Corrosion/Paint Damage On Rear-End Door In Area Of Handle Strip (LI72.20-P-059434)
Publication date: 2014-07-17Reference number: LI72.20-P-059434
CORROSION/PAINT DAMAGE ON REAR-END DOOR IN AREA OF HANDLE STRIP
TECHNICAL SERVICE BULLETIN
Reference Number(s): LI72.20-P-059434 Version 1, Date of Issue:
July 17, 2014
| MERCEDES-BENZ: | Model series 163 |
| DESIGN GROUP: | 72.20 Rear door, tailgate |
| REASON FOR CHANGE: | Optimization of technical content |
COMPLAINT
Corrosion or paint damage in the area of the opener cutout.
Corrosion or paint damage in the area of the handle strip.
CAUSE
Sharp stamping burrs or inadequate coating of opener cutout.
Tolerances between handle strip and liftgate too tight.
REMEDY
- Replacement of the liftgate is permissible when there is stock removal (in the sheet steel) of more than 1.5 mm or rust-through damage over a length of 3 cm in the area of the handle cutout. See picture "Reference sample" in the attachment.
Replace rear-end door: Always deburr the opener cutout before painting.
Remove/install rear-end door, model 163, see AR72.20-P-3500GH
Corrosion in handle strip/opener cutout area: For designation see "Rear-end door components" in attachment.
- In the event of problems, visually inspect area (A) around handle strip (2) of rear-end door (1).
- Remove license plate (3) from rear-end door (1).
- Remove handle strip (2) from rear-end door (1): See document AR72.20-P-3650GH.
- Remove corrosion on inside and outside around area (A) of handle strip (2) on rear-end door (1).
- Paint rear-end door (1): See document AR98.00-P-0200-08D.
- Before installing handle strip (2) onto rear-end door (1), wax surrounding area using MB cavity preservation wax: See document AR97.20-P-0500A. For preservation agents see "Parts"
- Mask off rear-end door (4) in areas (2) using commercially available PU tape: See picture "Adhesive points" in attachment.
- Install in the reverse order.
ATTACHMENTS
ATTACHMENTS
| File | Description |
|---|---|
| Reference sample | |
| Components of rear-end door | |
| Masking locations |
PARTS
PARTS
| Part number | ES1 | ES2 | Designation | Quantity | Note | EPC | Other make part |
|---|---|---|---|---|---|---|---|
| A 000 986 72 70 | 10 | Preservation agent | X |
WORK UNITS
WORK UNITS
| Op. no. | Operation text | Time | Damage code | Note |
|---|---|---|---|---|
| 74201 47 | Rear-end door is repaired. |
WIS-REFERENCES
WIS-REFERENCES
| Document number | Title | Note | Allocation |
|---|---|---|---|
| AR72.20-P-3500GH | Remove/install rear-end door | Remedy | |
| AR72.20-P-3650GH | Remove/install rear-end door handle strip | Remedy | |
| AR98.00-P-0200-08D | Masking for painting the rear-end door | Remedy | |
| AR97.20-P-0500A | Preparation of corrosion protection materials prior to painting | Remedy |