1989/11/06 Caterpillar

Different Thread Lubricant Can Be Used On Connecting Rod, Main Bearing Cap And Counterweight Bolts{1203,1225,1231}

Usage:

3500 Family Of Engines, All Engines With Serrated Connecting Rods

SUPPLEMENT: SEPTEMBER 21, 1998

Service 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 It has been replaced by "Recommended Lubrication And Torque Procedure For Connecting Rod Bolts", "Recommended Lubrication And Torque Procedure For Crankshaft Counterweight Bolts", and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.

Caterpillar Information System:

1989/11/06 Narrow Wear Rings Now Used On All Hydraulic Cylinder Rods{4303}

1989/11/06 Procedure To Lessen Governor Control Lever Effort{1265}

1989/10/30 Two Remote Instrument Panels Available: Conventional and EMCP{7002}

1989/10/30 New Connecting Rod and Main Bearing Kits Available{1230,1203,1219}

1989/10/30 New MG507 And MG507A Marine Gear Groups; New Marine Transmission Mounting Group{3354,3279}

1989/10/30 Exhaust Manifold Gasket Removed From Between Exhaust Sleeve And Manifold Section{1059}

1989/10/30 Service Program Modules Must Be Ordered By Literature Form Numbers{1705,7494}

1989/10/30 New Service Tools Available{0600,0700}

1989/10/30 Understanding Four-Wire Windshield Wiper Motors (12 & 24 V){7305,1408}

1989/10/23 New Nut For Lifting Eye Bracket{1122}

1989/10/23 New Shaft Assembly And Lever Assembly Used In Air Shut-Off Group{7418,1078}

1989/10/23 New Water Level Gauge Group For Folded Core Radiators{1353,7422,7479}

1989/11/06 Use Correct Calibration Pin (1U9786) When Calibrating Governor; Do Not Use 1U7305 Insertion Tool{0706,0782,1264}

1989/11/13 Engine Coolant Can Be Recycled{1395}

1989/11/13 New 3161 Marine Governor Provides Better Low Idle Stability{1264}

1989/11/13 New Gasket With Stainless Steel Flange Used In Exhaust Manifold Group{1059}

1989/11/13 Cylinder Liner Changes{1216}

1989/11/20 Effective Dates, Serial Numbers and Features Of PEEC Personality Modules{1705,1707}

1989/11/27 Spark Plug Gasket Available{1550,1555}

1989/11/27 New Flanges Used And Gaskets Added To Water Cooled Turbocharger Exhaust Connections{1059,1070}

1989/11/27 Improved Turbocharger Wash Water Lines Group Available On Engines Powered By Residual (Heavy) Fuel{1052}

1989/11/27 Failures Of Unit Injector O-Ring Seals{1290}

1989/11/27 Electrostatic Painting And/Or Incorrect Welding Can Cause Permanent Damage To Electronic Control Module (ECM){1706}

1989/11/27 New Turbocharger, Piston And Fuel Ratio Control Used{1052,1214,1215,1278}