Testing Of Fuel Injectors - Yanmar 3TNV82A Service Manual

Fuel Injectors
Figure 7-46
• Tap the fuel injector out of the cylinder head
using the slide hammer.
7. Remove the injector nozzle protector
(Figure 7-45, (3)) and seat (Figure 7-45, (4))
from the cylinder head.
8. Repeat the steps to remove the remaining fuel
injectors.
4-Valve Cylinder Head
1. Close any fuel valves in the fuel supply line.
2. Remove the valve cover. See Removal of Valve
Cover on page 6-34.
3. Remove the injector return line
(Figure 7-47, (1)). Be careful not to bend the
line.
4. Remove the fuel injector mounting clamp bolts
(Figure 7-47, (2)). Lift the injector mounting
clamps (Figure 7-47, (3)) away from injector.
5. Remove the fuel injector (Figure 7-47, (4)) from
the cylinder head.
TNV DI Service Manual
0000815
(4)
(5)
(6)
Figure 7-47
Note: The fuel injectors can be removed by
manually pulling them out of the fuel
injector wells.
6. Remove the injector nozzle protector
(Figure 7-47, (5)) and seat (Figure 7-47, (6))
from the cylinder head. Discard both items.
7. Repeat steps to remove the remaining fuel
injectors.

Testing of Fuel Injectors

CAUTION
Never use a steel wire brush to clean
fuel injectors. Damage to the nozzle and
other components is likely to result.
1. Thoroughly clean the fuel injector nozzle using
clean diesel fuel and a brass wire brush.
FUEL SYSTEM
(2)
(1)
(3)
0000172en
7-33