ar0100w0200j

Inspect cylinders with a light probe

Type ar · topic 01.00 · version 0106 · 2014-03-10

Applies to: ENGINE 900.9 in MODEL 375.1, 970, 972, 975, 976 ENGINE 902.9 in MODEL 375.1, 970, 972, 974, 975, 976 ENGINE 902.9 in MODEL 375.3, 950.5/6, 952.5/6, 953.6, 954.5 ENGINE 902.9 in MODEL 957 without CODE MS8 (Natural gas engine) ENGINE 924.9 in MODEL 970, 972, 974, 975, 976 ENGINE 925.9 in MODEL 970, 972, 974 ENGINE 926.9 in MODEL 950.5/6, 952.5/6, 953.6, 954.5, 957

Where it sits

Function group 1 Engine › 01 Complete engine, crankcase ventilation, cylinder head, crankcase › 01.00 General — Series 375 (models 1**, 3**) · Series 900 (models 9**) · Series 902 (models 9**) · Series 950 (models 5**, 6**) · Series 952 (models 5**, 6**) · Series 953 (models 6**) · Series 954 (models 5**) · Series 957 · Series 970 · Series 972 · Series 974 · Series 975 · Series 976

EinPAS 15 Engine › 15.15 Combustion engine, complete/engine housing/crank assembly › 15.15.15 internal combustion engine, complete — Series 375 (models 1**, 3**) · Series 900 (models 9**) · Series 902 (models 9**) · Series 950 (models 5**, 6**) · Series 952 (models 5**, 6**) · Series 953 (models 6**) · Series 954 (models 5**) · Series 957 · Series 970 · Series 972 · Series 974 · Series 975 · Series 976

Also applies to engines/gearboxes: 924 9**, 925 9**, 926 9**

AR01.00-W-0200J

Inspect cylinders with a light probe

16.01.2014

ENGINE

900.9 in MODEL 375.1, 970, 972, 975, 976

ENGINE

902.9 in MODEL 375.1, 970, 972, 974, 975, 976

ENGINE

902.9 in MODEL 375.3, 950.5/6, 952.5/6, 953.6, 954.5

ENGINE

902.9 in MODEL 957

without CODE MS8 (Natural gas engine)

ENGINE

924.9 in MODEL 970, 972, 974, 975, 976

ENGINE

925.9 in MODEL 970, 972, 974

ENGINE

926.9 in MODEL 950.5/6, 952.5/6, 953.6, 954.5, 957

Inspect cylinders with a light probe

1

Endoscope (cold light)

W01.00-1064-12

Remove

1

Remove nozzle holder combination

AR07.03-W-6831J

Only on the cylinder to be checked.

2

Remove cap on timing case and attach cranking device

AR03.30-W-1600-03J

Bolt, turning device to timing case

*BA01.60-N-1003-01A

Turning device

*904589046300

Illuminate

3

Set piston on cylinder to be checked to BDC using cranking device

4

Connect endoscope (1) and switch on

Observe operating instructions from the manufacturer when connecting.

5

Introduce endoscope (1) through bore of the protective sleeve in 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

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

In case of damage or when in doubt:

Remove cylinder head.


MODELS 375, 950, 952, 953, 954, 970, 972, 974, 975, 976

AR01.30-W-5800J


Model 957

AR01.30-W-5800JB

7

Illuminate remaining cylinders in the same way if necessary

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 cranking device at timing case and attach cap

AR03.30-W-1600-03J


The cranking device must be removed before starting the engine.
The ring gear or the timing case will be destroyed otherwise.

Inspection hole cap to timing case

*BA01.60-N-1002-01A

Turning device

*904589046300

9

Install nozzle holder combination

AR07.03-W-6831J

Timing case

Number

Designation

ENGINE 900.9, 902.9, 904.9, 906.9

ENGINE 924.9, 925.9, 926.9

BA01.60-N-1002-01A

Inspection hole cap to timing case

Nm

25

25

Timing case

Number

Designation

ENGINE 900.9, 902.9, 904.9, 906.9

ENGINE 924.9, 925.9, 926.9

BA01.60-N-1003-01A

Bolt, turning device to timing case

Nm

25

25

Inspect cylinders with a light probe

904 589 04 63 00

Turning device

Referenced documents