Test compression pressure

AR01.00-T-1200B

Test compression pressure

1.2.08

 

Remove/install

1

Open engine compartment flap

2

Set valve clearance



AP05.30-T-0560B

3

Warm up engine to normal operating temperature

 Coolant temperature must be at least 80 °C.

Danger!

Risk of explosion caused by ignition of flammable products, risk of poisoning caused by inhaling fuel vapors or swallowing fuel as well as risk of injury to skin and eyes exposed to fuel.

No fire, sparks, open flames or smoking.
Pour fuels only into suitable and appropriately marked containers.

Wear protective clothing when handling fuel.

AS47.00-Z-0001-01A

4

Remove injector with nozzle holder

AR07.03-T-6840B

5

Connect compression recorder

AR01.10-T-0010-01B



*BA07.03-N-1002-01A



*000589642100



*403589040700

Use the puller for the injector of the first cylinder.

*442589000700



*001589782100



*403589002100



Checking

6

Test compression pressure

Do the test with the injection pump fully switched off.

 Turn the engine at cranking speed until the pointer rises no further.

*BE01.00-N-1001-01C

*BE01.00-N-1002-01C

7

Install in the reverse order

Number

Designation

Engine 402.970

Engine 441.980

Engine 446.938

BE01.00-N-1001-01C

Wear limit or limit value

bar

20

20

20

BE01.00-N-1002-01C

Permissible difference between individual cylinders

bar

4

4

4

Number

Designation

Engine 402.970

Engine 441.980

Engine 446.938

BA07.03-N-1002-01A

Thrust bolt, injection nozzle to cylinder head

Nm

70

70

70