New Top Piston Ring Improves Wear Resistance{1215}
Usage:
3512, 3516 Spark-Ignited Engines
Description of Change: A new top piston ring is used in the 3512 and 3516 Spark-Ignited Engines. The new plasma coated piston ring provides improved wear resistance at high temperatures.
Adaptable To: The new 7E7581 Plasma Coated Piston Ring is a direct replacement for the former 2W8797 Chrome Coated Piston Ring. The new piston ring is effective with 3512 (4KC147), 3516 (3RC196) Spark-Ignited Engines.
Caterpillar Information System:
1991/01/28 Special Instruction SEHS9298 Gives Installation And Maintenance Information For Gaseous Fuel Filters{1261,1262}
1991/01/28 New Bracket Assemblies Used In Lifter Group{1209,1281}
1991/01/14 New Battery Load Tester Available To Service Six, Eight, And 12 Volt Batteries{0785,1401}
1991/01/14 Air Compressor Manifolds Are No Longer Available{1803}
1991/01/14 4C8753 Extended Collet Available; Problems With 8T1002 Probe For Fuel Setting{0782}
1991/01/07 New Boost Line Hose Assemblies Withstand Higher Temperatures{1081,1057,1088,7554}
1991/01/07 Checking Crankshaft Journal Surface Hardness On Remanufactured Crankshafts{1202}
1990/12/24 New Tube And Bracket Provide Clearance For Alternator{1380,1405}
1990/12/24 Auxiliary Oil Filter Groups Used To Increase Oil Capacity And Extend Oil Change Interval To 750 Hours{1318,7534}
1990/12/24 Oversized Intake And Exhaust Valve Seat Inserts Available For Spark-Ignited Engine Heads{1103}
1990/12/24 New Seals Available For Parts Service Of Noncurrent Water Lines Group{1380,1155,1378}
1990/12/24 New 3E0020 Vehicle Speed Buffer Used{1914,1900}
1991/01/28 Be Sure To Check Inlet Valve Rotocoils After An Engine Overspeed{1109,1105}
1991/02/11 New Sleeve-Type Bearings Give Better Carburetor And Governor Control{1265,1266}
1991/02/11 New Altronic V Magneto Used{1552}
1991/02/11 New Water Temperature Regulator{1355}
1991/02/18 Be Sure To Remove All Air From The Fuel System On A Truck That Has Run Out Of Fuel, Had The Fuel Filter Changed, Or Had The Governor Removed{1250,1256,1261,1264,1274}
1991/02/18 New Front Crankshaft Seal Used{1160,1202}
1991/02/25 Crankshaft Wear Sleeve Has Smaller Inside Diameter{1160,1161}
1991/02/25 New OR3231 Remanufactured 3208 Truck Engine Available{1000,7754}
1991/03/04 Standard Duty Air Cleaners Used Instead Of Light Duty (Clamp-On Style) Air Cleaners For Direct Attachment Usage{1051}
1991/03/11 New Recommendations For Lubrication, Maintenance, And Adjustment{3055,7520,7521,7527}
1991/03/11 New Rotocoil Used In Cylinder Head Group; New Valve Stem Oil Shield Used In Locomotive Engine Cylinder Head Group{1109,1100}
1991/03/11 1U5269 Mirror Tube Used With 1U5268 Borescope May Become Scratched{0777}