Kenworth T410, Driver'S Handbook Manual

Page: 256 / 418

Page 230 CAT: 8612 November 2019
PREVENTIVE MAINTENANCE
8. Idle the engine for several minutes.
9. Fill as necessary to raise coolant level to proper level.
10.
Replace the surge tank filler cap.
Do not mix coolants of different brands or types. If the brand or type of
coolant is changed, the cooling system must be drained and flushed prior
to refill.
Check coolant level after each trip when the engine has cooled. Add
coolant as necessary. Time must pass for all the trapped air to be purged
from the system.
Kenworth radiators with de-aeration system - When installing Kenworth
radiators that have a built-in surge tank, the engine fill-line or anti-cavitation
line and air bleed line (see illustration on page 228) MUST be connected to
the engine, and connected correctly. If these lines ARE NOT connected, it
will be impossible to fill the cooling system with coolant and engine failure
is inevitable.
The air bleed line connects into the engine side of the engine thermostat.
This line allows air to bleed from the running engine when the engine
thermostat is closed. It also allows air to bleed from the engine when filling
the cooling system.
The anti-cavitation line (1” heater hose) connects into the suction side of
the coolant pump. This line supplies non-agitated coolant to the pump, to
prevent cavitation. Both the anti-cavitation line and the air bleed line should
take a continuous downward route from the radiator to their engine inlets.
It also allows the cooling system to be filled with coolant.
Cooling system capacities are provided as a guide only. Actual coolant fill
will vary with equipment, i.e. heat exchanger, sleeper heater etc.
Maintain proper coolant concentration levels.
Antifreeze solutions containing antileak additives will quickly restrict a coolant
filter and render it ineffective.
Do not add rust inhibitors, radiator sealants or water pump lubricants
containing soluble oil to the coolant. The additives can deactivate the
anticorrosion chemicals.
For more information on maintenance of the cooling system refer to Cooling
System - Section 12 CAT: 8080 in your Electronic Customised Maintenance
Manual. Fill quantities are on pages 333.