with Control Unit, Remove
and Install/Replace (ABS 8.0, ABS 8.0 ESP)
Warning: Before
repair work on the ABS hydraulic modulator or the control unit for
the ABS hydraulic modulator, it is essential to read the repair
instructions.
 Remove
| 1. |
Pull seal away from plenum chamber (2) as far as necessary
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| 2. |
Fold up covering flap (1) for brake master cylinder.
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| 3. |
Fit KM-558-10 to brake fluid
reservoir
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Unscrew closure cap (1)
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| • |
Fill up brake fluid to rim
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Important: Catch escaping brake
fluid
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| 4. |
Release brake lines (2) on brake master cylinder
| • |
Release 2x nuts
Note: Use pipe
wrench.
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| • |
Remove brake line guide (3) from bulkhead
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Important: Collect escaping brake
fluid and close outlet.
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| 5. |
Remove ABS hydraulic modulator
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Remove all brake pipes from hydraulic unit
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Unscrew 6 x nuts (arrow)
Note: Use pipe wrench.
Note allocation of brake line.
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| • |
Remove cable connector (1)
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| • |
Press hydraulic modulator from bracket towards bulkhead
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Install
| 6. |
Install ABS hydraulic modulator
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Press hydraulic modulator into bracket
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| • |
Tighten 2x nuts (2) 10 Nm
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| • |
Attach cable connector (1)
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| • |
Attach all brake pipes to hydraulic unit
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Tighten 6x nuts (arrow) 16 Nm
Note: Use pipe wrench.
Note allocation of brake line.
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| 7. |
Attach brake lines (2) to brake master cylinder
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Tighten 2x nuts 16 Nm
Note: Use pipe
wrench.
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| • |
Attach brake line guide (3) to bulkhead
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| 8. |
Bleed brake system and check for leaks 
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| 9. |
Close covering flap (1) for brake master cylinder
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| 10. |
Fit seal to plenum chamber (2)
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| 11. |
When replacing control module: program ABS control module
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