Remove/Install ETS/ASR/ESP® Hydraulic Unit - AR42.40-P-0816FR
Model 257
Model 290
| 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 | |
| Topical note | Notes on repairs to Brake system | AH42.00-P-0003-01A | |
| Topical note | Brake fluid notes | AH42.50-P-0001-01A | |
| Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | ||
| Notes on safety-relevant components | AH00.00-Z-0019-01A | ||
| Note on calculation of tightening torque when using insertion or socket tools with various effective lengths | AH00.00-P-0015-01CW | ||
| Remove/install | |||
| 1 | Carry out commissioning of ESP® control unit (N30/4). | When installing a new traction system hydraulic unit (A7/3). | |
| AD00.00-P-2000-06FR | |||
| 2 | Switch off ignition and store transmitter key outside of transmission range (min. 2 m). | ||
| 3 | Remove cover over Brake fluid reservoir. | ||
| 4 | Unscrew nuts (1) and place engine fuse and relay module (K40/8) with connected electric lines to one side. | ||
| Clean | |||
| 5 | Clean traction system hydraulic unit (A7/3) in the area of the Brake line connections. | Thoroughly clean area around connecting points before opening hydraulic system. Otherwise minute particles of dirt in the hydraulic components can result in malfunctions and total failure of the hydraulic system. Do not use any compressed air for cleaning when the Brake system is open. |
|
| Assembly cleaner | *BR00.45-Z-1028-04A | ||
| 6 | Release and disconnect electrical connector (2) from ESP® control unit (N30/4). | AR42.45-P-0820-01FR | |
It is essential to follow the work instructions for disconnecting the electrical connector (2). Otherwise the locking mechanism may be damaged. Do not touch, deform or damage contacts of electrical connector (2) and do not allow any foreign objects, soiling or fluids to enter the electrical connector (2). Otherwise, the Electronic Stability Program control unit (N30/4) may be damaged or it may malfunction. |
|||
| 7 | Mark Brake lines (3) relative to the corresponding connection on the traction system hydraulic unit (A7/3). | ||
| 8 | Detach Brake lines (3) from traction system hydraulic unit (A7/3). | Seal Brake lines (3) and connections on traction system hydraulic unit (A7/3). Otherwise the traction system hydraulic unit (A7/3) may be damaged by the entry of foreign objects. |
|
| *BA42.10-P-1004-04P | |||
| Fig 4 | |||
| Fig 2 | |||
| Fig 3 | |||
| 9 | Remove traction system hydraulic unit (A7/3) with ESP® control unit (N30/4) upwards and out of elastomer bearings (4). | ||
| Check | |||
| 10 | Check elastomer bearings (4) for wear and damage. | If there is a problem, ↓ Replace elastomer bearing (4). |
|
| 11 | Remove screw (6) and holder (5). | When installing a new traction system hydraulic unit (A7/3). | |
| *BA42.45-P-1001-01M | |||
| 12 | Install in the reverse order. | ||
| 13 | Bleed Brake system. | AR42.10-P-0010FR | |
| 14 | Read out and delete fault memory using vehicle diagnosis system. | ||
| AD00.00-P-2000-06FR |
BRAKE LINES, BRAKE HOSES
| Number | Designation | Model 257 | Model 290.658/659/661 except code B07/U69 | |
|---|---|---|---|---|
| BA42.10-P-1004-04P | Retaining screw, Brake line to hydraulic unit | Nm | 16 | 16 |
BRAKE LINES, BRAKE HOSES
| Number | Designation | Model 290.658/659/661 with code B07/U69, model 290.679/688/689 | |
|---|---|---|---|
| BA42.10-P-1004-04P | Retaining screw, Brake line to hydraulic unit | Nm | 16 |
ELECTRONIC STABILITY PROGRAM (ESP®)
| Number | Designation | Model 257 | Model 290 | ||
|---|---|---|---|---|---|
| BA42.45-P-1001-01M | Screw/bolt, bracket to traction system hydraulic unit | M8 | Nm | 18 | - |
| M10 | Nm | - | 27 | ||
REPAIR MATERIALS
| Number | Designation | Order number |
|---|---|---|
| BR00.45-Z-1028-04A | Assembly cleaner | A 000 986 56 01 |