TM-9-2815-200-35

ENGINE, WITH CONTAINER:TURBOSUPERCHARGED, DIESEL ,FUEL INJECTION ,90-DEGREE “V” TYPE, AIR - COOLED ,12 - CYLINDER , ASSEMBLY ;MODELS AVDS-1790-2M (2815-856-4996), AVDS-1790-2A AND AVDS-1790-2AM (2815-856-9005)

TECHNICAL MANUAL; DIRECT SUPPORT, GENERAL SUPPORT AND DEPOT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LISTS

TM-9-2815-200-35 - Page 163 of 779

Figure 4-166.

4-17. Removal and Testing

a.

General.

The fuel injector nozzle and holder

assemblies are generally removed while

troubleshooting the fuel system, particularly

when a fuel injection pump has failed. The

nozzles should be tested on a nozzle tester for

opening pressure, spray pattern, leakage and

nozzle chatter before reinstalling in engine.

Check the nozzle retaining spring to dimensions

shown in figure 4-166, as springs that have been

installed over a period of time tend to take a

permanent “set”. The nozzles are to be replaced

100% at time of overhaul. Nozzle pressure

adjusting shims are furnished in shim set FSN

4-81