Yanmar 4TNV98 Service Manual page 105

Reassembly of the Valve Cover
1. Lightly grease a new valve cover gasket (Figure
6-73, (6)). Place the gasket in the groove of the
valve cover (Figure 6-73, (3)).
2. Place the valve cover on the cylinder head.
3. Be sure new O-rings (Figure 6-73, (5)) are
installed on the valve cover nuts. Reinstall and
tighten the valve cover nuts (Figure 6-73, (4)).
Figure 6-73
4. Reinstall the fuel injector grommets (Figure 6-73,
(1)).
5. Reinstall the exhaust manifold using a new gasket.
Tighten the bolts to specification.
6. Reinstall the intake manifold using a new gasket.
Tighten the bolts to specification.
7. Reconnect the fuel injector return hose and fuel
injection pump coolant hoses.
8. Reinstall the high-pressure fuel line grommets
into the valve cover.
4TNV98 & 4TNE98 Diesel Engine
9. Reinstall the high pressure and fuel return lines.
See Installation of the Fuel Injectors on page 167.
10. Reinstall the coolant pump. See Reassembly of
Engine Coolant Pump on page 208.
11. Reinstall the alternator.
12. Reconnect the turbocharger oil supply and drain
lines.
13. Reconnect the air intake hose.
Assembly of Glow Plugs
4TNE98 Engine Only
1. Install the glow plugs (Figure 6-33, (1)) into the
cylinder head (Figure 6-33, (4)). Torque the glow
plugs to the specified torque.
2. Connect the glow plug harness (Figure 6-33, (3))
to the glow plugs.
3. Install the glow plug cover (Figure 6-33, (2)) on
each glow plug.
103
Figure 6-33
Section 3. Engine