Posted on by

ISM, ISMe, and QSM11 – 001-047   Piston Rings

Table of Contents

Failure Analysis Inspection

Failure Analysis Inspection

 TOC

To check the ring gap, install the piston rings into the cylinder liner in which they were used, below the ring reversal area.

Use the top part of the piston to position the ring in the liner.

Use a feeler gauge to inspect the ring end gap.

Piston Ring Gap

mm in
Top 0.35 MIN 0.014
  0.60 MAX 0.024
Intermediate 0.76 MIN 0.030
  1.14 MAX 0.045
Oil 0.26 MIN 0.010
  0.64 MAX 0.025

If failure resulted in coolant, oil, excessive fuel, or excessive black smoke entering the exhaust system, the aftertreatment system must be inspected. Refer to Procedure 014-013 in Section 14.

SMALL | MEDIUM | LARGE
Last Modified:  21-Jan-2009
Avatar photo

Published by Jack

Hello, I'm Jack, a diesel engine fan and a blogger. I write about how to fix and improve diesel engines, from cars to trucks to generators. I also review the newest models and innovations in the diesel market. If you are interested in learning more about diesel engines, check out my blog and leave your feedback.