New Teflon Coated 4P9388 Cylinder Seal Available{1216}
Usage:
Challenger 75 ( 4CJ ) Tractor;
3176 ( 2YG, 7LG ) Truck Engines
Description of Change: A new teflon coated cylinder liner seal is available. The new seal can and should be installed dry. The former seal had to be lubricated with a 50/50 mixture of antifreeze and water for installation.
Location of cylinder liner seal.
Adaptable To: The new 4P9388 Cylinder Liner Seal is a direct replacement for the former 9Y7043 Cylinder Liner Seal. The former seal is canceled. However, 9Y7043 Cylinder Liner Seals in parts stock can and should be used.
Caterpillar Information System:
1991/10/14 New Locking Bolt Used In Flywheel Groups{1156}
1991/10/07 New SR 4 Generator Rewind Data Available{4450}
1991/10/07 Assembly Procedure For Duo-Cone Seals Changed{7561,0645}
1991/09/30 New Piston Crown And Piston Skirt Used In Basic Piston Group; New Cooling Jet Used In Cylinder Block Group{1214,1331}
1991/09/30 Use 7E5888 Fuel Injection Pump Housing As A Service Replacement For Pre 1991 Fuel Injection Pump Housings{1253}
1991/09/30 Air Filter Maintenance{1051,1054}
1991/09/30 Compression Ratio Increased On Remanufactured OR1094 & OR1095 Engines To Reduce Amount Of White Smoke On Cold Weather Start-Ups{1000,1254,1290}
1991/09/30 "Off-Size" Bearing Kits Available For Parts Service{1052,7551}
1991/09/30 Updated List Of Charts And Decals Available For Lubrication And Maintenance Intervals{0374,0375,7500,7557,7581}
1991/09/30 Excessively Long Bucket And Ripper Tips May Cause Failures{6800}
1991/09/23 New Auxiliary Water Pump Groups Used{1371}
1991/09/23 New Pickup Assembly In Sump Pump Group Attachment Removes More Oil From Oil Pan{1324,1302}
1991/10/14 New Components Used In Fuel Injection Pump Groups{1290}
1991/10/14 7S3161 Valve Lifter Has Three Different Designs{1209}
1991/10/14 No Gaskets Used With Aluminum Flywheel Housings{1157}
1991/10/14 New Piston Pin Retainer Used{1225}
1991/10/14 End Clearance Specification Changed For Front Shaft In Fuel Injection Control{1251,1258}
1991/10/21 New Oil Pump Used As Service Replacement {3310}
1991/10/21 How To Repair Oil Leaks Between Front Housing And Spacer Deck {1221}
1991/11/11 Computerized Monitoring System (CMS) Has Improved Electrical System Monitoring{7400}
1991/11/18 New Auxiliary Water Pump Groups Used{1371}
1991/11/25 Improved 6P3236 Fan Switch{7300,7316,7332}
1991/11/25 New Turbocharger Turbine Nozzle Provides Higher Boost And Lower Exhaust Temperatures{1052}
1991/11/25 New Spider Assembly Used In Fan Groups{1356}