Spark Plug Gasket Available{1550,1555}
Usage:
G398 Low Emission, G399 Low Emission, 3512, 3516 Spark-Ignited Engines
For some time, the above engines have been using a 9Y2602 Spark Plug, which is a J-gap plug that can be regapped. A new plug gasket should be installed each time this plug is reused. This gasket is now available under the part number "9Y6792".
This gasket can also be used on the former 9Y9475 or 7W2257 Spark Plugs, which are surface gap plugs.
Caterpillar Information System:
1989/11/20 Effective Dates, Serial Numbers and Features Of PEEC Personality Modules{1705,1707}
1989/11/13 Cylinder Liner Changes{1216}
1989/11/13 New Gasket With Stainless Steel Flange Used In Exhaust Manifold Group{1059}
1989/11/13 New 3161 Marine Governor Provides Better Low Idle Stability{1264}
1989/11/13 Engine Coolant Can Be Recycled{1395}
1989/11/06 Use Correct Calibration Pin (1U9786) When Calibrating Governor; Do Not Use 1U7305 Insertion Tool{0706,0782,1264}
1989/11/06 Different Thread Lubricant Can Be Used On Connecting Rod, Main Bearing Cap And Counterweight Bolts{1203,1225,1231}
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}
1989/11/27 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}
1989/12/11 4C4213 Insulation Tester for Electrical Power Generation{0785}
1989/12/11 Additional Information For Checking Valve Camshaft Timing{1105,1110,1112,1121}
1989/12/11 New Camshaft And Lifter Kits Available For Slipper Type Cam Followers (Valve Lifters){1209,1210}
1989/12/11 New Spark Plug Used In Ignition Groups{1555}
1989/12/11 Modification Of 2W1054 Screen Assembly For Use During Dynamometer Testing{1307}
1989/12/11 Cooling System Drain Valves Available{1372}
1989/12/18 Paper Liner Available For Centrifugal Oil Filters{1328}