FUEL INJECTOR NOZZLES (Cont'd) Checking
IMPORTANT Do not disassemble or test the fuel injector nozzles unless you have the correct service and testing tools. 1-2027-0284 A-2513
The tools listed will be needed to do the following procedure: MEL-10018 - Injector Nozzle Tester MEL-10019 - Accessory Set Connect the nozzle to a test pump, in a down position @. Operate the test pump until the nozzle valve opens: SETTING PRESSURE - 2205 PSI (15203 kPa) WORKING PRESSURE - 1985 PSI (13687 kPa) If the pressure is not correct, replace or clean the nozzle. Check for inside leakage:
A-2621
Operate the test pump to almost opening pressure. Record pressure and check pressure decrease for six seconds. The nozzle has a defect if the pressure deceases more than 740 PS I (5163 kPa) .
.A
WARNING
Do not test fuel injector nozzles unless you have correct service and testing tools. Keep away from fuel coming from the nozzles. Wear safety goggles. Fuel under pressure can penetrate skin or eyes and cause serious injury. If fuel enters skin or eyes, get immediate medical attention . W-2075-1285
Checking nozzle spray pattern [ID: Does not come out the side of nozzle. Does not have drops coming from nozzle. Does not have a solid stream coming from the nozzle. Any of the above conditions show a defect or dirty injector nozzle. Clean or replace any nozzle that does not operate correctly.
-7A-12-
843 Loader Service Manual
