ENGINE FUEL 6C - 19
5. Secure the dial gauge to the nozzle holder using the
nut so that the pin contacts the tip of the first spring
seat.
CAUTION:
• Secure the dial gauge so that a stroke of 2 mm can
be measured.
• Do not over-tighten the nut as the dial gauge shaft
may jam. (Confirm from the dial gauge that the
shaft moves smoothly.)
6. Set the nozzle holder to the nozzle tester and put
needle to zero on the dial gauge.
7. Operate the nozzle tester to bleed any air from inside
the retaining nut and to confirm that no fuel leaks.
8. Operate the nozzle tester and increase the in-line
pressure to 34.3 - 44.1 MPa (350 - 450 kg/cm
2
) so that
the nozzle’s needle valve moves through its full lift.
Record full lift ‘L’. (Read dial gauge)
Note:
The above operation is used to determine whether
the nozzle seat is worn and whether the nozzle
assembly is in good condition.
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