Perkins — The cooling system consists of the following
A Perkins service procedure — check it applies to your exact model before use.
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Procedure
- Gear-driven centrifugal water pump
- Water temperature regulator which regulates the
- Gear-driven oil pump (gear type)
- Oil cooler
Source: manual:Perkins Operation and Maintenance Manual 1106D Industrial Engine.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.