Mitsubishi S12A2 — Installing main bearing caps
Installation
For the Mitsubishi S12A2, from the Mitsubishi service manual.
Applies to: Mitsubishi S12A2
Before you start
- Observe specified tightening sequence.
Procedure
- Install the main bearing caps in numerical order from the front end of engine toward the rear end.
- Apply engine oil to the threads of bearing cap bolts.
- Fit the caps in the crankcase using the bolts as a guide.
- Tap each bearing cap with a soft-head hammer.
- Make sure the main bearing caps are firmly in position through side bolt holes.
Tools required
- Soft-head mallet Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Main bearing cap bolts M24 × 3.0: 588 ± 29.4 N·m [Wet]
- Main bearing cap side bolts M16 × 2.0: 147 ± 7.4 N·m [Wet]
Full service-parts list: Mitsubishi S12A2 →
Source: Mitsubishi 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.