OPERATION 137
Shifting at the proper time will result in increased fuel efficiency, as well as a decrease in
costly repairs. Remember that once the engine falls below peak torque, both torque and
horsepower will drop off very rapidly. Before this happens, downshift to the next lower gear.
For vehicles with transmissions that have extreme reduction gearing coupled with high
rear-axle loads, a torque-limiting device should be used. This device limits the amount of
fuel that can be delivered to the engine and prevents overloading of drivetrain components
while in extreme reduction gears.
Always use the same gear going downhill as uphill. This will reduce brake wear and prevent
damage to the engine from overspeeding.
Engine Temperature
Before entering high-speed traffic conditions, allow the engine to reach normal operating
temperature. A normal operating range is between 77°C and 104°C (170°F and 220°F) for
stationary vehicles
.
Summary of Contents for CHM 2010
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Page 25: ...SAFETY INFORMATION 17 Advisory Label Locations On Vehicle Labels Found on Chassis C0032631...
Page 26: ...18 SAFETY INFORMATION W8061742...
Page 27: ...SAFETY INFORMATION 19 C0032633...
Page 28: ...20 SAFETY INFORMATION W8061397...
Page 29: ...SAFETY INFORMATION 21 Labels Found on Driver Side Sun Visor W8061402...
Page 35: ...SAFETY INFORMATION 27 C0032643...
Page 37: ...SAFETY INFORMATION 29 C0032645...
Page 47: ...INSTRUMENTS AND CONTROLS 39 INSTRUMENT PANEL GAUGE LAYOUT C0032654...
Page 76: ...68 INSTRUMENTS AND CONTROLS C0032684...
Page 107: ...OPERATION 99 W4059732 Control Switch W4059733 Mode Switch...
Page 160: ...152 OPERATION C0032897...
Page 166: ...158 OPERATION C0032898...
Page 192: ...184 Mack Emissions Solution W8056653...
Page 207: ...MAINTENANCE AND LUBRICATION 199 C0032899 C0032900 1 Towhook Access...
Page 218: ...210 MAINTENANCE AND LUBRICATION ELECTRICAL Circuit Breaker and Relay Panels C0032908...
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