Reassembly Of Fuel Injectors; Installation Of The Fuel Injectors - Yanmar 2TNV70 Service Manual

FUEL SYSTEM
4. Retest the fuel injector. See Testing of Fuel
Injectors on page 7-23. If the injector cannot be
adjusted to the appropriate pressure, discard
the fuel injector.

Reassembly of Fuel Injectors

1. Secure the injector in a soft-jawed vise with the
nozzle end up.
2. Reinstall the shims, nozzle spring, nozzle
spring seat, valve stop spacer, nozzle valve,
and nozzle body.
3. Reinstall the nozzle case nut. Tighten it to
specification.

Installation of the Fuel Injectors

1. Insert the nozzle gaskets (Figure 7-36, (5)) and
nozzle protector (Figure 7-36, (6)) in the
cylinder head.
2. Reinstall the fuel injector (Figure 7-36, (4)) in
the cylinder head and tighten to specification.
3. Reinstall new copper washers
(Figure 7-36, (3)), high-pressure and return
fuel lines (Figure 7-36, (2)). See Installation of
High-Pressure Fuel Injection Lines on
page 7-11 and Installation of Fuel Return Line
on page 7-12. Tighten fuel line nuts
(Figure 7-36, (1)) to specifications.
4. Prime the fuel system. See Priming the Fuel
System on page 4-14.
5. Operate the engine and check for fuel leaks.
7-28
(1)
(2)
(3)
(4)
(6)
(5)
0002213
Figure 7-36
TNV IDI Service Manual
Fuel Injectors