Inspect cylinders with a light probe

AR01.00-S-0200PS

Inspect cylinders with a light probe

22.05.2018

Engine

642 in model 470, 471

1

Endoscope

2

Flexible test probe

 Danger

Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contactwith fuel.

No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only.
Wear protective clothing when handling fuel.

AS47.00-Z-0001-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A



Remove

1

Switch off ignition and store transmitter key outside of transmitter range (at least 2 m).

2

Remove fuel injectors.

AR07.16-S-1020PS



Check

3

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

AR01.00-S-0100PS

4

Connect endoscope (1).



000 588 01 21 00 Endoscope

WS01.00-P-0097B

5

Insert flexible test probe (2) of the endoscope (1) through the bore of the removed fuel injector into the cylinder and den inspect cylinder with light probe.

6

Check cylinder barrel.

General information on inspecting cylinder walls

AH01.00-P-0300-01TD

If the cylinder barrel is become very rough or the honing marks are no longer visible,



remove left and right cylinder head and determine cause.

Remove/install left cylinder head

AR01.30-S-5770PS

Remove/install right cylinder head

AR01.30-S-5780PS

7

Check remaining cylinders in same manner.



Install

8

Install fuel injectors.

AR07.16-S-1020PS