TM 5-3805-260-24
FUEL TRANSFER PUMP
(1)
Bypass valve.
Fuel pressure at FULL LOAD .......305 psi 1205 35 kPa)
(2)
4N605 Spring for bypass valve-
Length under test force ................. ............880 in (22.35 mm)
Test force ....................................3 53 .....18 lb (15 3 0 80 N)
Free length after test .................... ............1 729 in (43 92 mm)
Outside diameter............................ ...........527 in(13 39 mm)
(3)
Thickness of gears
(new)
....................................3736 0003 in (9 489 0 008 mm)
Depth of counterbore
(new)
..................................3750 0005 in (9 525 0 013 mm)
(4)
Diameter of shaft for
Idler gear
....................................4914 0003 in (12482 0 008 mm)
Bore in idler gear ..........................4926 0003 in (12 512 008 mm)
(5)
Put a thin layer of 5S1454 Sealing Compound on the outside
diameter of the seals before installation Remove the extra sealing
compound after assembly.
(6)
Install inner seal from outside edge of body assembly
a distance of .................................453 .010 in (11 51 0.25 mm)
(7)
Install outside seal from outside edge of body
assembly to a distance of .............030 .010 in (0.76 0 25 mm)
INJECTION NOZZLE
(9N3979)
Bench test nozzles using clean SAE J967
Calibration Oil (Kent-Moore Corp J-26400
or Viscor Calibration Fluid 1487C-SAE J-967C)
at a temperature of ....... ............65 to 70 F (18 to 20 C)
Nozzle setting pressures (valve lift adjustment screw turned 3/4 +
1/8 turn from closed position)
Used nozzle .......... ............1500 to 2600 psi (10300 to 17690 kPa)
Used, adjusted
nozzle .................... ............2400 to 2600 psi (16545 to 17690 kPa)
Return oil leakage test
pressure ....................... ............1400 to 1600 psi (9630 to 11 045 kPa)
Leakage in 15 seconds ............NO minimum or maximum
Maximum tip leakage Is 20 drops in 15 seconds with a pressure of 200
psi (1380 kPa) less than opening pressure
(1)
Torque for valve lift
locknut ................... ............35 to 45 lb in (4.0 to 5.1 N-m)
(2)
Torque for pressure screw
locknut .................. ............70 to 80 lb In (8.0 to 9.1 N-m)
(3)
Torque for cap ......110 to 120 lb in (12.4 to 13.6 Nm)
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