![background image](http://html1.mh-extra.com/html/mack/granite-gu-series/granite-gu-series_operators-handbook-manual_686197150.webp)
OPERATION 139
MACK ENGINE INFORMATION
For engine starting procedures, refer to “STARTING THE VEHICLE”, page
169.
Precautions and Warnings
CAUTION
If a winterfront is needed, use only a winterfront that was designed for this specific
chassis. Winterfronts are not recommended, but may be used during very cold
weather with sustained temperatures below -25°C (-13°F).
CAUTION
Be sure to avoid high intake/exhaust temperatures when using winterfronts under
normal operating conditions (above freezing). The restriction of airflow can cause
higher exhaust temperatures, power loss, excessive fan usage and reduced fuel
economy.
CAUTION
If a winterfront is used, a MACK-approved exhaust pyrometer must be installed and
closely monitored while the engine is in operation. Do NOT exceed the maximum
temperature indicated by the red line on the gauge. To reduce exhaust temperature,
downshift or reduce engine power and open the winterfront.
CAUTION
Do not permit a heavy load to drive the engine above the governed speed. Operate
in a gear low enough to allow the engine to accelerate to (or maintain) governed
speed when applying the throttle.
Summary of Contents for Granite GU Series
Page 2: ......
Page 11: ......
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: ......