ENGINE AR-COMPLETE 3770713 - Caterpillar

Family Of Engines, All Engines With Serrated Connecting RodsSUPPLEMENT: SEPTEMBER 21, 1998Service Magazine SEBD1991, Article 11, Page 9, November 6, 1989; "Different Thread Lubricant Can Be Used On Connecting Rod, Main Bearing Cap And Counterweight Bolts".Disregard this article. It has been replaced by "Recommended Lubrication And Torque Procedure For Connecting Rod Bolts", "Recommended Lubrication And Torque Procedure For Crankshaft Counterweight Bolts", and "Recommended Lubrication And Torque Procedure For Main Bearing Cap Bolts" in Service Magazine SEPD0435, Articles 6, 7 and 8, Pages 12, 13 and 14.
--------------- END SUPPLEMENT ---------------Reference: Service Magazine; May 21, 1984; Page 10; "Different Thread Lubricant Can Be Used On Connecting Rod And Counterweight Bolts".Always use 6V4876 Molykote Paste Lubricant to prevent galling on bolts for connecting rods, main bearing caps, and counterweights. If 6V4876 Lubricant is not available, use Fel-Pro C100 Lubricant. Field testing shows these two products help prevent galling on the underside of the bolt head and its mating surface. DO NOT USE 2P2506 Thread Lubricant. Galling causes bolts to be incorrectly tightened and may result in inadequate clamping force.