DAELIM A-FOUR -, Руководство по обслуживанию

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8-1
8. CYLINDER HEAD/CYLINDER/PISTON
SERVICE INFORMATION
GENERAL SAFETY
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Take precautions not to damage the joint part with a driver when removing the cylinder, or not to damage the cooling
pin by striking the cylinder too hard.
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Take precautions not to damage the inside of the cylinder or the exterior part of the piston.
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Check parts after disassembling, and clean and dry with an air hose prior to taking measurements.
SPECIFICATIONS
TROUBLESHOOTING
Comperssion low
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Worn cylinder or piston rings
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Leaking valve seats
Excessive smoke
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Worn cylinder or piston
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Improper installation of piston rings
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Scored or scratched piston or cylinder wall
Overheating
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Excessive carbon build-up on the piston combustion
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Incorrect spark plug
Knocking or abnormal noise
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Worn piston and cylinder
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Excessive carbon build-up
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Low octane fuel
8
SERVICES INFORMATION 8-1
TROUBLESHOOTING 8-1
FAN COVER, SHROUD REMOVAL 8-2
CYLINDER HEAD/ CYLINDER/ PISTON 8-3
ITEM
CYLINDER
PISTON,
PISTON PIN,
PISTON RING
CYLINDER TO PISTON CLEARANCE
STANDARD VALUE SERVICE LIMIT
Inner diameter 39.000-39.005mm 39.05mm
Cylindricality - 0.10mm
Out of roundness - 0.10mm
Piston skirt outer diameter 38.955-38.970mm 38.90mm
Piston pin hole inner diameter 12.002-12.008mm 12.03mm
Piston pin outer diameter 11.994-12.000mm 11.98mm
0.002-0.014mm 0.03mm
Unit : mm(in)