ar0100p0200sm

Inspect cylinders with a light probe

Type ar · topic 01.00 · version 0106 · 2020-05-11

Applies to: Engine 160.910 in model 450.3/4 toWME01MC012H106037 Engine 160.920 in model 450.3/4 As of WME4503001J000001

Where it sits

Function group 1 Engine › 01 Complete engine, crankcase ventilation, cylinder head, crankcase › 01.00 General — Series 450 (models 3**, 4**)

EinPAS 15 Engine › 15.15 Combustion engine, complete/engine housing/crank assembly › 15.15.15 internal combustion engine, complete — Series 450 (models 3**, 4**)

Also applies to engines/gearboxes: 160 910, 160 920

AR01.00-P-0200SM

Inspect cylinders with a light probe

24.03.2020

Engine

160.910 in model 450.3/4

toWME01MC012H106037

Engine

160.920 in model 450.3/4

As of WME4503001J000001

Inspect cylinders with a light probe

Shown on engine 160.9

1

Endoscope

2

Inspection light

R4

Spark plugs

P01.00-2655-06

Remove/install

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

1

Lift vehicle using the vehicle lift until the rear wheels can be turned freely.

2

Remove spark plugs (R4).

AP15.10-P-1580SM

3

Insert a suitable hose through spark plug threaded bore into corresponding cylinder and crank engine at center bolt of crankshaft belt pulley in direction of engine rotation until piston of cylinder to be checked is at bottom dead center.

4

Connect inspection light (2) to endoscope (1) and insert inspection light (2) through spark plug threaded bore into cylinder to be checked.

Endoscope

Check

5

Check cylinder barrel, piston crown, and valves.

General information on inspecting cylinder walls

AH01.00-P-0300-01A

In the case of visible cylinder wear the cylinder barrel is roughened and the honing marks are no longer visible.

In case of doubt:

remove cylinder head.


AR01.30-P-5800SN

6

Perform check of additional cylinders in same manner.

7

Install in the reverse order.

Referenced documents