4-6
FIGURE 4-5. EXHAUST PIPING
EXS1175
SINGLE THIMBLE DIAMETER
12 INCHES (305 mm)
LARGER THAN EXHAUST LINE
HOLES IN END
INNER SLEEVE
EXHAUST LINE PASSING
THROUGH WALL OR PARTITION
IF EXHAUST LINE MUST BE PITCHED
UPWARD CONSTRUCT A TRAP OF PIPE
FITTINGS AT POINT OF RISE
AVOID SHARP BENDS
DRAIN CONDENSATION
TRAP PERIODICALLY
(228.60 mm)
9"
9"
FUEL TANK AND LINES
Fuel tanks risk explosion and fire,
which can cause severe personal injury or death.
Because fuel leaks create fire hazards, always use
flexible tubing between the engine and the fuel sup-
ply, to avoid leaks due to vibration and/or fuel line
failure. Do not allow the fuel line to contact rough,
sharp or hot surfaces.
Connect the fuel line to the fuel pump inlet as shown in
Figure 4-6 for either the DJB or DJE generator set.
Use an approved flexible fuel line next to the engine. Die-
sel engines require a fuel supply line and a separate fuel
return line. Install the fuel supply line from the supply
tank to the inverted flare male elbow mounted in the inlet
of the fuel pump. The pump is threaded 7/16-24 NPTF
(American Standard Internal Tapered Pipe Thread).
Install fuel return line from the 7/16-24 size opening in the
overflow fitting located on injection pump (where nozzle
fuel return line is also connected) to the top of the fuel
supply tank. Shield the line with fire-retardant material if
it passes through a combustible wall or partition.
FIGURE 4-6. FUEL LINE CONNECTIONS
DJE FUEL LINE CONNECTIONS
DJB FUEL LINE CONNECTIONS
NOZZLE
RETURN
LINES
(SHADED)
CONNECT FUEL
SUPPLY LINE HERE
CONNECT FUEL
RETURN LINE HERE
(FLEXIBLE LINE)
PUMP
FS1851C
FS1855C
NOZZLE
RETURN
LINES
(SHADED)
CONNECT FUEL
RETURN LINE HERE
(FLEXIBLE LINE)
PUMP
