Table of Contents
Advertisement
282 MAINTENANCE AND LUBRICATION
1. Expansion Tank
Draining the Cooling System
Whenever repairs are to be made which would require disconnection of
coolant hoses, etc., the cooling system should be drained. Carefully remove
the filler cap and remove all pipe plugs.
Refilling the Cooling System
Close all drain cocks and fill with the proper coolant mixture. Run engine
with the pressure cap removed until operating temperature is reached and
the thermostat opens. Recheck level and add coolant if required. Run the
engine long enough to be sure the system is free of air and has the correct
amount of coolant.
Protecting the Cooling System
CAUTION
The concentration of ethylene glycol or propylene glycol in the cooling system must
be checked with a refractometer prior to traveling or operating in areas where
subfreezing temperatures may be encountered. When adding antifreeze to the
system, run the engine for 20 minutes before checking with a refractometer.
Note: Your chassis is currently supplied from the factory with engine coolant
protection to –23°C (–10°F). Optional coolant protection to –40°C (–40°F) is also
available.
C0029854
Hide quick links:
Advertisement
Table of Contents
