Perkins 4016-61TRS1 Operation And Maintenance Manual page 58

58
Maintenance Section
Cooling System Coolant - Test/Add
4. Follow steps 4 to 6 on jacket water system in order
to complete charge water refill.
Cooling System Coolant - Test/
Add
Check the specific gravity of the
coolant
Illustration 36
The chart for the Specific gravity
A = Percentage of antifreeze by volume
B = The temperature of the mixture in °F
C = Specific gravity
D = The temperature of the solution in °C
The following procedure must be used to measure
coolant that contains antifreeze:
1. Operate the engine until the coolant temperature
opens the thermostat. Continue to run the engine
until the coolant has circulated around the cooling
system.
2. Stop the engine.
3. Allow the engine to cool until the temperature is
below 60 °C (140 °F).
Pressurized System: Hot coolant can cause seri-
ous burns. To open the cooling system filler cap,
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stop the engine and wait until the cooling system
components are cool. Loosen the cooling system
pressure cap slowly in order to relieve the
pressure.
4. Remove the filler cap of the cooling system.
5. Drain some of the coolant from the cooling system
into a suitable container.
6. Use a special hydrometer that will check the
temperature and the specific gravity of the coolant,
and follow the manufacturer's instructions.
Note: If a special thermo-hydrometer for coolant is
not available, put an hydrometer and a separate
thermometer into the antifreeze mixture and check
the readings on both instruments. Compare the
readings with the data in illustration 36 .
Note: If necessary, fill the system or replenish the
coolant in the system with premixed coolant of the
correct strength. Refer to the Operation and
Maintenance Manual, "Fluid recommendations".
Perkins POWERPART antifreeze with a
concentration of 50% will give protection against frost
to a temperature of −35 °C (−31 °F). The solution will
also protect against corrosion. This is especially
important when there are aluminum components in
the cooling circuit.
7. Adjust the strength of the mixture if it is necessary.
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Cooling System Coolant Level
- Check
Pressurized System: Hot coolant can cause seri-
ous burns. To open the cooling system filler cap,
stop the engine and wait until the cooling system
components are cool. Loosen the cooling system
pressure cap slowly in order to relieve the
pressure.
Refer to the OEM for information on cogeneration
engines.
Check the coolant level when the engine is stopped
and cool.
SEBU8430-02
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