TM 5-3805-291-23-1
SECONDARY FUEL FILTER AND BASE REPLACEMENT - CONTINUED
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CLEANING AND INSPECTION
WARN I N G
Solvent cleaning compound MIL-PRF-680 Type III is an environmentally compliant and low-toxic
material. However, it may be irritating to the eyes and skin. Use protective gloves and goggles. Use in
well-ventilated areas. Keep away from open flames and other sources of ignition. Failure to do so may
result in injury or death to personnel.
Particles blown by compressed air are hazardous. DO NOT exceed 15 psi (103 kPa) nozzle pressure
when drying parts with compressed air. DO NOT direct compressed air against human skin. Make
sure air stream is directed away from user and other personnel in the area. To prevent injury, user
must wear protective goggles or face shield. Failure to follow this warning may result in injury to per-
sonnel.
1.
Clean all parts and surfaces with solvent cleaning compound.
2.
Dry parts with compressed air.
3.
Inspect all parts for damage, wear, pitting, cracks, or corrosion and replace if necessary.
N OT E
Apply a thin coat of clean fuel to all O-rings prior to installation.
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FUEL SWITCH AND SENSORS INSTALLATION
1.
Install new O-ring (26) and fuel temperature sensor (25).
2.
Install two new O-rings (24), adapter (23), and fuel pressure sensor (22).
3.
Install new O-ring (21) and fuel filter pressure differential switch (20).
INSTALLATION
1.
Install four new O-rings (19) and fittings (18).
2.
Install two new O-rings (17), fitting (16), and plug (15).
3.
Install new O-ring (14) and fitting (12).
4.
Install new O-ring (13), connect hose (11) to fitting (12), and tighten clamp (10).
5.
Position secondary fuel filter base (3) on machine and secure with two washers (9) and bolts (8).
CAU T I ON
Do not fill fuel filters with fuel before installing. The fuel will not be filtered and could be contaminated.
Contaminated fuel will cause accelerated wear to fuel system parts. The fuel system should be primed prior
to starting the engine.
N OT E
The fuel filter has rotation marks spaced at 90 degrees (1/4 turn). Follow instructions printed on filter (or
supplied with non-OEM filter) for tightening procedure. Strap wrench (or equivalent) may be necessary to
tighten filter to specification. Take care that tool does not damage new filter.
6.
Lubricate seal of new secondary fuel filter (2) with clean diesel fuel and install on secondary fuel filter base (3).
7.
Install four new O-rings (7) in hose assemblies (6).
8.
Connect four hose assemblies (6) to secondary fuel filter base (3).
9.
Connect wiring harnesses (5 and 4) to secondary fuel filter base (3).
10.
Ensure knob (1) is in CLOSED position.
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