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Old 03-19-2017, 02:34 PM   #1
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Default Safe shift RPM - Cummins 330 Diamond

Been searching for an engine manual for a while, no joy.

Would like to know the max safe RPM for gear shifting for a Cummins 330 diamond.

Thanks in advance.
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Old 03-20-2017, 01:15 PM   #2
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http://www.sbmar.com/docs/performanc...M-90208%5D.pdf

Minimum Idle Speed Setting .................................................. ............................................. RPM 600
Normal Idle Speed Variation .................................................. .......................................... RPM ±50

Typically it would be recommended to shift at Idle. So, throttle pulled back to the pin.
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Old 03-20-2017, 08:25 PM   #3
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Thanks shrew. Idle always makes sense, somewhere along the way I ran across the words 'minimum safe' - my guess is that they meant idle.
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