Cummins/Onan — Pulley Selection
Installation · Generator pulley
From a Cummins/Onan owner's manual covering: 1.5UF-232S, 10.0UF-150S, 12.0UF-3S, 12.0UF-4S, 15.0UB-150S, 15.0UF-3S/104, 2.0UF-125S, 2.0UF-232S/32, 2.0UG-1S/135, 2.5UF-1S, 2.SUD-IS, 2.SUD-IS/ID…. Check it applies to your exact model before use.
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Procedure
- Multiply the diameter of the driving unit pulley by its speed in rpm.
- Divide the result by the nameplate speed of the generator (1800 rpm).
- Select the approximate generator pulley size from the pulley selection table.
- If the recommended size is unavailable, select one size smaller pulley to offset belt slippage.
Specs & values
- Generator pulley speed 1800 rpm
- Generator pulley speed 1500 rpm
Source: Cummins/Onan owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.