Inspect cylinders with a light probe

AR01.00-G-0200DD

Inspect cylinders with a light probe

23.09.2019

Engine

900.91/92 in model 000.001

Engine

902.91/93 in model 000.001

Engine

904.94/95/96/97 in model 000.001

Engine

906.93/94/95/96/98/99 in model 000.001

Engine

924.91/93/94 in model 000.001

Engine

925.9 in model 000.001

Engine

926.91/92/93/95/97/98 in model 000.001

1

Endoscope

 Caution

Risk of injury to skin and eyes due to handling of engine oil. Risk of poisoning caused by swallowing engine oil

Wear protective gloves, protective clothing and safety glasses.
Do not fill engine oil into beverage containers.

AS18.00-Z-0001-01A

 Warning

Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.

Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.

AS20.00-Z-0001-01A

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

 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

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-N-5000-01H

Notes for evaluation of a cylinder barrel

AH01.40-N-0001-03A

Notes on the assessment of pistons and piston rings

AH03.10-N-0001-04A



Remove

1

Remove nozzle holder assembly at cylinder to be checked.

AR07.03-G-6831DD

2

Remove cap from the timing case and attach turning device to the engine.

AR03.30-W-1600-03J

 Bolt, turning device to timing case

*BA01.60-N-1003-01I

 Turning device

*904589046300

Illuminate

3

Set piston of the cylinder to be checked to bottom dead center with the turning device.

 Turning device

*904589046300

4

Connect endoscope (1) and switch on.

 See information from body manufacturer. Coolant temperature approx. 80 °C

5

Guide endoscope (1) through the bore of the protective sleeve into the cylinder.


The endoscope (1) must not touch on the piston or knock.
The lens probe tip will be damaged otherwise.

 The ambient temperature must be  80 °C.

6

Check condition of cylinder barrel, piston crown, clearance volume, and valves.

If there is a problem or if it is not clear,



Remove cylinder head.

AR01.30-G-5800DD

7

Illuminate remaining cylinders to be tested in the same way.

 For 4-cylinder engines the cylinder can be illuminated with two crankcase positions: cylinder 1 and 4 in BDC, cylinder 2 and 3 in BDC.
For engine 6 -cylinder engines the cylinders can be illuminated at three crankshaft positions: Cylinder 1 and 6 at bottom dead center, Cylinder 2 and 5 at bottom dead center Cylinder 3 and 4 at bottom dead center.



Install

8

Remove turning device from the engine and attach the cap.

AR03.30-W-1600-03J

 Inspection hole cap to timing case

*BA01.60-N-1002-01I

 Turning device

*904589046300

9

Install nozzle holder assembly.

AR07.03-G-6831DD

 Timing case

Number

Designation

Engine 900.9, 902.9, 904.9, 906.9, 924.9, 925.9, 926.9 in model 000.001

BA01.60-N-1002-01I

Inspection hole cap to timing case

Nm

25

 Timing case

Number

Designation

Engine 900.9, 902.9, 904.9, 906.9, 924.9, 925.9, 926.9 in model 000.001

BA01.60-N-1003-01I

Bolt, turning device to timing case

Nm

25