Yanmar 6LPA-STP2 Service Manual page 198

FUEL SYSTEM
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
6-22
(D)
(L4)
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(t)
(E)
(L5)
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© 2007 Yanmar Marine International
Thickness of No. 2
Pressure Spring Seat (t)
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.)
Figure 6-35
(2)
(1)
Figure 6-35
1 – Nozzle
2 – (E)
3 – Pre-lift
4 – Needle lift
5 – Detailed View of (E)
6LPA Service Manual
Fuel Injection Nozzle
(3)
(4)
(5)
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