Testing Oil Pressure - Yanmar 6LPA-STP2 Service Manual

Testing Oil Pressure

12/05
TESTING OIL PRESSURE
Visually check the oil for deterioration, mixture of
water, discoloration or poor quality. If needed,
replace the oil.
• Oil grade: Grade CD of API classification
• SAE viscosity: 10W30 or 15W40
1. Check the engine oil level. The oil level must be
between the lower and upper limits of the oil
dipstick. If it is lower than the lower limit, check
for oil leaks and then add oil to the upper limit.
NOTICE: NEVER add oil exceeding the FULL
mark and ALWAYS measure oil level when the
engine is positioned horizontally.
2. Remove the oil pressure sender unit and attach
an oil pressure gauge
(Figure 8-1, (1)).
Figure 8-1
Figure 8-1
3. Start the engine and allow it to warm to normal
operating temperature and read the pressure
gauge:
Inspection Item Test RPM
Oil Pressure
4. Remove the oil pressure gauge.
6LPA Service Manual
(1)
0005351
Specification
2
800 0.3 kgf/cm , 0.03 MPa
or more (4.26 psi)
2
3800 4.5 kgf/cm , 0.44 MPa
(64 psi)
© 2007 Yanmar Marine International
5. Apply THREE BOND 1344, LOCTITE 242 or
equivalent (Figure 8-2, (1)) to the threaded
portion (2 to 3 threads) of the hydraulic sender
unit (Figure 8-2, (2)) and install the oil pressure
sender unit.
Figure 8-2
Figure 8-2
6. Start the engine and allow it to warm to normal
operating temperature and check for oil
leakage.
LUBRICATION
(1)
(2)
0005352
8-5