Power Solutions International — Piston-rod assembly
Repair & overhaul
From a Power Solutions International service manual — check it applies to your exact model before use.
Browse Power Solutions International generators & specs →
Before you start
- The numbered pistons should not be mixed.
Procedure
- Install one circlip into piston circlip groove.
- Insert small end of connecting rod into piston inner cavity and install piston pin.
- Install oil ring, second compression ring and first compression ring with piston ring plier.
- Clean cylinder inner wall and apply clean lubricating oil on each motion pair.
- Adjust opening direction of each ring.
- Install thrust plates of cylinder 1 and 6 and screw on connecting rod bolts.
- Tighten connecting rod bolts per machine-cut or fracture-split procedure.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Machine-cut: 30Nm then 60°±4°, torque up to 85~135 N·m
- Fracture-split: 30 N·m then 120±5°, torque up to 67~107 N·m
Source: Power Solutions International 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.