Remove/Install Rear Electrohydraulic Suspension Pump Unit - AR32.50-P-0048ME
Model 167
with code 489 (AIRMATIC Dual Control/semi-active air suspension)
with code 490 (Electrohydraulic suspension)
| Risk of injury to skin or eyes from hydraulic fluid spraying out under pressure. Risk of poisoning from swallowing hydraulic fluid. | Depressurize hydraulic system completely before starting any work on it. Wear protective clothing and safety glasses. | AS00.00-Z-0013-01A | |
| Topical note | Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | |
| Topical note | Information on E-ACTIVE BODY CONTROL suspension | AH32.50-P-0002-01ME | |
| Notes on repair work on suspension components | AH00.00-P-0100-01A | ||
| Notes on safety-relevant components | AH00.00-Z-0019-01A | ||
| Remove/install | |||
| 1 | Remove left rear wheel and tire assembly. | AR40.10-P-1102ME | |
| 2 | Remove fender liner in rear left fender. | AR88.10-P-1302ME | |
| 3 | Empty hydraulic lines of electrohydraulic suspension using guided diagnosis. | AR32.50-P-0042ME | |
| 4 | Disconnect ground line from on-board electrical system battery. | AR54.10-P-0003ME | |
| 5 | Remove nuts (6) and detach ground lines from grub screws. | *BA00.19-P-1048-01M | |
| 6 | Open plugs, remove nuts (5) and detach electric lines (7) from grub screws. | *BA15.18-P-1003-03MRT | |
| 7 | Release and disconnect electrical connector (10). | ||
| 8 | Unclip electrical wiring harness (8) from cable ducts and guide out of vehicle. | ||
| 9 | Unclip electric lines from rear right suspension strut electrohydraulic controller unit (M67/3) and rear left suspension strut electrohydraulic controller unit (M67/2). | Fig 1 | |
| 10 | Remove hydraulic lines from rear right suspension strut electrohydraulic controller unit (M67/3) and rear left suspension strut electrohydraulic controller unit (M67/2). | AR32.50-P-0043ME | |
| 11 | Unscrew screws (9) and remove rear right suspension strut electrohydraulic controller unit (M67/3) together with rear left suspension strut electrohydraulic controller unit (M67/2). | ||
| 000 588 10 62 00 Support plate | WS26.00-P-3309B | ||
| 000 588 11 62 00 Major assembly mount | WS01.00-P-0092B | ||
| *BA32.50-P-1002-04A | |||
| 12 | Install in the reverse order. | ||
| Initial startup | |||
| 13 | Commission electrohydraulic suspension after filling hydraulic lines. | ||
| AD00.00-P-2000-06ME |
GROUND POINTS
| Number | Designation | Model 167 | ||
|---|---|---|---|---|
| BA00.19-P-1048-01M | Ground point MPE LF (48V) | W84/5 | Nm | 16 |
48 V ON-BOARD ELECTRICAL SYSTEM SUBHARNESS
| Number | Designation | Engine 256 in model 167, 213, 238, 257, 290 | |
|---|---|---|---|
| BA15.18-P-1003-03MRT | Nut, 48 V subharness to refrigerant compressor/electric motor | Nm | 16 |
ELECTROHYDRAULIC SUSPENSION
| Number | Designation | Model 167 with code 490 (Electrohydraulic suspension) | ||
|---|---|---|---|---|
| BA32.50-P-1002-04A | Screw, rear hydraulic pump bracket to rear axle | M12 | Nm | 100 |