TM 5-3805-255-14
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HYDRAULIC AND FLUID SYSTEMS
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Reservoir
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Type: Closed system with controlled pressure and vacuum relief.
Construction: Cylindrical shape with 0.125 in. (3.17 mm) wall thickness, 19.75 in. (501.6 mm) diameter x 34.75 in.
(882.6 mm) high and removable cover.
Vacuum valve setting, 2.3 psi (15.8 kPa)
Pressure relief valve setting, 30 psi (206.8 kPa)
Relief valve spring, correct adjusted length, 3 in. (7.62 cm).
Pressure required to deflect relief valve spring 0.10 in. 6.7 lb.
Filters: Four replaceable, pleated paper, radial fin type elements rated at 5 microns each.
Burst pressure, 100 psi minimum.
Flow rate, inside out, 60 gpm (227.1 L/M) at 15 psi (103.4 kPa) with SAE 10 oil at 100F (37.7 C).
Strainers #6 square mesh wire cloth.
Capacity, "H" mark on dipstick = 35 gal. (132.4 L), reservoir only.
Pumps
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Type:
Main pump: vane, double element, positive displacement.
Steering pump: vane, single element, positive displacement.
Rotation: Counterclockwise as viewed from shaft end.
Pump capacity: (1,200 RPM, 100 psi)
Main pump:
Small element, 21 gpm (79.4 L/M).
Large element, 38 gpm (143.8 L/M).
Steering pump: 25 gpm (94.6 L/M).
Main Control Valve
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Type:
Two spool, balanced spool design with integral pilot operated relief valve.
Relief valve setting:
Main relief: 2300 50 psi (15,857.9 344.7 kPa) at full throttle.
Cylinder relief: 3000 50 psi (20,684.2 344.7 kPa) at full throttle.
Rating:
102 gpm (386.1 L/M) at velocity of 22 ft/sec.
Steering Valve
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Type:
Plunger operated.
Circuit pressures: Refer to System Pressures.
Demand Valve
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Type:
Pressure operated, non-adjustable.
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