TM-9-2320-428-10
TRUCK, CARGO, 8X8, M977
TECHNICAL MANUAL; OPERATOR'S MANUAL
JUNE 2009
TM-9-2320-428-10 - Page 126 of 1072
MAIN HYDRAULIC SYSTEM - Continued
The main hydraulic system includes the material handling crane (5) on the HEMTT series
vehicle.
The fuel pump on the M978 tanker is part of the main hydraulic system.
FLUID SYSTEM
Pump (1) mounted on the rear of engine provides the fluid power to operate the power
steering (2) only.
2
1
6
7
5
4
3
Figure 2.
Fluid power for the self-recovery winch (3), crane (4), and fuel tanker dispensing
components (M978 only) is provided by a hydraulic pump (5) driven by the power take-off
(PTO) mounted on the transmission.
A manually-operated selector valve (6) is used to activate either the self-recovery winch (3),
crane (4), fuel tanker dispensing components (M978 only), or load handling system (LHS)
on M1120 LHS and M1977 CBT.
Both pumps (1) and (5) share the same reservoir (7).
END OF WORK PACKAGE
TM 9-2320-428-10
0010
0010-2
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