Cummins/Onan — Oil Pan Installation
Repair & overhaul
From a Cummins/Onan service manual — check it applies to your exact model before use.
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Before you start
- Failure to use Motorcraft High Performance Engine RTV Silicone may cause engine oil to foam excessively and result in serious engine damage.
Procedure
- Apply 5.5 mm bead RTV silicone to 2 crankshaft front cover-to-cylinder block joint areas.
- Apply 3 mm bead RTV silicone to oil pan sealing surface.
- Apply 5.5 mm bead RTV silicone to 2 crankshaft seal retainer plate-to-cylinder block joint areas.
- Install oil pan and bolts finger tight; align oil pan to cylinder block.
- Tighten oil pan bolts: 3 Nm; then 24 Nm; then 10 Nm.
- Tighten oil pan and bellhousing bolts to 48 Nm (35 lb-ft).
Specs & values
- Oil pan bolts: Stage 1: 3 Nm; Stage 2: 24 Nm; Stage 3: 10 Nm
- Bellhousing bolts: 48 Nm (35 lb-ft)
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.