When did I change the idler pulley on my Cummins 6BT?
When did I change the idler pulley on my Cummins 6BT?
The engineers updated the idler pully support arrangement and that basically solved the issue about 1994-ish. For those engines that did not come with the upgrade idler pulley support system, a “hands-on” approach to this is what this article is about.
How to remove a pulley from a crankshaft?
CAUTION Do not use a hammer or a screwdriver to remove the viscous damper. These tools can damage the damper. Remove two of the vibration damper and crankshaft pulley retaining capscrews. Install two guide studs, Part Number 3376696, in the holes. Remove the remaining three capscrews, clamping plate, pulley, and damper. Inspect for Reuse
How to troubleshoot a crankshaft pulley ISM?
• For L10 engines, refer to Procedure 7-32 in the Troubleshooting and Repair Manual L10 COMMAND STC and CELECT™ Models, Bulletin 3810439. • For M11 engines, refer to Procedure 016-005 in the Troubleshooting and Repair M11 Series Engines (STC, CELECT™, CELECT™ Plus Models), Manual, Bulletin 3666139.
How often should I Change my idler pulley?
Both pulleys use industry standard 6203 sealed bearings (worth about $ 10 each or less) and can be changed with minimum effort if this is needed (about every 5000 hours in a clean dry environment—more often if wet). When doing this upgrade, be sure you lubricate the parts/bolt/nut (common grease) and torque to yield (about 45-55 ft lbs).
When did Cummins change the idler pulley arrangement?
For the Cummins Marine B & C series engines released in the late 80’s to early 90’s, the idler pulley arrangement had an unacceptable failure rate. The engineers updated the idler pully support arrangement and that basically solved the issue about 1994-ish.
How to replace idler pulley on Cummins 6BT / 6bta?
For those wishing to do this themselves————–Replace the original 10mm bolt with a Grade 8 – 7/16 x 2 3/4″ bolt and nut. This requires drilling the spacer (new or old style) to 29/64″ and drilling the engine bracket to 7/16″.
CAUTION Do not use a hammer or a screwdriver to remove the viscous damper. These tools can damage the damper. Remove two of the vibration damper and crankshaft pulley retaining capscrews. Install two guide studs, Part Number 3376696, in the holes. Remove the remaining three capscrews, clamping plate, pulley, and damper. Inspect for Reuse
How to get the best parts for your Cummins Engine?
Get the best parts for your Cummins engine or generator. Insisting on Genuine Cummins Parts is the best way to ensure the long life of your Cummins-powered equipment. Use these resources for parts inquiries or to locate the parts you need. For which type of Cummins product can we provide you a quote? * What type of engine are you interested in?
