Inspecting cylinders with inspection lamp, assessing - RA01001040200X(01-0200)
WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.
Preceding work:
Removing, installing spark plugs (REPLACE SPARK PLUGS )
Warning instructions when hood open (01-0085)
Operation no. of operation texts and work units or standard texts and flat rates:
| Piston | set to BDC; see table. |
| Motoskop and lense probe | connect. Motoskop TW 12 V to car battery Motoskop TW 220 V to mains. |
| Lense probe | insert into cylinder, remove. |
| Cylinder | inspect, assess; see note. |
COMMERCIALLY AVAILABLE TOOL
| Cylinder inspection equipment | e.g. | Karl Storz GmbH, 78532 Tuttlingen Motoskop TW (cold light) with lense probe 103 26 CW (570 mm) 86590CF (700 mm long, focussable) |
| Marking index at TDC pointer | Piston in BDC position |
|---|---|
| 60 | 3 and 4 |
| 180 | 1 and 6 |
| 300 | 2 and 5 |
NOTE:
In assessing the honing pattern of the cylinder surface it is necessary to distinguish between "visual" streaks or "seizure" streaks.
Visual streaks are not roughened and may originate from the ring gap; the traces of honing are still visible.
In the case of seizure streaks or cylinder wear, the cylinder surface is roughened, or smoothed and the traces of honing are no longer visible.