"Underdrive", and times the rear tandem double-reduction ratios could and will
cause something to give.
Use your power wisely.
Don't shi[t your aux box on the run.
Come to a stop first and then select the aux box range that will do your job.
Keep
with that ratio until you stop again.
The aux box is a heavy duty type and is not Intended as a splitter transmission.
Don't
complicate It and round-off gear teeth!
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