TM 9--2350--292--20--10177 00--3LOW BRAKE PRESSURE WARNING LIGHT COMES ON AND WARNINGHORN SOUNDS -- CONTINUED0177 00FAre all hoses and fittings free of damage and leaks?CONTINUED FROM STEP AnoyesCONTINUED ON NEXT PAGECheck brake system for damage or leaking hosesand fittings (WP 0355 00 through WP 0384 00).Repair or replace damagedor leaking hoses and fit-tings (WP 0355 00 throughWP 0384 00). Verify faultis corrected.GDid brake pressure gauge read 500 psi (old configuration) or550 psi (new configuration with brake modulation) or greater?noyes1. Disconnect hose from port P of brake modulatingvalve (WP 0360 00 or WP 0361 00 or WP0362 00). Plug hose.2. Disconnect hose from port T of brake modulatingvalve (WP 0360 00 or WP 0361 00 or WP0362 00). Plug hose.3. Turn vehicle MASTER switch ON(TM 9--2350--292--10).4. Read brake pressure gauge on power boostmanifold.5. Turn vehicle MASTER switch OFF(TM 9--2350--292--10).Replace brake modulatingvalve (WP 0376 00 or WP0377 00). Verify fault iscorrected.WARNING
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