Inspect cylinders with a light probe

AR01.00-P-0200MSA

Inspect cylinders with a light probe

08.08.2019

Engine

256.9 in model 213, 238, 257, 290

Modification notes

05.08.2019

Information document AH05.30-P-1000-02SZ, added.

Operation step 6.

Example illustration

1

Light source

2

Endoscope

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

 

Remove/install

1

Remove spark plug of the cylinder to be checked.



AP15.10-P-1580E

2

Remove fan unit.

AR20.40-P-5050MSA

3

Mount protective plate on cooler.



WF58.50-P-0110-01A

4

Turn engine in direction of engine rotation until the piston of the cylinder to be checked is at bottom dead center (BDC).

 Counterholder

*654589004000

5

Connect endoscope (2) to light source (1) and insert through the spark plug bore in the cylinder to be checked.



000 588 01 21 00 Endoscope

WS01.00-P-0097B



Check

6

Check cylinder barrels.

General information on checking valves, valve seats and valve guides

AH05.30-P-1000-02SZ

General information on inspecting cylinder walls

AH01.00-P-0300-01AMG

If the condition of the cylinder barrel is not clearly recognizable,



Remove cylinder head.

AR01.30-P-5800MSA

7

Install in the reverse order.