AR72.20-P-3604RT | Remove/install automatic rear-end door hydraulic unit | 15.3.10 |
MODEL 251 with CODE (890) Automatic liftgate
P72.20-2522-09
1 Rear hydraulic cylinder ball socket
2 Hydraulic cylinder
3 Cover
4 Hydraulic lines
M51/1 Rear-end door hydraulic pump
M51/1x1 Rear-end door hydraulic pump connector
P72.20-2523-09
1 Rear hydraulic cylinder ball socket
5 Left rear-end door hinge
6 Fuse
7 Screw
8 Luggage hook bracket
9 Covers
10 Plastic nuts
11 Roof speaker bracket
P72.20-2524-09
3 Cover
4 Hydraulic lines
12 Bracket
13 Nuts
14 Anchoring lug
15 Bolts
16 Load compartment floor
17 Bottom side paneling
18 Trim
19 Screw
20 Left load compartment floor bracket
21 Hydraulic pump housing
22 Hydraulic cylinder ball stud
23 Electrical connector
M51/1 Rear-end door hydraulic pump
M51/1x1 Rear-end door hydraulic pump connector
P72.20-2525-11
2 Hydraulic cylinder
22 Hydraulic cylinder ball stud
Modification notes
| Remove/install | ||
Danger! | Risk of injury caused by fingers being pinched or crushed when removing, installing or aligning hoods, doors, trunk lids, liftgates or sliding roof | Keep body parts and limbs well clear of moving parts. | |
| Completely remove automatic liftgate hydraulic unit as one unit | Do not remove components of automatic liftgate hydraulic unit individually ! Do not open hydraulic system of automatic liftgate hydraulic unit! | |
1 | Remove headliner | With code (413) Panoramic glass roof with top sliding roof | |
With code (414a) Power glass tilting/sliding roof | |||
Without code (413) Panoramic glass roof with top sliding roof, and without code (414) Power glass tilting/sliding roof, | |||
2 | Remove rear hydraulic cylinder ball socket (1) from left rear-end door hinge (5) | Lift retainer (6) and press off rear hydraulic cylinder ball socket (1). | |
Installation: Wipe off rear hydraulic cylinder ball socket (1) and grease slightly inside. Ensure that hydraulic cylinder ball socket (1) is mounted correctly on left rear-end door hinge (5). | |||
3 | Unscrew plastic nut (10) | If installed. | |
4 | Remove screw (7) | ||
5 | Remove covers (9) | ||
6 | Remove lashing eyes (14) | Remove bolts (15) and remove anchoring lugs (14) upward | |
Installation: Observe positioning lugs on anchoring lugs (14). | |||
| |||
7 | Remove bracket (12) | Unscrew three nuts (13) | |
8 | Open load compartment floor (16) | ||
9 | Remove paneling (18) from bottom side paneling (17) | Loosen at two lugs | |
10 | Slightly lift bottom side paneling (17) and unscrew bolt (19) | | |
11 | Disconnect rear-end door hydraulic pump connector (M51/1x1) | ||
12 | Open hydraulic pump housing (21) | Unlock both halves of hydraulic pump housing (21) at the two catch lugs (arrows). | |
13 | Disconnect electrical connector (23) | If installed. | |
14 | Unclip hydraulic lines (4) from all present cable ties | Installation: Install new cable ties. | |
15 | Unclip cover (3) from roof frame | ||
16 | Pry hydraulic cylinder (2) off of hydraulic cylinder ball socket (22) upward. | Installation: Wipe off hydraulic cylinder ball socket (22) and grease slightly. Position hydraulic cylinder (2) and press down until it arrests correctly on hydraulic cylinder ball socket (22). | |
17 | Remove automatic rear-end door hydraulic unit | Remove hydraulic lines (4) in area of roof speaker bracket (11) (if present), remove luggage hook bracket (8) and left load compartment floor bracket (20). | |
Installation: Insert rear-end door hydraulic pump (M51/1) correctly into profile in hydraulic pump housing (21). Position hydraulic cylinder (2) in roof frame and lay hydraulic lines (4). | |||
18 | Install in the reverse order | ||
19 | Check hydraulic oil level | Check installation position. Observe marking (cross) at bottom edge of reservoir. | |
20 | Correct hydraulic fluid level. | Only if oil level too low or too high. | |
Position rear-end door hydraulic pump (M51/1) vertically. | |||
The bolt on then hydraulic oil reservoir is the filling screw. | |||
21 | Check for proper function three times | Check pinch protection function to prevent personal injury. | |
22 | Check hydraulic oil level | Check installation position. Observe marking (cross) at bottom edge of reservoir. | |
23 | Correct hydraulic fluid level. | Only if oil level too low or too high. | |
Position rear-end door hydraulic pump (M51/1) vertically. | |||
The bolt on then hydraulic oil reservoir is the filling screw. |
Load compartment floor
Number | Designation | Model 251 | ||
BA68.00-P-1001-01A | Bolt, rear load compartment floor bracket to rear crossmember | Nm | 24 | |
Cargo retainers
Number | Designation | Model | ||
BA68.50-P-1002-03G | Bolt, anchoring lug to luggage compartment floor | Nm | 24 | |
Repair materials
Number | Designation | Order number |
BR00.45-Z-1091-06A | MB 342.0 hydraulic fluid | A 100 890 00 11 |
Referenced documents
- ar6830p4300rt Remove/install headliner
- ar6830p4300rta Remove/install headliner
- as0000z001101a Risk of injury caused by fingers being jammed or pinched when removing, installing or aligning hoods, doors, trunk lid/rear-end door or sliding roof.