Install the two electrical wires from the actuator (4, Figure 6-5).
Install the two electrical wires to the shutoff valve assembly (18).
Pour a small amount of clean lubricating oil MIL-L-9000 in the fuel pump supply fitting on the gear pump
assembly (14) to provide initial lubrication and to prime the gear pump.
Install the fuel supply and discharge hoses (1 and 2, Figure 6-4) to the gear pump assembly (14, Figure 6-
5) and shutoff valve assembly (18), respectively.
6-10. FUEL PUMP REBUILD.
This paragraph contains disassembly, cleaning, inspection, repair, replacement, and reassembly
instructions. Test and calibration instructions for the fuel pump assembly are contained in paragraph 6-11.
Because of the precision fit and finish of the related components of the fuel pump assembly, it is essential
to avoid contamination by airborne dust or other contaminants.
The work area should be located as far as possible from grinding, painting, or other activities that could be
a source of airborne contaminants.
The workbench, tools, and equipment must be kept dean and free of oil or grease.
To ensure thorough cleaning, the fuel pump assembly must be completely disassembled during overhaul.
Place small parts together in trays to prevent loss.
Remove all traces of corrosion-preventive compound from new parts before installation in the assembly.
Clean all parts thoroughly before inspection and assembly using dean diesel fuel, regular grade DF2 W-F-
Compressed air used for cleaning or drying can create airborne particles that may enter the eyes.
Pressure shall not exceed 30 psi (207 kPa). Wearing of goggles Is required to avoid Injury to
Whenever possible, blow-dry parts with filtered, dry, compressed air.
Discard old gaskets and packings.
Torque all screws, bolts, or nuts in accordance with Table 1-1 and Table 1-2.
Inspect all parts for wear and correct clearances in accordance with Table 1-4.
Lubricate preformed packings and seals with petrolatum VV-P236.
Avoid excessive stretching of packings. Where a packing or seal must be installed over splined or
threaded shafts, use the correct assembly tool if available, or wrap the splines or threads with paper to
avoid cutting the packing or seal.
The inspection area must be thoroughly dean. Use a bright light and magnification when possible.
Visually inspect all parts for corrosion, pitting, nicks, cracks, deformation caused by excessive wear, or any
other damage that may impair efficient operation of the unit. Inspect all splined and threaded parts for
damage. Replace all parts that do not pass inspection or that cannot be repaired as specified.
The instructions that follow cover the rebuilding of the fuel pump as subassemblies. Disassemble the fuel
pump in accordance with paragraph 6-9, and rebuild the subassemblies in accordance with steps b through
f, below. Test and calibrate there built fuel pump in accordance with paragraph 6-11.