TM 5-3825-226-24
HYDRAULIC PUMP
(3G7640)
Rotation is counterclockwise when seen from drive end.
Type of pump: Vane
For test, use SAE 10W oil at 150°F (65°C).
LARGE SECTION OF PUMP (Drive end) (Steering)
Test at Full Speed:
Output .............................. 23.0 U.S. gpm (87.1 litre/min)
at a pressure of .......... 100 psi (7.0 kg/cm2) (690 kPa)
with pump at ................................ .............. 2000 rpm
with engine at ................................ ............ 2000 rpm
Output .............................. 20.4 U.S. gpm (77.2 litre/min)
at a pressure of .... 1000 psi (70.0 kg/cm2) (6900 kPa)
with pump at ................................ .............. 2000 rpm
with engine at ................................ ............ 2000 rpm
Test at Half Speed:
Output .............................. 11.3 U.S. gpm (42.8 litre/min)
at a pressure of .......... 100 psi (7.0 kg/cm2) (690 kPa)
with pump at ................................ .............. 1000 rpm
with engine at ................................ ............ 1000 rpm
Output .............................. 10.0 U.S. gpm (37.9 litre/min)
at a pressure of .... 1000 psi (70.0 kg/cm2) (6900 kPa)
with pump at ................................ .............. 1000 rpm
with engine at ................................ ............ 1000 rpm
SMALL SECTION OF PUMP (Cover end) (Implement)
Test at Full Speed:
Output .............................. 23.7 U.S. gpm (89.7 litre/min)
at a pressure of .......... 100 psi (7.0 kg/cm2) (690 kPa)
with pump at ................................ .............. 2000 rpm
with engine at ................................ ............ 2000 rpm
Output .............................. 23.0 U.S. gpm (87.1 litre/min)
at a pressure of .... 1000 psi (70.0 kg/cm2) (6900 kPa)
with pump at ................................ .............. 2000 rpm
with engine at ................................ ............ 2000 rpm
Test at Half Speed:
Output .............................. 11.7 U.S. gpm (44.3 litre/min)
at a pressure of .......... 100 psi (7.0 kg/cm2) (690 kPa)
with pump at ................................ .............. 1000 rpm
with engine at ................................ ............ 1000 rpm
Output .............................. 10.8 U.S. gpm (40.9 litre/min)
at a pressure of .... 1000 psi (70.0 kg/cm2) (6900 kPa)
with pump at ................................ .............. 1000 rpm
with engine at ................................ ............ 1000 rpm
(1) Torque for four bolts ................ 45 ± 5 Ib.ft. (61 ± 7 N.m)
(2) Torque for four bolts ................ 70 ± 5 Ib.ft. (95 ± 7 N.m)
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