TM 5-3805-260-24
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/mn)
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 lb.ft. (61 7 N m)
(2) Torque for four bolts ..... 70 5 Ib.ft. (95 7 N m)
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