TM 5-6115-434-12 Table 3-3.  Troubleshooting Malfunction Probable cause Corrective action 6 Engine motors but a.  Low charged batteries a.  Check specific gravity of combustion does not electrolyte (para 2-1b(1) occur. (c)).  Recharge or replace batteries as indicated or utilize external power source (para 2-3b(4)). b.  Low or depleted fuel supply b.  Replenish fuel supply. c.  Fuel filters clogged c.  Check and replace fuel filters as indicated (para 3-17, 3-18, or 3-19). d.  Fuel control assembly failed d.  Replace failed fuel control assembly (para 3-24). e.  Fuel boost pump and motor e.  Replace failed fuel boost assembly failed. pump and motor assembly (para 3-21). f.  Fuel atomizer screen clogged f.  Clean screen (para 3-25b) or replace fuel atomizer assembly (para 3-25). g.  Fuel solenoid valve failed g.  Check for actuation of sole- noid valve (para 3-23c).  Re- place failed fuel solenoid valve (para 3-23). h.  Oil supply low h.  Check and replenish oil supply. i.  Oil pump pressure relief valve i.  Replace failed oil pump stuck open. pressure relief valve (para 3-31). j.  Oil pressure sequencing j.  Refer to para 3-46d for ad- switch improperly adjusted justment procedure.  Re- or failed. place failed oil pressure sequencing switch (para 3-46). k.  Turbine exhaust obstructed k.  Remove obstruction. l.  Ignition unit failed l.  See para 3-47 for ignition unit test.  Replace failed ignition unit (para 3-47). m.  Igniter plug or ignition m.  See para 3-48c for igniter lead assembly failed. plug test or para 3-49c for ignition lead assembly test.  Replace failed igniter plug (para 3-48) or igni- tion lead assembly (para 3- 49). n.  Other causes n.  Refer other causes to direct and general support main- tenance personnel. 7 Engine starts, accelerates a.  High fuel pump governor a.  Adjust governor setting to governed speed or setting. (para 3-8e(4) or replace less and shuts down. fuel control assembly (para 3-24). b.  Centrifugal multispeed b.  Refer to para 3-8e(6) for switch assembly overspeed adjustment procedure. (110 percent) switch set- Replace failed centrifugal ting low or failed. multi-speed switch assem- bly (para 3-45). 3-8