1113-01
2) Compression Pressure Test
Standard Service Data
A9912 0012B (001 589 76 21 00) Compression Pressure Tester-
Measuring Procedure
Warm the engine up to normal operating temperature.
Remove the spark plugs using the spark plug wrench.
Place the diagram sheet to compression pressure tester A9912 0012B (001 589 76 21 00).
Connect the adaptor to compression pressure tester A9912 0012B (001 589 76 21 00) and
install it into the spark plug hole.
Crank the engine approx. eight revolutions by using the start motor.
Compare the measurements of compression pressure tester A9912 0012B (001 589 76 21 00)
with the specifications.
Measure the compression pressure of the other cylinders in the same way.
If measured value is not within the specifications, perform the cylinder pressure leakage test.
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Discharge the combustion residues in the cylinders before testing the compression pressure.
Apply the parking brake before cranking the engine.
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