170 OPERA TION

Engine Block Heaters

engine block heater works heating the coolant surrounding the combustion Engine heaters are recommended help combat the extreme demands cold weather operating When the temperature the engine heater can plugged The location the engine heater power receptacle varies according vehicle

C0029338

Engine Block Heaters

Engine Heater Benefits

• Eliminates cold weather starting problems.

• Increases engine life significantly keeping the engine warm and avoiding costly , excessive

• Prevents external water leaks caused excessive cold.

• Allows the cab heat more quickly .

• Reduces the temperature which ether

• Allows the engine heaters activated soon the engine stopped.

W interfronts

A winterfront, although not recommended, may used during cold weather , with sustained temperatures below25°C ( - 13°F), aid the engine reaching and maintaining engine coolant temperatures within the normal operating range.

Caution

Use a winterfr ont designed for the specific Restricted air flow thr ough the char air cooler can cause higher exhaust temperatur power excessive fan r educed fuel economy and possible engine char air cooler

The use any other type such a radiator cover , car dboar d similar not appr oved Mack T a winterfront used, a MACK - approved exhaust pyrometer must also installed and closely monitored while the engine operation.

Note: The minimum operating temperature 77°C (170°F).

Caution

NOT exceed the maximum exhaust temperatur e listed the pyr ometer T o r educe exhaust temperatur open the winterfr downshift r educe engine power