Oil Pressure Check; Oil Pressure Test Procedure - Suzuki LT-Z90 Manual

OIL PRESSURE CHECK

Check the engine oil pressure periodically. This will give a good indication of the condition of the moving
parts.
Oil pressure:
10 – 40 kPa (0.1 – 0.4 kgf/cm², 1.4 – 5.7 psi) at 3 000 r/min, Oil temp. at 60 °C (140 °F)
If the oil pressure is lower or higher than the specification, the following causes may be considered.
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 tachometer onto the spark plug high-tension
cord.
• Remove the main 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.
09915-74511: Oil pressure gauge
09915-74531: Adaptor
• Apply engine oil to both sides of the main oil gallery plug
washers.
• Tighten the main oil gallery plug 1 to the specified torque.
Main oil gallery plug: 12 N·m (1.2 kgf-m, 8.5 lb-ft)
PERIODIC MAINTENANCE 2-31