Mack CHM 2010, Руководство оператора

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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
.