Operating instructions

4.7.3 Fuel Pump
The fuel pump MUST be mounted in a horizontal position in order to function correctly and deliver
the proper quantity of fuel.
Mount the fuel pump as close to the fuel source as practicable.
Do not mount fuel pump near heat sources (exhaust pipes, hot coolant lines, etc.)
Pay particular attention to the fuel line and pump limitations as covered in sections 4.7.2. and 4.7.3.
Fig. 405: Fuel Pump Mounting (DP 30)
4.7.4 Fuel Standpipe
The fuel is drawn from the vehicles fuel tank through a fuel standpipe. This standpipe can be utilized
on vehicles with a spare threaded port, or if no threaded port is available, a 1" hole can be drilled into
the tank and the universal tank boss installed as shown in figure 407. Keep the fuel standpipe 2"
from the bottom of fuel tank.
Fuel standpipe installation:
1. Cut or extend fuel standpipe to length, approx. 2" off fuel tank bottom. Angle the cut to prevent
clogging. Remove burrs from cut end.
2. Install the universal fuel standpipe
- use 1/4" or 1/2" spare port on fuel tank (if available) and install fuel standpipe
or
- drill 1" hole on top of tank (assemble tank-boss and fuel standpipe) and install assembled
universal fuel standpipe
3. Connect fuel line from fuel metering pump to fuel standpipe using rubber connectors and clamps.
4. Route and secure fuel line from heater to fuel tank.
416
4 Installation Thermo Top C (TTC)
NOTE:
Fuel standpipe with universal tank boss can be installed from outside of tank. First assemble fuel
standpipe and tank-boss and then insert at an angle through the 1f hole previously drilled into tank.
Tighten down with nut provided. Do not over-tighten.