National Crane Published 8-01-2017 Control # 287-11 9-9
NBT40 SERVICE MANUAL CRANE INSTALLATION
Diesel engines require a variable speed governor and
energize-to-run fuel solenoid for smooth crane operation;
electronic fuel injection is required.
All mounting data is based on a National Series NBT40 with
subbase and an 85 percent stability factor.
Complete unit must be installed in accordance with factory
requirements, and a test performed to determine actual
stability and counterweight requirements; contact factory for
details.
Transmission neutral safety interlock switch is required.
The speeds shown above are optimum operating speeds.
The engine must be operated at a speed such that the
horsepower developed is adequate to pull the pumps under
pressure and flow requirements.
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