Dinli DL-702 2008, Руководство по обслуживанию

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PERIODIC MAINTENANCE
Compression Pressure Check
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The compression pressure reading of a cylinder is a good
indicator of its internal condition.
●
The decision to overhaul the cylinder is often based on the results
of a compression test. Periodic maintenance records kept at your
dealership should include compression readings for each
maintenance service.
Low compression pressure can indicate any of the following
conditions.
○
Excessively worn cylinder walls.
○
Worn piston or piston rings.
○
Piston ring stuck in grooves.
○
Poor valve seating.
○
Ruptured or otherwise defective cylinder head gasket.
Compression Test Procedure
●
Remove the related parts and test the compression pressure in the
following manner.
○
Remove the spark plug.
○
Install the compression gauge in the spark plug hole. Make sure
that the connection is tight.
○
Keep the throttle lever in the fully open position.
○
Press the starter button and crank the engine for a few seconds.
Record the maximum gauge reading as the cylinder compression.
D002-Compression Gauge Set
Compression Pressure
Standard 950 kPa (9.5 kgf-cm
2
, 135 psi)
(Automatic decompression actuated)
NOTE
When the compression pressure goes below specification, check
the engine for conditions listed above.
NOTE
○
Before testing the engine for compression pressure, make
sure that the cylinder head nuts are tightened to the specified
torque and the valves are properly adjusted.
○
Warm up the engine before testing.
○
Make sure that the battery is fully charged.