Components Related To Cooling System; Freshwater Tank - Yanmar 6LPA-STP2 Service Manual

COOLING SYSTEM
COMPONENTS RELATED TO
COOLING SYSTEM

Freshwater Tank

NOTICE: Prevent dirt and debris from
contaminating the engine coolant. Carefully clean
the pressure cap and the surrounding area before
you remove the cap.
1. Remove the pressure cap (Figure 7-15).
WARNING! NEVER remove the pressure cap
if the engine is hot. Steam and hot engine
coolant will spray out and seriously burn
you. Allow the engine to cool down before
you attempt to remove the pressure cap.
Figure 7-15
Figure 7-15
2. Check the pressure cap. NOTICE: If the
pressure cap (Figure 7-16, (1)) is contaminated
by foreign matter, wash with water. Measure the
valve opening pressure by applying pressure to
the tester, using the pressure cap tester
(Figure 7-16, (2)).
• Standard valve opening pressure: 0.75 to
2
1.05 kgf/cm , 0.07 to 0.10 MPa
(10.6 to 14.9 psi)
• Minimum valve opening pressure: 0.6 kgf/cm
0.06 MPa (8.5 psi)
7-12

Components Related to Cooling System

Figure 7-16
( 1 )
3. Use the maximum reading of the tester as the
valve opening pressure. If the measured value
is less than the specified minimum valve
opening pressure, replace the pressure cap.
4. Check for the fresh water leakage. Fill the
freshwater tank (Figure 7-17, (1)) and engine
with fresh water and bleed air from the
freshwater path.
0005343
Figure 7-17
2
,
© 2007 Yanmar Marine International
( 2 )
Figure 7-16
( 2 )
Figure 7-17
6LPA Service Manual
0005344
( 1 )
0005345