TM-9-2510-247-13-P
FIFTH WHEEL TOWING DEVICE MODEL 250M
TECHNICAL MANUAL; OPERATOR’S, UNIT, AND DIRECT SUPPORT MAINTENANCE MANUAL, REPAIR PARTS AND SPECIAL TOOLS LIST
JULY 2004
TM-9-2510-247-13-P - Page 52 of 522
TM 9-2510-247-13&P
0004 00
HYDRAULIC SYSTEM CONTROLS AND INDICATORS - Continued
Figure 12.
Hydraulic Valves and
Gauges
KEY
CONTROL OR INDICATOR
FUNCTION
5
Top Hydraulic Relief Valve
Provides remote point for air to be drained from
reservoirs.
6
Pressure Gauge
Provides ability to monitor hydraulic fluid
pressure. Must maintain back pressure of 300
to 800 psi when the boom or mast is operated
with no load.
7
Hydraulic Flow Valves
Provides ability to adjust hydraulic back
pressure (WP 0003).
8
Hydraulic Safety Valves
Control hydraulic pressure and contain hydraulic
flow valves to allow for adjustment of back
pressure.
0004 00-2
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