SERVICE & MAINTENANCE Cont.
25
Purging the Diesel Fuel System (con’t.)
Figure 28
Connect Jumper Wire to Alternator & Solenoid
3. Clip one end of a jumper wire to the EXC terminal on the back of the alternator as shown in Figures 28 & 29
(this terminal will have a green wire connected to it).
Figure 29
Terminal Locations
4. Clip the other end of the jumper wire to the “I” terminal on the starter solenoid (See Figs. 28 & 29).
Connect To
“EXC” Terminal
“I” Terminal On The
Starter Solenoid
“EXC” Terminal
On The
Alternator
Connect Jumper Wire
To “I”Terminal
5. Open the bleeder port located on top of the fuel injec-
tor (See Fig. 30).
Figure 30
Bleeder Port Location
Bleeder
Port
6. T urn the ignition key to the “ON” position (the fuel
pump will begin to pump).
When the fuel pump is pumping fuel only, the “thump-
ing” sound will become more of a “purring” sound,
when this occurs tighten the bleeder port.
T urn the ignition key to the “OFF” position, remove the
jumper wire and reconnect the white w/red wire onto
the starter coil.
PURGING FUEL SYSTEM WITHOUT THE USE OF A JUMPER WIRE
Fuel system bleed may be accomplished using the glow plug timer if no jumper wire is available.
The fuel pump will energize for approximately 20 seconds during start-up from the glow plug pre-heat timer.
T urn the ignition key to the “ON” position. The fuel pump will be activated for about 20 seconds until the glow plug
timer stops.
1. Open the bleeder port on top of the fuel injector (See Fig. 30).
When the timer stops, turn the key to the “Off” position then turn it back to the “ON” position, the fuel pump will run
again for approximately 20 seconds, when the glow plug timer stops, turn the key off again. Continue with this
procedure until the system is purged. When the fuel pump is pumping fuel only, the “thumping” sound will be
more of a “purring” sound, when this occurs, tighten the bleeder port.
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