Inspecting Cylinders With Inspection Lamp (Borescope)

1. Set piston to Bottom Dead Center (BDC).
2. Connect Motoskop and lens probe.
- Cylinder inspection equipment: Motoskop TW (cold light) with lens probe 103 26 CW (570 mm) and 86590CF (700 mm long, focusable), or equivalent borescope.
- Connect Motoskop TW 12 V to car battery.
- Connect Motoskop TW 220 V to mains.
3. Insert lens probe into cylinder.
4. Inspect and assess.

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.

Marking index at TDC pointer Piston in BDC position:
60 3 and 4
180 1 and 6
300 2 and 5