![background image](http://html1.mh-extra.com/html/thermo-king/914970/914970_manual_1104406098.webp)
Engine Maintenance
98
7. Mix one gallon of the appropriate permanent
type antifreeze concentrate and one gallon
clean water in a container to make a 50/50
mixture. (Do not add antifreeze and then add
water to the unit. This procedure may not give
a true 50/50 mixture because the exact cooling
system capacity may not always be known.)
8. Refill the radiator with the 50/50 mixture.
Bleeding Cooling System
After filling the radiator, run the unit up to
operating temperature to check for overheating
and coolant level and allow the air to be purged
for a few minutes.
After the engine has cooled, check coolant level
and add as necessary.
Engine Thermostat
For the best engine operation, use a 180 F (82 C)
thermostat year around.
Engine Fuel System
The fuel system used on the TK 3.95 diesel engine
is a high pressure system used in conjunction with
a prechamber.
The components of the fuel system are:
•
Fuel Tank (may be the truck fuel tank)
•
Electric Fuel Pump
•
Fuel Filter
•
Injection Pump
•
Injection Nozzles.
A 9.4 to 11.5 psi (66 to 79 kPa) electric fuel pump
pulls fuel from the fuel tank and then pushes it
through the fuel filter to the injection pump.
The injection pump plungers are activated by a
gear driven injection pump camshaft. The
governor sleeve and weight assembly is mounted
on the end of the injection pump camshaft. The
governor’s speed requirements are relayed to the
injection pump through a linkage arrangement
located in the rear cover. The injection pump
raises the pressure of the fuel and meters the
correct amount of fuel to the nozzle at the correct
time. The increased fuel pressure will lift the
spring loaded nozzle to admit fuel into the
combustion chamber.
The fuel system is relatively trouble free and if
properly maintained will usually not require major
service repairs between engine overhauls.
The most common cause of fuel system problems
is contamination. It cannot be stressed enough that
the fuel must be clean, fuel tanks must be free
from contaminants, and the fuel filter must be
changed regularly. Any time that the fuel system
is opened up, all possible precautions must be
taken to keep dirt from entering the system. This
means all fuel lines should be capped when open.
The work should be done in a relatively clean
area, if possible, and the work should be
completed in the shortest time possible.
CAUTION: Do not remove the radiator
cap while the engine is hot.
1.
Thermostat Housing
2.
Gasket
3.
Thermostat
4.
Water Pump
Figure 25: Thermostat
AEA627
Summary of Contents for 914970
Page 3: ...3...
Page 10: ...Table of Contents 10...
Page 40: ...Operating Instructions 40...
Page 82: ...Electronic Controls 82...
Page 92: ...Electrical Maintenance 92...
Page 124: ...Refrigeration Maintenance 124...
Page 140: ...Hilliard Clutch Maintenance 140...
Page 160: ...Refrigeration Diagrams 160...
Page 163: ...Index 163 W wiring 85 wiring diagrams 165...
Page 164: ...Index 164...
Page 166: ...Wiring and Schematic Diagrams Index 166...
Page 167: ...167 Cab Control RD Wiring Diagram...
Page 168: ...168 RD w o Thermostat Cab Control Schematic...
Page 169: ...169 RD Cab Box Wiring Diagram...
Page 170: ...170 RD Cab Control w Thermostat Schematic Diagram...
Page 171: ...171 RD 50 STD 3 Phase Wiring Diagram Page 1 of 2...
Page 172: ...172 RD 50 STD 3 Phase Wiring Diagram Page 2 of 2...
Page 173: ...173 RD 50 STD 3 Phase Schematic Diagram Page 1 of 2...
Page 174: ...174 RD 50 STD 3 Phase Schematic Diagram Page 2 of 2...
Page 175: ...175 RD 30 STD Wiring Diagram Page 1 of 2...
Page 176: ...176 RD 30 STD Wiring Diagram Page 2 of 2...
Page 177: ...177 RD 30 STD Schematic Diagram Page 1 of 2...
Page 178: ...178 RD 30 STD Schematic Diagram Page 2 of 2...
Page 179: ...179 RD 30 C S Wiring Diagram Page 1 of 2...
Page 180: ...180 RD 30 C S Wiring Diagram Page 2 of 2...
Page 181: ...181 RD w CYCLE SENTRY Schematic Diagram Page 1 of 2...
Page 182: ...182 RD w CYCLE SENTRY Schematic Diagram Page 2 of 2...
Page 183: ...183 RD 50 C S 3 Phase Wiring Diagram Page 1 of 2...
Page 184: ...184 RD 50 C S 3 Phase Wiring Diagram Page 2 of 2...
Page 185: ...185 RD w CYCLE SENTRY Schematic Diagram Page 1 of 2...
Page 186: ...186 RD w CYCLE SENTRY Schematic Diagram Page 2 of 2...