1977/11/28 Caterpillar

Reference Chart For Main And Connecting Rod Bearings{1203,1219,1230}

Usage:

All 5.4"
Bore V-Type Engines Except 3400 Series

Several changes have been made to main and connecting rod bearings used in the above engines. Many part numbers are necessary for different sizes of replacement bearings, and it has been difficult for servicemen to understand the correct part numbers to use during engine service work. Also, an earlier article "New Main and Connecting Rod Bearings Are Made of Higher Strength Material" on Page 1 of the August 22, 1977 Service Magazine did not show the correct model application for the main bearings given in the article. Make a note that the earlier article is canceled and this article is to be used for reference.

For fast, easy reference, the parts chart that follows shows a complete list of the correct bearings for these engines, including part numbers of former bearings. This will be of assistance in the selection of correct bearings to use during engine service work.

Caterpillar Information System:

1977/11/21 Add Chamfer To Cartridge Assembly Bearings To Prevent Oil Leakage{1052,1053}

1977/11/21 New Housing And Impeller Assembly For Water Pump And Drive Group{1361}

1977/11/21 Improved Shaft Seal Material Used In All Vane-Type Hydraulic Pumps; Seal Kits Are Canceled{5055}

1977/11/21 Larger Diameter Holes Are Now Used In The Rocker Arm Shaft To Give More Oil Flow To Rocker Arm Bearings{1102}

1977/11/21 New Crankshafts Do Not Have Lightening Holes And Lubrication Passages Connected Together{1202,1219}

1977/11/21 New Elbow Between Turbocharger And Air Inlet Manifold Has Hole For Ether Starting Aid{1058,1456}

1977/11/14 New Exhaust Manifolds Made Of Stronger Material{1059}

1977/11/14 Exhaust Valves With 30° Face Angle Now Used For Parts Service{1101,1103,1105}

1977/11/14 New Electric Starting Motor Has Longer Brush Life{1453}

1977/11/07 Precision Oil Pump Bearings Now Available{1304}

1977/11/07 Improved Crankshaft Main Bearings And Connecting Rod Bearings With Higher Strength Aluminum Alloy{1203,1219,1230}

1977/11/07 Crankshaft Support Groups Are Available To Measure Bent Crankshafts{0653,1202}

1977/12/05 Water Separators Needed On Machines And Engines In The Field With SMFS{1250,0336}

1977/12/05 New Oil Filter Base Has Reinforcement Around The Center To Prevent Possible Cracks{1306}

1977/12/05 Use The 5P8610 Auxiliary Fitting Group To Charge Two Suspension Cylinders At The Same Time{0690,7201}

1977/12/05 New Fuel Injection Valve Assembly Has Improved Internal Components{1254}

1977/12/12 Use Hardened Flat Washers With Diagonal-Split Hydraulic Flanges{5057,7553}

1977/12/12 New Coolant Tube And Regulator Housing Used With Water Cooled Exhaust Manifold Gives More Clearance For Hooks To Lift The Engine{1350,1355,1380}

1977/12/12 Excessive Oil Consumption Can Be Caused By Dirt In Air Inlet System Or By Flaking Of The Piston Compression Ring{1213,1215}

1977/12/19 Improved Mounting Base For Air Compressor{1065}

1977/12/19 New 5P7450 Torque Multiplier For Torque Applications Up To 1500 LB FT (2030 N·m){0614}

1977/12/19 Maintenance Instructions For Coolant Conditioner Elements{1350}

1987/01/05 New Water Temperature Regulators Available {1355}

1987/01/19 Difference Between Alternator Indicator In Electronic Monitoring System (EMS) And Low Voltage Indicator In Operating Monitoring System (OMS){7490,7450}