Check Compression Pressure - Ar01.00-D-1201TSV

Engine 642 in model 907

	Risk of death . Death may occur if body parts are drawn into rotating vehicle parts.	Do not insert your hand into rotating parts. Wear closed and snug-fitting work clothes. Secure area of rotating vehicle components against unauthorized access.	AS00.00-Z-0004-01A
	Risk of explosion caused by fuel igniting. Risk of injury to skin and eyes caused by fuel spraying out at high pressure	Keep all ignition sources out of hazard area. Do not carry out any work on system when it is pressurized.	AS07.16-Z-0001-01A
	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
	Risk of injury . Skin or eye injuries may result when handling hot or glowing objects.	Wear protective gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
	Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove
1	Start engine and warm up to operating temperature.	Operating temperature is reached at an oil temperature of approx. 80 °C. Only check compression pressure for an engine is at operating temperature.
2	Switch off ignition and store transmitter key outside of transmission range (min. 2 m).
3	Remove glow plugs.		AR15.20-D-4111TSV
	Preparation
4	Disconnect engine wiring harness electrical connector 1 (X26/46x1).
5	Attach connection line (4) for the compression pressure recorder (1) to engine wiring harness electrical connector 1 (X26/46x1).	To this end, insert suitable connection line at pin 8 (arrow). Electrical connection kit	Fig 2
6	Connect compression pressure recorder (1) to jump-start connection point electrical connector (X4/43).	Compression tester	Fig 4
7	Crank engine with compression pressure recorder (1).	To this end, connect connection line to compression pressure recorder (1). To remove combustion residues from the cylinders. Compression tester	Fig 4
	Check
8	Manually screw screw-in piece (3) into respective glow plug hole.	Screw-in fitting	Fig 3
9	Attach compression pressure recorder (1) with adapter (2) to screw-in piece (3).	Compression tester	Fig 1
		Screw-in fitting	Fig 3
10	Check compression pressure.	To this end, crank engine over the contact switch on compression pressure recorder (1). Turn engine through at least eight revolutions. Installation tolerance or new value of compression pressure	*BE01.00-N-1001-04TS
		Wear limit or limit value of compression pressure	*BE01.00-N-1002-04TS
		Compression pressure, permissible difference between the cylinders	*BE01.00-N-1003-04TS
		Compression tester If minimum compression pressure is not reached or the permissible difference between the individual cylinders is exceeded, ↓ Check cylinder leakage.	Fig 4
			AR01.00-D-1300TSV
11	Remove compression pressure recorder (1) with adapter (2) from screw-in piece (3).	Change compression pressure recorder (1) over to next cylinder to be checked. Compression tester	Fig 4
		Screw-in fitting	Fig 3
12	Remove screw-in piece (3).	Screw-in fitting	Fig 3
13	Perform check of additional cylinders in same manner.
	Refinish
14	Remove compression pressure recorder (1) from jump-start connection point electrical connector (X4/43).	Compression tester	Fig 4
15	Remove connection line from compression pressure recorder (1).	Compression tester	Fig 4
		Electrical connection kit	Fig 2
16	Remove compression pressure recorder (1) from screw-in piece (3).	Compression tester	Fig 4
		Screw-in fitting	Fig 3
17	Remove screw-in piece (3).	Screw-in fitting	Fig 3
18	Connect engine wiring harness electrical connector 1 (X26/46x1).	To do so, remove connection line. Electrical connection kit	Fig 2
	Install
19	Install glow plugs.		AR15.20-D-4111TSV