|DodgeRam.info > TSB's > ISB stuck valves|
|Visit Geno's Garage
for Truck accessories.
|Subject : ISB Sticking Valves/Bent Push Tubes|
|Product Name:||MR - ISB/QSB||SPT Group :||002 Cylinder Head|
|Date:||01/06/2000||Equipment Application :||ALL|
|Distribution :||Internal and Distributor Service Information||Originator :||Daniel Fedewa|
As the ambient air temperatures have started to drop in out Northern Regions we are reminding the field, by this Thursday Note, on the ISB sticking valve / bent push tube issue. The 4 valve cylinder head on the ISB runs at a cooler temperature, which in some cases is allowing tar to condense on the exhaust valves. This may result in sticky valves and bent push tubes. The 2 valve head runs at a hotter temperature, thus preventing the tar build up. To reduce the risk, the following recommendations should be followed. This may be found in the PITs document "JJGN-44BKRU"
STICKING VALVES - SERVICE PLAN
Reactive short term: Repair and clean cylinder head as required.
Proactive short term: To prevent or decrease the risk of this occurring to an engine which frequently idles for long periods of time in arctic temperatures, Cummins recommends the following:
Thanks to Jerry J. Weigel for supplying this TSB information
This page was edited on: May 3, 2004