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7.9.7
Engine Cooling System
The engine cooling system is designed to
maintain the engine operating temperature
within the specified operating range.
Anti-freeze is essential in any climate. It
broadens the operating temperature range
by lowering the coolant freezing point and
by raising its boiling point.
also contains rust inhibitors and other
additives to prolong engine life.
IMPORTANT
If anti-freeze strength is not adequate, do
not drain cooling system to protect against
freezing.
System
completely, and damage from freezing
could still result.
To service the cooling system, perform the
following:
DANGER
Stop engine and remove key from ignition
before leaving operator's seat for any
reason. A child or even a pet could engage
an idling machine.
a. Stop engine and remove key.
b. Move the left cab-forward platform to the open
position for access to the coolant tank and
radiator. Ensure the platform latch is engaged in
open position.
Form 169017
MAINTENANCE/SERVICE – M150 ENGINE
NOTE
Anti-freeze
may
not
drain
c. Raise engine compartment hood to lowest
position.
7.9.7.1
Coolant Level and Concentration
a. Check daily the coolant level in the coolant
recovery tank (A). Tank should be at least half
full.
b. If less, then remove cap (B) and add coolant.
Use Ethylene Glycol or Propylene-Glycol with
SCA equal parts with water to protect the engine
to temperatures of -30°F (-34°C).
Do not add coolant to radiator except
when changing coolant.
c. Replace cap (B).
135
B
A
NOTE
Issue – June 2008
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