TM 5-3805-262-203-19. AIR BRAKE SYSTEM TROUBLESHOOTING (CONT)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION5. AIR PRESSURE WILL NOT BUILD UP TO NORMAL (Cont).Step 3.Open drain valve on air reservoir and drain air.Disconnect wire lead from pressure sender terminal and remove pres-sure sender.I n s t a l l a n a c c u r a t e , c a l i b r a t e d , a i r p r e s s u r e g a g e i n f i t t i n g f r omwhich pressure sender was removed.Close drain valve on air reservoir.Start engine and allow air system to build up air pressure.Compare reading on AIR PRESS gage with reading on calibrated testgage.a. If AIR PRESS gage indicates in lower fourth of green area withtest gage indicating 115 psi5 - 3 9 )., replace AIR PRESS gage (pageb. If AIR PRESSing 90 to 953-129).6. AIR PRESSURE TOO HIGH OR AIRgage indicates in red area with test gage indicat-psi, go to MALFUNCTION 4, step 3 above (pageCOMPRESSOR WILL NOT CUT OUT.Check governor adjustment (page 7-100).If governor is out of adjustment, adjust (page 7-100).If governor cannot be adjusted, replace it (page 7-98).7. AIR COMPRESSOR FAILS TO MAINTAIN SUFFICIENT AIR PRESSURE.Step 1. Check that air reservoir drain valve is closed tightly.a . C l o s e d r a i n v a l v e t i g h t l y.b. If drain valve is closed tightly, go to step 2 below .3-132
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business