Inspect cylinders with a light probe

AR01.00-P-0200VT

Inspect cylinders with a light probe

15.11.2019

Engine

113.989 in model 171.473

05

Cylinder illumination unit

R4

Spark plugs

 

Remove/install

 Danger

Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)

Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.

AS00.00-Z-0035-01A

 Danger

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.

AS00.00-Z-0010-01A

 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

1

Remove one spark plug (R4) for each cylinder.



AP15.10-P-1580VT

2

Move piston of cylinder to be checked to bottom dead center (BDC)

To do this, crank engine at center bolt of crankshaft in the direction of engine rotation:



Firing order

AR01.00-P-1300-03HA

3

Connect cylinder illumination unit (05) and guide flexible test probe of cylinder illumination unit (05) through spark plug bore into the respective cylinder



Check

4

Check cylinder barrel

General information on inspecting cylinder walls

AH01.00-P-0300-01VA

 If the condition of cylinder barrel is not clearly recognizable, cylinder head must be removed. Before removal, always observe the general information on testing cylinder barrels:

5

Conduct checking of other cylinders in the same way

6

Install in the reverse order