Cummins/Onan N52M — Install Crankshaft
Repair & overhaul
For the Cummins/Onan N52M, from the Cummins/Onan service manual.
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Procedure
- Lubricate flat surface of thrust washers with oil to hold them in position.
- Observe shims that were in engine when disassembled.
- Lubricate crank journals with recommended engine oil or soluble grease.
- Insert crankshaft into block.
- Remove new oil seal from gasket kit and use oil seal guide and driver 420-0181.
Tools required
- Oil seal guide and driver 420-0181 Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Cummins/Onan service 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.