1989/11/01 Caterpillar


Different Thread Lubricant Can Be Used On Connecting Rod, Main Bearing Cap And Counterweight Bolts

Usage:


3500 Family Of Engines And Engines With Serrated Connecting Rods

SUPPLEMENT: SEPTEMBER 1998

Engine News SEBD9153, Article 13, Page 9, November 1989; "Different Thread Lubricant Can Be Used On Conntecting 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 It has been replaced by "Recommended Lubrication And Torque Procedure For Connecting Rod Bolts", "Recommended Lubrication And Torque Procedure For Crankshaft Counterweight Bolts", and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 Engine News SEBD9264, Articles 9, 10 and 11, Pages 6, 8 and 9.

--------------- END SUPPLEMENT ---------------

Reference: Engine News; June 20, 1984; Page 6: "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.

Caterpillar Information System:

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