Test compression pressure · ar0100p1200mcd · Mercedes-Benz WIS

AR01.00-P-1200MCD

Test compression pressure

18.1.13

ENGINE

660.9 in MODEL 451.3/4

Shown on engine 660.950

P01.00-2927-11

	Remove
1	Remove glow plugs		AR15.20-P-4111MCD
2	Disconnect electrical connections at the fuel injectors (Y76/1, Y76/2, Y76/3)
	Check
3.1	Screw adapter (1) into the glow plug thread for cylinder 1	ENGINE 660.950 in MODEL 451.3/4
		 Adapter	*450589029100
3.2	Screw screw-in piece into the glow plug thread	ENGINE 660.951 in MODEL 451.3/4
		 Screw-in fitting	*451589056300
4	Put on adapter (2)	 Adapter	*450589039100
5	Attach compression tester (3) to adapter (2)	 Compression tester set	*450589052100
6	Turn engine by actuating the Ignition/starter switch	 To check compression pressure, crank engine through at least 15 revolutions.
7	Disconnect compression tester (3)
8.1	Remove adapter (2, 1)	ENGINE 660.950 in MODEL 451.3/4
8.2	Remove screw-in piece and adapter (2)	ENGINE 660.951 in MODEL 451.3/4
9	Carry out test procedure at remaining cylinders in the same way
10	Remove test sheet from the compression tester (3) and compare measurements with the permissible values	Compression pressure: wear limit or limit value	*BE01.00-P-1002-01G
		Compression pressure: permissible difference between individual cylinders	*BE01.00-P-1003-01G
	Install
11	Contact electrical connections at the fuel injectors (Y76/1, Y76/2, Y76/3)
12	Install glow plugs		AR15.20-P-4111MCD
13	Read out and clear fault memory
			AD00.00-P-2000-04MCC

Check values for compression pressure

Number	Designation		ENGINE 660.950 ε=19	ENGINE 660.951
BE01.00-P-1002-01G	Compression pressure: wear limit or limit value	bar	18	18

Check values for compression pressure

Number	Designation		ENGINE 660.950 ε=19	ENGINE 660.951
BE01.00-P-1003-01G	Compression pressure: permissible difference between individual cylinders	bar	3	3

450 589 02 91 00

Adapter

450 589 05 21 00

Compression tester set

450 589 03 91 00

Adapter

451 589 05 63 00

Screw-in fitting