Facts About Generators
GeneratorsDirectoryCompareRepairEnginesControllersPartsManufacturersGuides
Search models or part #
Home›Repair guides›Installing Piston Rings

Cummins/Onan — Installing Piston Rings

For these Cummins/Onan models: 2400, 3500.

Browse Cummins/Onan generators & specs →

Procedure

  1. Install all rings with the markings facing upward.
  2. Be sure that the top (chrome plated) and second rings are not interchanged.
  3. Check that the rings rotate smoothly after installation.
  4. Space the piston ring end gaps 120 degrees apart, and do not align the gaps with the piston pin bore.

Tools required

  • Long-nosed pliers (for piston pin clip)

Source: manual:914-0500 Onan 2EGMBB 2.5EGMBG HomeSite Portable Genset Service manual (03-2006).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.