Perkins — Pistons and Connecting Rods - Install
Repair & overhaul
From a Perkins service manual — check it applies to your exact model before use.
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Before you start
- Fracture split connecting rods should not be left without connecting rod caps installed.
Procedure
- Remove connecting rod caps; discard used connecting rod bolts.
- Apply clean engine oil to cylinder bore, piston, rings, and shells.
- Rotate crankshaft to bottom center; lubricate journal.
- Lubricate piston ring compressor with clean engine oil; install on piston.
- Ensure piston can easily slide from tool.
- Carefully push piston and connecting rod into cylinder bore and onto crankshaft pin.
- Ensure etched numbers match; install connecting rod cap and new bolts.
- Tighten new bolts to 50 N·m; turn additional 70 degrees clockwise.
- Check tactile side play and rotate crankshaft for binding.
- Repeat for remaining pistons and connecting rods.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 50 N·m plus 70 degrees
Source: Perkins 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.