TM 5-3805-262-203-5. FUEL SYSTEM TROUBLESHOOTING (CONT)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION1. LOW FUEL PRESSURE (Cont).S t e p 1 . ( C o n t ) .Put two hose clamps on ends of 1/4 inch inside diameter hose.Connect hose between barb hose connectors installed in filter headand fuel injection pump feed pump. Do this by pushing end of hosefirmly onto barb hose connector.Position hose clamps over each end of hose attached to barb hoseconnector and tighten.I n s t a l l z e r o t o 5 0 p s i p r e s s u r e g a g e i n t e e i n s t a l l e d i n f u e l i n j e c-tion pump feed pump port.Bleed air from fuel system (page 4-40).If air cannot be bled from fuelvalves with ignition key switchNOTEs y s t e m ( f u e l d o e s n o ton) go to step 5 below.Tell assistant to crank engine for 30 secondssure gage.Pressure gage should indicate 20 to 30 psi.a .b .f l o w f r o m b l e edwhile you watch pres-If pressure gage indicates 20 to 30 psi, there is a blockage inf u e l f i l t e r s , f i l t e r h e ad , or filter hose, connected between fil-ter head and fuel injection pump.Go to step 2 below.If pressure gage does not indicate 20 to 30 psi, go to step 5below.Step 2. Loosen clamps and disconnect hose from barb fittings installed infilter head and fuel injection pump feed pump.Disconnect pressure gage from tee.R e m o v e b a r b h o s e c o n n e c t o r s a n d t e e i n s t a l l e d i n f i l t e r h e a d a ndfuel injection pump feed pump.R e i n s t a l l e l b o w s i n f i l t e r h e a d a n d f u e l i n j e c t i o n p u m p f e e d p u m p . Compressed air used for cleaning purposes will not exceed 30 psi. Useo n l y w i t h e f f e c t i v e c h i p g u a r d i n g a n d p e r s o n a l p r o t e c t i v e e q u i p m e n t( g o g g l e s / s h i e l d , g l o v e s , e t c ) . F a i l u r e t o d o s o c o u l d c a u s e s e r i o u si n j u r y t o e y e s a n d p o s s i b l e b l i n d n e s s.If you hurt your eyes or if aforeign object is blown into your eyes, seek medical attention immedi-a t e l y .3-43
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