TM-5-2350-378-23-P
ARMORED COMBAT EARTHMOVER (ACE), M9; HYDRAULIC DIAGNOSTIC CENTER
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JUNE 2012
TM-5-2350-378-23-P - Page 51 of 644
Direction Control Valve (DCV) Bank
The control valve bank (Figure 2) is located beneath the hydraulic high-pressure filters (Figure 2). The control valves
in the valve bank are activated by mechanical linkages from the operator's compartment and they, in turn, activate
the hydraulic functions of the vehicle.
Hydraulic Manifolds
Located in the hull, the manifolds (Figure 2) route the flow of hydraulic fluid to the vehicle components.
Compensating Hydraulic Pump
Located on the front of the transfer case, the pump (Figure 2) provides pressure at a constant 2,800-2,900 psi
(19,306-19,996
kPa) to the SPRUNG/UNSPRUNG hydraulic operation. Capacity of this variable displacement pump
is 10 gpm (38 Lpm).
Main Hydraulic Pump
A fixed displacement pump is mounted on the rear of the transfer case. The pump pulls fluid from the hydraulic
reservoir and circulates it through the hydraulic filters at 13 gpm (49 Lpm), then splits the pressure at the DCVs to
provide pressure to both left and right suspension controls. (Figure 2)
HYDRAULIC
RESERVOIR
HYDRAULIC HIGH-PRESSURE
FILTERS
DIRECTIONAL
CONTROL
VALVE BANK
HYDRAULIC
MANIFOLD
MAIN
HYDRAULIC
PUMP
COMPENSATING
HYDRAULIC
PUMP
T0004HDC
Figure 2.
Bowl Area Major Components.
TM 5-2350-378-23&P
0003
0003-3
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