FUEL SYSTEM
6-22
6LPA Service Manual
Fuel Injection Nozzle
© 2007 Yanmar Marine International
3. Measure dimension (D) of the tip packing using
a micrometer (Figure 6-33).
• Dimension (L4) = (D) - (C)
Figure 6-33
Figure 6-33
4. Measure dimension (E) of No. 2 pressure
spring seat, using a micrometer. If the pre-lift
length is out of the specified range, select a No.
2 pressure spring seat from the chart
(Figure 6-34). NOTICE: Increasing the seat
thickness reduces the pre-lift.
• Dimension (L5) = (t) - (E)
• Pre-lift = (L4) - (L5)
• Pre-lift standard: 0.08 to 0.10 mm (0.003 to
0.004 in.)
Figure 6-34
Figure 6-34
Thickness of No. 2
Pressure Spring Seat (t)
Figure 6-35
Figure 6-35
1 – Nozzle
2 – (E)
3 – Pre-lift
4 – Needle lift
5 – Detailed View of (E)
(L4)
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3
(D)
(t)
(E)
(L5)
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3.09 mm (0.122 in.)
3.12 mm (0.123 in.)
3.15 mm (0.124 in.)
3.18 mm (0.125 in.)
3.21 mm (0.126 in.)
3.24 mm (0.127 in.)
3.27 mm (0.129 in.)
(1)
(2)
(
3
)
(4)
(5)
0005295