Yanmar 2TNV70, Operation Manual

Page: 99 / 142

PERIODIC MAINTENANCE
TNV Operation Manual 81
The cup of the separator is made from semi-
transparent material. In the cup is a red colored
float ring. The float ring will rise to the surface of
the water to show how much needs to be drained.
Also, some optional fuel filter / water separators
are equipped with a sensor to detect the amount
of contaminants. This sensor sends a signal to an
indicator to alert the operator.
Drain the fuel filter / water separator as
follows:
Figure 6
1. Position an approved container under the cup
(Figure 6, (1)) of the fuel filter / water
separator to collect the contaminants.
2. Close (Figure 6, (2)) the fuel cock
(Figure 6, (3)) .
3. Turn the retaining ring (Figure 6, (4)) to the
left (Figure 6, (9)) .
4. Carefully remove the cup (Figure 6, (1)) .
Remove the retaining spring (Figure 6, (6))
and float (Figure 6, (7)) from the cup. Pour
the fuel into an approved container and
dispose properly. Hold the bottom of the cup
with a shop towel to prevent the fuel from
dripping. Wipe up any spills immediately.
5. Clean the inside of the cup.
6. Inspect the condition of the mesh filter
(Figure 6, (10)) . Clean the mesh filter if
necessary.
7. Inspect the condition of the O-ring
(Figure 6, (11)) . Replace the O-ring if
necessary.
8. Put the float (Figure 6, (7)) and retaining
spring (Figure 6, (6)) inside the cup.
9. Reinstall the cup to the mounting flange
(Figure 6, (8)) and turn the retaining ring
(Figure 6, (4)) to the right (Figure 6, (5)) .
Hand tighten only.
10. Open the fuel cock (Figure 6, (3)).
11. Be sure to prime the diesel fuel system when
you are done. See Priming The Fuel
System on page 36 .
12. Check for fuel leaks.
Drain the fuel filter / water separator as
follows:
Figure 7
1. Position an approved container under the fuel
filter / water separator (Figure 7, (1)) to
collect the contaminants.
2. Close (Figure 7, (2)) the fuel cock
(Figure 7, (3)) .
3. Loosen the drain cock (Figure 7, (4)) at the
bottom of the fuel filter/water separator. Drain
any water collected inside.
4. Hand tighten the drain cock.
5. Open the fuel cock (Figure 7, (3)).
c
o
( 8 )
(6)
(7)
00005 9 0A
(5)
(1)
(3)
(9)
(2)
(4)
(10)
(11)
0000012C
(1)
(4)
(3)
(2)