International Harvester Company TD-24 Operator's Manual page 73

MAINTENANCE
DIESEL FUEL SYSTEM - Continued
tact the sleeve. From that point appiy 1/6
turn to 1/3 turn with the wrench.
,
9. Lubricate the pump as specified in
the
"LUBRICATION GUIDE" on pages
~2
and
~3.
10. Connect the "coil-to-distributor"
cable to the ignition coil. Pull the compres-
sion release rod out to the gasoline starting
position.
11. Start the engine on gasoline and
vent the air from the entire fuel system
(refer to "VENTING AIR FROM THE FUEL
SYSTEM" following.)
12. Convert to the diesel cycle and
note engine operation. ITthe engine oper-
ates unevenly, check and adjust timing (refer
to "TIMING THE FUEL INJECTION PUMP"
following).
Timing the Fuel Injection Pump
The timing of the fuel injection pump
can be adjusted by slots in the pump driving
gear where it is bolted to the gear hub, the
hub being keyed to the pump shaft.
The adjustment is normally set with the
timing indicator on the center mark of the
graduations on the pump gear. To be sure
of the best operating conditions, the indicator
can be tried on either side of the center
mark and set at the best operating position.
To change the location of .the indicator,
loosen the 3 cap screws "C" (Illust. 66)
which secure the indicator and gear to the
gear hub. Turn the gear hub until the indi-
cator is at the desired position; then tighten
, the cap screws.
To advance the time of fuel injection,
turn the gear hub clockwise. To retard the
injection, turn the hub counterclockwise.
The correct adjustment is obtained when
the engine speed is maximum for a fixed
load and engine operation is smooth with a
clean exhaust.
Venting Air From the Fuel System
If the fuel filters have been drained, if
the fuel pipes have been disconnected, or if
air has entered the system for any reason, it
will be necessary to vent the system before
the engine will operate properly on the diesel
cycle. To remove the air it is necessary to
vent the system by opening the vents on the
fuel filters, as follows:
1. Be sure the shut-off valve under the
operator's seat is open and that there is a
supply of fuel in the tank.
2. Open the vent "A"
(Ll.luet.,
69) on
the auxiliary fuel filter. When fuel flows from
the vent free froin air, close the vent.
3. Start the engine. With the engine
operating on gasoline, advance the engine
speed control lever slightly (do not move the
compression release rod); open the vent
"B" at the top of the final fuel filter. When
fuel flows from the vent free from air, close
the vent.
4. Advance the engine speed control
lever until white smoke appears in the ex-
haust. Switch to diesel cycle and work the
engine speed control lever back and forth
until the air is removed from the injection
lines and nozzles.
111ust. 69
Venting air from the diesel fuel system.
71