TESTS, INSPECTIONS, AND ADJUSTMENTS - CONTINUED
EMS AIR SYSTEM CHECK - CONTINUED
Action alarm and light must operate at 60 psi (415 kPa).
Stop engine (TM 5-3800-205-10-1 or TM 5-3800-205-10-2).
If action alarm and/or light do not operate at correct pressure, check electrical connections for the following com-
If connections are good, replace pressure switch or switches (WP 0047 00).
AIR SYSTEM PRESSURE TEST
Tools and Special Tools.
Tool outfit, hydraulic systems (HSTRU) (Item 35, WP 0172 00).
Engine OFF (TM 5-3800-205-10-1 or TM 5-3800-205-10-2).
Battery disconnect switch in OFF position (TM 5-3800-205-10-1 or TM 5-3800-205-10-2).
Air System Pressure Test.
Always wear eye protection when draining air tanks. Failure to do so could result in injury.
Open three drain valves on air tanks to release air
pressure from air tanks.
Remove drain valve from one air tank.
Install bushing and hose assembly to air tank
where drain valve was removed.
Connect other end of hose to needle valve.
Connect 290 psi (2000 kPa) gage to valve.
Start engine (TM 5-3800-205-10-1 or TM 5-
3800-205-2) and allow air pressure to reach cut-
out pressure of 125 psi (860 kPa).
machine and test gage. The difference between
two gages should not be more than 15 psi (105
kPa). If this condition exists, replace air pressure