Quantcast Test -- Continued - TM-9-2815-247-34_215

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TM 9--2815--247--34 0036 00--6 FUEL INJECTOR NOZZLE AND HOLDER REPAIR -- CONTINUED 0036 00 Test -- Continued c.   If spray pattern is not acceptable, disassemble, clean and flush each nozzle hole thoroughly. Reassemble and repeat test. d.   If spray pattern is still not acceptable, and does not improve with continued operation of the tester, replace nozzle tip. Perform this work package and repeat test. 8.   Check nozzle seat leakage. a.   Disconnect metal tube assembly (14) from lower connector (15) and move to upper connector (20). b.   Dry the nozzle tip with a cloth. c.   Open pressure gauge valve (17) and actuate tester slowly to build up pressure to 300 psi (20685 kPa) below the valve opening pressure and hold for five (5) seconds. d.   If drops of fuel form at spray orifices, or if fuel issues as a stream at 300 psi (2068.5 kPa) below the valve opening pressure, close the pressure gauge valve (17) and actuate the pump handle (18) rapidly eight to ten times. Repeat steps 8b and 8c. If drops form or fuel issues as a stream, the nozzle and holder (3) is leaking and must be replaced. Perform this work package and repeat test. 9.   After successful testing, remove the nozzle and holder from test stand and install protective caps and plugs. 3 18 17


 


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