HYOSUNG 2010 ST7, Service Manual

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PERIODIC MAINTENANCE 2-28
HIGH OIL PRESSURE
Engine oil viscosity is too high
Clogged oil passage
Combination of the above items
OIL PRESSURE TEST PROCE-
DURE
Check the engine oil pressure in the following manner.
Remove the oil check plug and install the adapter
of the oil pressure gauge at the removed position.
Connect an engine tachometer.
Warm up the engine as follows :
Summer : 10 min. at 2,000 rpm.
Winter : 20 min. at 2,000 rpm.
After warming up, increase the engine speed
to 3,000 rpm. (with the engine tachometer), and
read the oil pressure gauge.
Tighten the engine oil check plug to the specified
torque.
LOW OIL PRESSURE
Clogged oil filter
Oil leakage from the oil passage
Damaged O-ring
Defective oil pump
Combination of above items
OIL PRESSURE
Check the engine oil pressure periodically. This will give a good indication of the condition of the moving parts.
If the engine oil pressure is lower or higher than the specification, the following causes may be considered.
2.0 6.0 kgf/cm
2
(at 60 3,000 rpm)
Standard
Oil pressure
Engine tachometer : 09900-26006
Oil pressure gauge : 09915-74511
Engine oil check plug
: 18 N · · m (1.8 kgf · · m)
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