PERIODIC MAINTENANCE 2-25
OIL PRESSURE CHECK
Check the oil pressure periodically. This will give a good indication of the condition of the moving parts.
Oil pressure:
Low or high oil pressure can indicate any of the following conditions:
LOW OIL PRESSURE
* Clogged oil filter
* Oil leakage from the oil passage
* Damaged O-ring
* Defective oil pump
* Combination of the above items
HIGH OIL PRESSURE
* Engine oil viscosity is too high
* Clogged oil passage
* Combination of the above items
OIL PRESSURE TEST PROCEDURE
• Connect the multi circuit tester or engine tachometer to the
high-tension cord. (2-8)
• Remove the oil gallery plug 1.
• Install the oil pressure gauge and adaptor into the main oil
gallery.
• Warm up the engine as follows:
Summer: 10 minutes at 2 000 r/min
Winter: 20 minutes at 2 000 r/min
• After warming up the engine, increase the engine speed to
3 000 r/min (observe the tachometer), and read the oil pres-
sure gauge.
Oil gallery plug: 23 N·m (2.3 kgf-m, 16.5 lbf-ft)
09900-25008: Multi circuit tester set
09900-26006: Engine tachometer
09915-74511: Oil pressure gauge (600 kPa)
Above 30 kPa (0.3 kgf/cm², 4.3 psi)
at 3 000 r/min, oil temp. at 60 °C (140 °F)
Below 70 kPa (0.7 kgf/cm², 10.0 psi)
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