Thermo King SB-III 30 SR+, Manual

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Engine Maintenance (Rev. 04/02)
38
NOTE: The injection nozzles should be tested (and
repaired if necessary) at 10,000 hour intervals when used
in normal conditions. Normal conditions are considered to
be the use of clean high quality fuel, no used oil blending,
and regular maintenance of the fuel system according to
the Maintenance Inspection Schedule. Refer to the TK 482
and TK 486 Overhaul Manual TK 50136 for injection noz-
zle testing and repair procedures.
Whenever the fuel system is opened, take the following pre-
cautions to prevent dirt from entering the system:
1. Cap all fuel lines.
2. Work in a relatively clean area whenever possible.
3. Complete the work in the shortest possible time.
Any major injection pump or nozzle repairs should be done
by a quality diesel injection service shop. The necessary ser-
vice equipment and facilities are not found in most engine
rebuild shops because of the large investment required.
The following procedures can be done under field condi-
tions:
1. Bleeding air from the fuel system.
2. Fuel tank and filter system maintenance.
3. Priming pump (hand) replacement or repair.
4. Fuel pump replacement or repair.
5. Injection line replacement.
6. Injection pump and governor adjustments.
7. Injection pump timing.
8. Nozzle spray pattern testing and adjustment.
9. Minor rebuilding of nozzles.
Bleeding the Fuel System
If the engine runs out of fuel, repairs are made to the fuel
system, or if air gets into the system for any other reason,
the air must be bled out of the fuel system.
NOTE: MAKE SURE the fuel tank vent is kept open. If
the vent becomes clogged, a partial vacuum develops in
the tank, and this increases the tendency for air to enter
the system.
To bleed air from the fuel system:
1. Loosen the bleed screw in the inlet fitting on the injec-
tion pump
2. Unscrew the priming pump handle and manually prime
the fuel system until air bubbles are no longer visible in
the fuel coming out of the bleed screw.
3. Tighten the bleed screw and screw the priming pump
handle back in.
4. Loosen the injection lines at the injection nozzles.
5. Crank the engine until fuel appears at the nozzles.
6. Tighten the injection lines.
1. Vent
2. Drain Plug
Fuel Tank
1
aea751
2