ar0100p1200vt

Testing compression pressure

Type ar · topic 01.00 · version 0100 · 2004-11-08

Applies to: ENGINE 113.989 in MODEL 171.473

Where it sits

Function group 1 Engine › 01 Complete engine, crankcase ventilation, cylinder head, crankcase › 01.00 General — Series 171 (models 473)

EinPAS 15 Engine › 15.15 Combustion engine, complete/engine housing/crank assembly › 15.15.15 internal combustion engine, complete — Series 171 (models 473)

Also applies to engines/gearboxes: 113 989

AR01.00-P-1200VT

Testing compression pressure

27.9.04

ENGINE 113.989 in MODEL 171.473

Testing compression pressure

P01.00-0372-06

01 Compression recorder

 	Remove/install
 Danger!	Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns when working in engine during starting procedure	Secure vehicle to prevent it from moving. Wear closed and snug-fitting work clothes. Do not grasp hot or rotating parts.	AS00.00-Z-0005-01A
1	Bring engine to operating temperature (approx. 80 °C)	 Test compression pressure only when engine is at normal operating temperature.
2	Remove air cleaner housing		AR09.10-P-1150AC
3	Remove spark plugs	 Remove only one spark plug at each cylinder.
	Replace spark plugs		AP15.10-P-1580VT
4	Crank engine with starter	 Do not crank engine at steering lock but use contact switch of the compression recorder.	AR01.10-P-0110PV
		 In order to remove the combustion residue from the cylinders, crank the engine for about 5 seconds with the starter.
	Check
5	Insert compression tester into spark plug bore	Compression recorder	*001589762100
6	Open throttle valve
7	Crank engine with starter	 Do not crank engine at steering lock but use contact switch of the compression recorder.	AR01.10-P-0110PV
8	Carry out test procedure at the remaining cylinders in the same way
9	Compare measurments obtained with the specified pressures		*BE01.00-P-1001-01D
			*BE01.00-P-1002-01D
			*BE01.00-P-1003-01D
		If the pressure is below the minimum compression pressure or if the permissible difference between individual cylinders is exceeded: 
		Inspect cylinders for leaks	AR01.00-P-1300VT
10	Install in the reverse order

Compression pressure

Number	Designation		Engine 113.989


BE01.00-P-1001-01D	Compression installation tolerance or new value	bar	9...12
BE01.00-P-1002-01D	Compression pressure wear limit or limit value	bar	8.0
BE01.00-P-1003-01D	Compression pressure permissible difference between individual cylinders	bar	1.5

Testing compression pressure

001 589 76 21 00

Compression recorder

Referenced documents

ap1510p1580vt Replace spark plugs
ar0100p1300vt Inspect cylinders for leaks
ar0110p0110pv Crank engine with starter
ar0910p1150ac Removing/installing air cleaner housing
as0000z000501a 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.