POWER TRAIN
SPEClFlCATlONS
TM 5-3805-263-14&P-2
TRANSMlSSlON OIL PUMP
3P891
Rotation is clockwise when seen from driven end.
Bench test using SAE 10W oil at 120° F (49° C),
(1) Section for scavenge
(minimum output). . . . . . . . . . . . . . . . . 34.5 U.S. gpm (132 liter/min)
with pump at . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1800 rpm
at a pressure of . . . . . . . . . . . . . . . . . . . . . 50 psi (345 kPa)
(2)
Section for the transmission (minimum
output) . . . . . . . . . . . . . . . . . . . 188 U.S gpm (73 liter/min)
with pump at . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1600 rpm
at a pressure of . . . . . . . . . . . . . . . . . . . . . . .
350 psi (2415 kPa)
(3) Length of gears
(new). . . . . . . . . . . . . . . . .9998 ± .0005 in. (25.395 ± 0.013 mm)
Depth of bores for gears
(new). . . . . . . . . . . . . . 1.0030 ± .0008 in. (25.476 ± 0.020 mm)
(4) Length of gears
(new). . . . . . . . . . . . . . .8750 ± .0003 in. (22.225 ± 0.008 mm)
Depth of bores for gears
(new). . . . . . . . . . . . . . . . . .8777 ± .0005 in. (22.294 ± 0.013 mm)
(5) Diameter of shaft
(new). . . . . . . . . . . . . . . 1.2497 ± .0002 in. (31.742 ± 0.005 mm)
Bore in bearing
(new). . . . . . . . . . . . . . . 1.2514 ± .0003 in. (31.786 ± 0.008 mm)
(6) Diameter of shaft
(new). . . . . . . . . . . . . 1.2497 ± .0002 in. (31.742 ± 0.005 mm)
Bore in bearing
(new). . . . . . . . . . . . . . 1.2514 ± .0003 in. (31.786 ± 0.008 mm)
TRANSMISSION
OIL FILTER
6P2091
CAUTION
Do not use air wrench to tighten housing assembly.
Difference in pressure at which the
bypass valve will open. . . . . . . . . . . . . . . . 36 ± 3 psi (248 ± 21 kPa)
(1)
9M1986 Spring for the bypass valve:
Length under test force . . . . . . . . . . . . . . . . . 1.00 in. (25.4 mm)
Testforce . . . . . . . . . . . . . . . . . . . . . . . 24.9 ± 2.0 lb. (111 ± 9 N)
Free length after test . . . . . . . . . . . . . . 1.86 in. (47.2 mm)
Outside diameter. . . . . . . . . . . . . . . . . . 50 in. (12.7 mm)
(2)
3S8852 Spring for the filter element:
Length under test force . . . . . . . . . 1.00 in. (25.4 mm)
Test force . . . . . . . . . . . . . . . . . . 31.6 to 37.2 lb. (141 to 166 N)
Free length after test . . . . . . . . . . . . . . . 3.80 in (96.5 mm)
Outside diameter. . . . . . . . . . . . . . . . . . . . 1.38 in. (35.1 mm)
2-127
