Inspect cylinders with light probe · ar0100w0200c · Mercedes-Benz WIS

AR01.00-W-0200C

Inspect cylinders with light probe

29.3.06

ENGINE 457.9 in MODELS 374, 375, 940, 942, 943, 944, 958

W01.00-1060-09

1  Flexible endoscope

3 Thermal protection sleeve

2  Cylinder inspection lamp

Modification notes

26.2.06

Document revised completely.

	Removing
1	Remove soundproofing at frame below
2	Attach turning device for engine		AR03.30-W-1600-03C
			*BA01.60-N-1003-01M
			*904589046300
3	Remove charge air manifold		AR09.41-W-8681D
4	Remove cylinder head cover	 Only on cylinder to be tested.	AR01.20-W-5014C
5	Remove injection line	 Only on cylinder to be tested.	AR07.15-W-9235C
6	Remove nozzle holder combination	 Pull out any sealing sleeve remaining in cylinder head.	AR07.03-W-6831D
	Inspect with light probe
7	Attach flexible endoscope (1) to cylinder illumination device (2) and switch on	 For connecting, refer to manufacturer's operating instructions. Use flexible endoscope (1) with a diameter  8.5 mm.
			*WH58.30-Z-1006-05A
			*WH58.30-Z-1007-05A
			*WH58.30-Z-1014-05A
			*WH58.30-Z-1014-05A
8	Lead flexible endoscope (1) through hole in heat protection sleeve (3) of cylinder to be checked	 The ambient temperature must be  80°C.
		 The flexible endoscope (1) must not touch the piston crown or bang on it otherwise the objective sensor tip will be damaged.
9	Position piston of cylinder to be inspected at bottom dead center	 Check position of piston using the flexible endoscope (1) and turn crankshaft using turning device.
			*904589046300
10	Inspect condition of cylinder wall, piston crown, compression chamber and valves	 If there is damage present or in case of doubt: 
		Remove cylinder head.	AR01.30-W-5800C
	Notes for evaluation of cylinder contact surface		AH01.40-N-0001-03A
	Information for assessment of piston and piston rings		AH03.10-N-0001-04A
11	Test remaining cylinders in the same way if necessary.	 All cylinders can be checked using 3 crankshaft positions: cylinder 1 and 6, 2 and 5 or 3 and 4.
	Install
12	Install nozzle holder combination		AR07.03-W-6831D
13	Install injection line		AR07.15-W-9235C
14	Install cylinder head cover		AR01.20-W-5014C
15	Install charge air manifold		AR09.41-W-8681D
16	Detach turning device for engine		AR03.30-W-1600-03C
			*BA01.60-N-1001-01M
			*904589046300
17	Attach soundproofing on bottom left and right of the frame

 Timing case

Number	Designation		Engine 457.9


BA01.60-N-1001-01M	Bolt, inspection hole cover to timing case	Nm	25
BA01.60-N-1003-01M	Bolt, turning device to timing case	Nm	25

904 589 04 63 00

Cranking device

Commercially available tools

Number	Designation
WH58.30-Z-1006-05A	Flexible endoscope, package contents 1 (complete unit), Firma Richard Wolf GmbH D-75438 Knittlingen Firma Karl Storz GmbH D-78532 Tuttlingen
WH58.30-Z-1007-05A	Flexible endoscope package contents 2 (for workshops which already have an approved endoscope from the Wolf or Storz company), Firma Richard Wolf GmbH D-75438 Knittlingen Firma Karl Storz GmbH D-78532 Tuttlingen
WH58.30-Z-1014-05A	Cylinder inspection equipment

Referenced documents

ah0140n000103a Notes for evaluation of a cylinder barrel
ah0310n000104a Notes on the assessment of pistons and piston rings
ar0120w5014c Remove/install cylinder head cover
ar0130w5800c Remove/install cylinder head
ar0330w160003c Attach cranking/blocking device for engine, detach
ar0703w6831d Remove/install nozzle holder combination
ar0715w9235c Remove/install MR/PLD injection lines
ar0941w8681d Remove/install charge air manifold