PERIODIC MAINTENANCE 2-37
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 oil seal
* 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 CHECK PROCEDURE
• Connect the multi-circuit tester to the primary lead wire
(W/Bl).
" 09900-25008: Multi-circuit tester set
• Remove the main oil gallery plug
1.
• Install the oil pressure gauge and adaptor into the main oil
gallery.
• Warm up the engine.
• After warming up the engine, increase the engine speed to
6 000 r/min (observe the tachometer), and read the oil pres-
sure gauge.
• Install the oil gallery plug
1.
$ Oil gallery plug: 4,5 N·m (0.45 kgf-m, 3,25 lb-ft)
" 09915-74511: Oil pressure gauge
09940-40211: Adaptor
20 kPa (0.2 kgf/cm², 2.8 psi) at 6 000 r/min, oil temp. at 50 °C (122 °F)
% WARNING
Do not remove the oil pressure gauge adapter when
the engine is hot. Wait until engine cools.
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