Cylinder Compression Pressure - DAELIM VJF125 Service Manual

SHIM SHIM SHIM SHIM SHIM SHIM SHIM
SHIM SHIM SHIM SHIM SHIM SHIM
SHIM SHIM SHIM SHIM
SHIM SHIM SHIM SHIM SHIM
COMPRESSION PRESSURE GAUGE COMPRESSION PRESSURE GAUGE COMPRESSION PRESSURE GAUGE COMPRESSION PRESSURE GAUGE COMPRESSION PRESSURE GAUGE
COMPRESSION PRESSURE GAUGE COMPRESSION PRESSURE GAUGE COMPRESSION PRESSURE GAUGE COMPRESSION PRESSURE GAUGE
COMPRESSION PRESSURE GAUGE COMPRESSION PRESSURE GAUGE COMPRESSION PRESSURE GAUGE COMPRESSION PRESSURE GAUGE COMPRESSION PRESSURE GAUGE COMPRESSION PRESSURE GAUGE
COMPRESSION PRESSURE GAUGE COMPRESSION PRESSURE GAUGE COMPRESSION PRESSURE GAUGE COMPRESSION PRESSURE GAUGE COMPRESSION PRESSURE GAUGE COMPRESSION PRESSURE GAUGE COMPRESSION PRESSURE GAUGE
INSPECTIONS / ADJUSTMENTS
•The type of shim is 33
•The clearance of shim is 1,500mm to 2,300mm with
0.025mm clearance.
• Demanded thickness of shim :A
• Recorded clearance of the valve lifter : B
• Specified clearance of the valve lifter : C
(In :0.15mm / Ex : 0.20mm)
• Removed thickness of the shim : D
• how to calculate : A = (B-C)+D
Example)
B : 0.06mm
D : 1.875mm
C : 0.15mm(IN)
A = (0.06-0.15)+1.875mm
New thickness of the shim : 1.775mm
•Meaure the thickness of new shim and removed shim,
using a micrometer accurately.
•If the demanded thickness of shim is over 2,300mm,
check the valve seat and remove the carbon deposit
and modify the valve seat.
• Install the chosen shim into the valve spring retainer.
• Apply the molybdenum to wet side of valve lifter and
install the lifter.
• Install the cam shaft and rotate the crank shaft for many
timed and recheck the valve clearance after setting the
shim.
• Apply the engine oil to O-ring of pulse generator cover
cap and install the cap.
TORQUE : 0.6kgf-m

CYLINDER COMPRESSION PRESSURE

• Warm up the engine to normal operating temperature.
• Stop the engine, disconnect the spark plug caps and
spark plug. install the compression gauge. open the
throttle completely and crank the engine with the
starter motor until the gauge reading stops rising.
Tool:compression gauge.
•The maximum reading is usually reached within
4~7seconds
• compression 13.0kg f/
If compression is low, check the following
-Incorrect valve clearance adjustment.
-Valve leakage.
-Leak the gasket from the cylinder head.
-Worn piston/cylinder.
If compression is high, check the following
-Carbon deposits on the piston head, cylinder head.
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