FU-10 FUEL SYSTEM - Injection Nozzles (1 PZ and 1 HZ)
3. REMOVE NOZZLE LEAKAGE PIPE
(a) Disconnect the fuel hose from the nozzle leakage pipe.
(b) Remove the nuts, leakage pipe and gaskets.
4. REMOVE INJECTION NOZZLES
Using SST, remove the injection nozzles, seats and gaskets.
SST 09268-64010
HINT: Arrange the injection nozzles in correct order.
TEST OF INJECTION NOZZLES
1. INJECTION PRESSURE TEST
(a) Install the injection nozzle to the injection nozzle hand
tester and bleed air from the union nut.
CAUTION: Do not place your finger over the nozzle
injection hole.
(b) Pump the tester handle a few times as fast as possible
to discharge the carbon from the injection hole.
(c) Pump the tester handle slowly and observe the pres-
sure gauge.
(d) Read the pressure gauge just as the injection pressure
begins to drop.
Opening pressure:
New nozzle 145 -155 kg/cm
2
(2,062-2,205 psi)
(14,220-15,200 kPa)
Reused nozzle 135- 155 kg/cm
2
(1,920-2,205 psi)
(13,239-15,200 kPa)
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