Inspect cylinders with a light probe · ar0100p0200mra · Mercedes-Benz WIS

AR01.00-P-0200MRA

Inspect cylinders with a light probe

08.08.2019

Engine	177, 276.8 in model 205
Engine	178 in model 190
Engine	274.9 in model 205, 253
Engine	276.8 in model 253

Modification notes

05.08.2019

Reference document AH05.30-P-1000-02SZ added.

Operation step 8.

Shown on engine 274.9

Endoscope

P01.00-3403-06

 	Remove/install
1	Remove spark plugs.
		Engine 276.8 in model 205, 253	AP15.10-P-1580D
		Engine 178 in model 190	AP15.10-P-1580B
		Engine 274.9 in model 205, 253	AP15.10-P-1580CWF
		Engine 177 in model 205	AP15.10-P-1580C
2	Remove engine air intake duct upstream of air filter.	Engine 274.9 in model 205, 253
3	Remove lower engine compartment paneling.	Engine 177 in model 205
			AR61.20-P-1105LW
4	Remove charge air cooler and place to one side with attached coolant lines.	Engine 276.8 in model 205 Engine 276.8 in model 253
			AR09.41-P-6819MMV
5	Remove the circulation pump bracket.	Engine 178 in model 190
			AR09.41-P-6925MNB
6	Turn engine at center bolt of the crankshaft in the direction of engine rotation until the piston of the cylinder to be checked is at bottom dead center (BDC).	 Socket wrench bit	*001589650900
7	Connect the endoscope (1) and guide the flexible endoscope through the spark plug bore into the cylinder to be checked.
	000 588 01 21 00 Endoscope		WS01.00-P-0097B
	Check
8	Check cylinder barrels.
	General information on checking valves, valve seats and valve guides		AH05.30-P-1000-02SZ
	General information on inspecting cylinder walls	Engine 177, 276.8 in model 205 Engine 178 in model 190 Engine 276.8 in model 253	AH01.00-P-0300-01AMG
	General information on inspecting cylinder walls	Engine 274.9 in model 205, 253	AH01.00-P-0300-01A
		 If there is 'scoring' (wear to the cylinder), the cylinder barrel has become rough and honing marks are no longer visible.
		If the condition of the cylinder barrels is not clearly recognizable,
		
		Remove cylinder head.
		Right cylinder head Engine 178 in model 190	AR01.30-P-5780MNB
		Left cylinder head Engine 178 in model 190	AR01.30-P-5770MNB
		Cylinder head Engine 274.9 in model 205, 253	AR01.30-P-5800MRB
		Right cylinder head Engine 276.8 in model 205, 253	AR01.30-P-5780MMV
		Left cylinder head Engine 276.8 in model 205, 253	AR01.30-P-5770MMV
		Right cylinder head Engine 177 in model 205	AR01.30-P-5780MNA
		Left cylinder head Engine 177 in model 205	AR01.30-P-5770MNA
9	Install in the reverse order.

001 589 65 09 00

Socket wrench bit

Referenced documents

ah0100p030001a General information on inspecting cylinder walls
ah0100p030001amg General information on inspecting cylinder walls
ah0530p100002sz General information on checking valves, valve seats and valve guides
ap1510p1580b Replace spark plugs
ap1510p1580c Replace spark plugs
ap1510p1580cwf Replace spark plugs
ap1510p1580d Replace spark plugs
ar0130p5770mmv Remove/install left cylinder head
ar0130p5770mna Remove/install left cylinder head
ar0130p5770mnb Remove/install left cylinder head
ar0130p5780mmv Remove/install right cylinder head
ar0130p5780mna Remove/install right cylinder head
ar0130p5780mnb Remove/install right cylinder head
ar0130p5800mrb Remove/install cylinder head
ar0941p6819mmv Remove/install charge air cooler, water-cooled
ar0941p6925mnb Remove/install circulation pump for low-temperature water circuit
ar0941p6925mnb
ar6120p1105lw Remove/install lower engine compartment lining
ar6120p1105lwe Remove/install lower engine compartment lining
ws0100p0097b 000 588 01 21 00 Endoscope