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 TM 55-1925-273-10-1
0067 00
CENTRAL HYDRAULIC SYSTEM
1.
Ensure power is available to hydraulic power unit control panel and main circuit breaker on control panel face
is closed.
2.
Check reservoir level and ensure it is at the proper operating level.
3.
Place mode selector switch in the "ON" position for local control or "REMOTE" for remote control from the
EOS.
4.
Select pump P1, P2 or both on pump selector switch. Simultaneous operation of both pumps is only required
when the central hydraulic system is cross connected to the towing winch hydraulic system. When cross con-
necting to the towing winch hydraulic system open valves TH-1, TH-2, TH-3 and TH-4 and close valves CH-
26 and CH-27.
5.
Press local or remote start button to start pump or pumps. When pump selector switch is set for both pumps,
there is a preset time delay to stagger pump start up.
NOTE: When operating both pumps simultaneously for extended periods of time, pay close attention to reservoir
temperature as this mode of operation may cause excessive oil temperatures.
6.
Once pump or pumps have started, observe local instrumentation to verify proper operation and observe return
filter pressure gauge, when it exceeds 20 PSIG with one pump running, the elements must be changed.
7.
To secure power unit, remove load from system and depress local or remote stop button.
Placard 2. Central Hydraulic System
0067 00-7
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