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Control Unit for ABS Hydraulic Modulator, 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. |
Remove ABS hydraulic modulator 
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| 2. |
Remove control module (1) for ABS hydraulic modulator
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Clamp hydraulic unit in vice with control module uppermost
Note: Use protective
jaw.
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Unscrew 4x bolts (arrow) and remove control unit
Note: Note position of
screws as they differ in length.
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| 3. |
Check gasket on control module is in perfect condition and
clean. Control module should be replaced if gasket is damaged.
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| 4. |
Clean sealing surfaces on hydraulic unit
Note: Clean carefully
with lint-free cloth. Soak cloth with spirit in the case of heavy
deposits or gasket residue.
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Install
Important: Never press down on
the control unit on the cover surface, but only on the outer
housing edge
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| 5. |
Attach control module (1) for ABS hydraulic modulator
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Align control unit centrally and carefully press onto hydraulic
modulator
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| • |
Screw in 4x new screws of the right length (arrow)
Note: Only insert
screws until the head is flush with the control module.
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Tighten 4x bolts (arrow) working diagonally 1.5 Nm
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Tighten 4x bolts (arrows) working diagonally 3 Nm
Note: Ensure the
control module is arranged correctly on the hydraulic unit.
Hydraulic unit must be replaced if screws do not go in properly or
starting torque is not reached.
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| 6. |
Install ABS hydraulic modulator
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| 7. |
When replacing control module: program ABS control module
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