7
Coolant Fill Instructions
– For Use With Cold Weather Kit
NEVER OPEN THE COOLING SYSTEM WHILE HOT!
Perform a visual check of both the chassis engine and the Twister coolant expansion bottle with both
engines cold. The Twister expansion bottle should be 1/3 full or less. Consult the chassis owner’s
manual for the correct chassis coolant level.
Check the coolant level in the Chassis reservoir
Coolant should be at the manufacturer’s suggested level. If low, open cap very slowly, if coolant
remains in Twister, it will spill into chassis reservoir as the air lock is broken. Allow to fill to
manufacturer’s suggested level from Twister or if required add additional coolant. Once
suggested level is reached, close system and
DO NOT OPEN AGAIN.
Check the coolant level in the Twister
SLOWLY
open the Twister radiator cap. Correct coolant level is ½ inch above radiator core when
cold. If level is not above the core of the radiator, add coolant using the same coolant as
suggested by the chassis manufacturer. Do not fill upper radiator tank to top as room is
required for expansion as truck and/or Twister heat up. Overfilling will cause coolant overflow
at the Twister.
Test the system by running the Twister or the chassis engine. Let engine(s) cool and check for correct
level and fill (
AT THE TWISTER
) as necessary until the coolant is at the correct level.
TIP: If chassis reservoir has been overfilled by opening the cap and breaking the air lock or by simply
adding too much coolant while performing the above checks, ensure that the Twister coolant level is
LOW.
The coolant levels will then balance themselves as the Twister/truck runs. After running, allow to
cool down and recheck levels at both the chassis and Twister. Coolant level should be correct in chassis
reservoir. If low at the Twister, add coolant to the Twister to bring to correct level – ½ inch above core.
