Yanmar 4TNV98, Service Manual

Page: 59 / 246

4TNV98 & 4TNE98 Diesel Engine Section 2. Periodic Maintenance 57
10. Remove the fuel filter sensor assembly (Figure
5-15, (5)) by turning it to the left (Figure 5-15,
(3)) .
11.
Carefully remove the in-line fuel filter (Figure 5-
15, (7)) from the output nipple (Figure 5-15, (8))
that goes to the fuel injection pump.
12.
Dispose of the fuel, fuel filters and O-ring (if
replaced) properly. Follow the guidelines of the
EPA or other government agency.
13.
Carefully install the output nipple (Figure 5-15,
(8)) .
14.
Carefully install the fuel filter sensor assembly
(Figure 5-15, (5)) in the new fuel filter using the
new O-ring supplied with the fuel filter (Figure
5-15, (2)) by turning the fuel filter sensor
assembly to the right (Figure 5-15, (9)).
15.
Install the drain plug (Figure 5-15, (1)) on the
new fuel filter (Figure 5-15, (3)) by turning the
drain plug to the right (Figure 5-15, (8)) . Hand
tighten only.
16.
Clean the fuel filter mounting surface (Figure 5-
15, (10)) and apply a small amount of diesel fuel
to the gasket of the new filter.
17.
Install the new fuel filter (Figure 5-14, (2)) by
turning it to the right (Figure 5-14, (4)) until it
contacts the mounting surface. Tighten one
additional turn.
18.
Open all fuel cocks in the fuel line.
19.
Reconnect the fuel filter sensor connector
(Figure 5-14, (1)) .
20.
Prime the fuel system. See Priming the Fuel
System on page 15.
21.
Check for fuel leaks.
Applicable Fuel Filter Part No.
(Figure 5-14, (2))
4TNE98 A409559
Clean Fuel Filter / Water Separator
DANGER
FIRE AND EXPLOSION HAZARD!
Diesel fuel is flammable and explosive under
certain conditions.
NEVER use diesel fuel as a cleaning agent.
Failure to comply will result in death or serious
injury.
DANGER
FIRE AND EXPLOSION HAZARD!
Diesel fuel is flammable and explosive under
certain conditions.
When you remove any fuel system component
to perform maintenance (such as changing the
fuel filter) place an approved container under
the opening to catch the fuel.
NEVER use a shop rag to catch the fuel. Vapors
from the rag are flammable and explosive.
Wipe up any spills immediately.
Wear eye protection. The fuel system is under
pressure and fuel could spray out when you
remove any fuel system component.
Failure to comply will result in death or serious
injury.