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Engine Maintenance
97
Antifreeze Maintenance Procedures
As with all equipment containing antifreeze,
periodic inspection on a regular basis is required
to verify the condition of the antifreeze. Inhibitors
become worn out and must be replaced by
changing the antifreeze. Change green or
blue-green engine coolant every two years.
Change ELC (red) engine coolant every five years
or 12,000 hours (whichever occurs first).
Do not mix green or blue-green engine coolant
with ELC (red) engine coolant. See “ELC
(Extended Life Coolant)” on page 96 for more
information about ELC.
The factory recommends the use of a 50/50
percent antifreeze mixture in all units even if they
are not exposed to freezing temperatures. This
antifreeze mixture will provide the required
corrosion protection and lubrication for the water
pump.
Checking the Antifreeze
Check the solution concentration by using a
temperature compensated antifreeze hydrometer
or a refractometer designed for testing antifreeze.
Maintain a minimum of 50 percent permanent
type antifreeze concentrate and 50 percent water
solution to provide protection to -30 F (-34 C). Do
not mix antifreeze stronger than 68 percent
permanent type coolant concentrate and 32
percent water for use in extreme temperatures.
Changing the Antifreeze
1. Run the engine until it is up to operating
temperature. Stop the unit.
2. Open the drain cock (see Figure 124 on page
94 or Figure 125 on page 95) and completely
drain coolant. Observe coolant color. If the
coolant is dirty, proceed with a, b, and c.
Otherwise go to step 3.
a. Run clear water into radiator and allow it
to drain out of the drain cock until it is
clear.
b. Close the drain cock and install a
commercially available radiator and block
flushing agent, and operate the unit in
accordance with instructions of the
flushing agent manufacturer.
c. Open the drain cock to drain water and
flushing solution.
3. Run clear water into the radiator, and allow it
to drain out of the drain cock until it is clear.
When water has finished draining, close drain
cock.
4. Inspect all the hoses for deterioration and the
hose clamp tightness. Replace if necessary.
5. Loosen the water pump belt. Check the water
pump bearing for looseness.
6. Inspect the radiator cap. Replace the cap if the
gasket shows any signs of deterioration.
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 the 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.
CAUTION: Avoid direct contact with hot
coolant.
CAUTION: Avoid direct contact with hot
coolant.
CAUTION: Do not remove the radiator
cap while the engine is hot.
Summary of Contents for SPECTRUM TS 30 SR NAD
Page 4: ...4 ...
Page 10: ...Table of Contents 10 ...
Page 20: ...Safety Precautions 20 ...
Page 51: ...Unit Description 51 Figure 19 Front View Figure 20 Back View AJA1350 AJA1500 ...
Page 52: ...Unit Description 52 1 On Off Switch Figure 21 Side View 1 ...
Page 60: ...Unit Description 60 ...
Page 80: ...SPECTRUM TS Operation 80 ...
Page 90: ...Electrical Maintenance 90 ...
Page 100: ...Engine Maintenance 100 Figure 130 Early TK 3 95 Fuel and Oil System Components ...
Page 102: ...Engine Maintenance 102 Figure 131 Late TK 3 95 Fuel and Oil System Components ...
Page 104: ...Engine Maintenance 104 Figure 132 TK376 Fuel and Oil System Components ...
Page 136: ...Refrigeration Maintenance 136 ...
Page 156: ...Hilliard Clutch Maintenance 156 ...
Page 158: ...Structural Maintenance 158 ...
Page 168: ...Remote Evaporator Specifications 168 ...
Page 170: ...Remote Evaporator Maintenance Inspection Schedule 170 ...
Page 176: ...Remote Evaporator Electrical Maintenance 176 ...
Page 180: ...Remote Evaporator Refrigeration Service Operations 180 ...
Page 182: ...Remote Evaporator Structural Maintenance 182 ...
Page 184: ...Remote Evaporator System Diagnosis 184 ...
Page 188: ...Wiring and Schematic Diagrams Index 188 ...
Page 189: ...189 Wiring Diagram Page 1 of 4 ...
Page 190: ...190 Wiring Diagram Page 2 of 4 ...
Page 191: ...191 Wiring Diagram Page 3 of 4 ...
Page 192: ...192 Wiring Diagram Page 4 of 4 ...
Page 193: ...193 Schematic Diagram Page 1 of 3 ...
Page 194: ...194 Schematic Diagram Page 2 of 3 ...
Page 195: ...195 Schematic Diagram Page 3 of 3 ...
Page 196: ...196 ...