47
[Informative: Fuel injection valve structure]
(b) Spray pattern inspection
After adjustment to the specified valve opening pressure, use a nozzle tester and check the spray pattern
and seat oil-tightness.
Seat oil tightness check
After injecting a few times, increase the pressure gradually. Hold the pressure for about 5 seconds
at a little before the valve opening pressure of 1.96 Mpa(20kgf/cm
2
), and check to see that oil does not
drip from the tip end of the nozzle.
If extreme oil leak from the overflow joint exists during injection by the nozzle tester, check after
retightening. If much oil is leaking, replace the nozzle assembly.
To Next Page