
178 OPERATION
Winterfronts
A winterfront, although not recommended, may be used during cold weather,
with sustained temperatures below -25°C (-13°F), to aid the engine in reaching
and maintaining engine coolant temperatures within the normal operating
range.
CAUTION
Use a winterfront designed for the specific chassis. Restricted air flow through the
charge air cooler can cause higher exhaust temperatures, power loss, excessive fan
usage, reduced fuel economy and possible engine or charge air cooler damage.
The use of any other type of device, such as a radiator cover, cardboard or similar
material, is not approved by Mack Trucks, Inc.
Note:
The minimum operating temperature is 77°C (170°F).
If a winterfront is used, a MACK-approved exhaust pyrometer must also be
installed and closely monitored while the engine is in operation.
CAUTION
DO NOT exceed the maximum exhaust temperature listed on the pyrometer decal.
To reduce exhaust temperature, open the winterfront, downshift or reduce engine
power.
Summary of Contents for Granite GU Series
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Page 44: ...SAFETY INFORMATION 33 Advisory Label Locations On Vehicle Labels Found on Chassis C0029831 ...
Page 45: ...34 SAFETY INFORMATION C0028958 ...
Page 46: ...SAFETY INFORMATION 35 C0028959 ...
Page 47: ...36 SAFETY INFORMATION C0029013 1 Right Side Frame Rail 2 Hood Prop ...
Page 48: ...SAFETY INFORMATION 37 C0029014 ...
Page 49: ...38 SAFETY INFORMATION Labels Found on Driver Side Sun Visor C0029832 ...
Page 50: ...SAFETY INFORMATION 39 C0029016 ...
Page 58: ...SAFETY INFORMATION 47 C0029833 ...
Page 60: ...SAFETY INFORMATION 49 C0029834 ...
Page 62: ...SAFETY INFORMATION 51 C0029835 ...
Page 72: ...INSTRUMENTS AND CONTROLS 61 Panel B W3056238 ...
Page 81: ...70 INSTRUMENTS AND CONTROLS C0029141 ...
Page 82: ...INSTRUMENTS AND CONTROLS 71 Diagnostics W3036575 W3036576 W3036583 ...
Page 84: ...INSTRUMENTS AND CONTROLS 73 C0029144 ...
Page 113: ...102 INSTRUMENTS AND CONTROLS C0029240 C0029241 ...
Page 235: ...224 OPERATION C0029351 ...
Page 241: ...230 OPERATION C0029352 ...
Page 284: ...MAINTENANCE AND LUBRICATION 273 C0029851 C0029852 1 Towhook Access ...
Page 305: ...294 MAINTENANCE AND LUBRICATION C0029434 1 Front 2 Back ...
Page 317: ......