Silicone Water Passage Seal Can Be Used Where Contact With Oil Is Unavoidable During Assembly Of Cylinder Heads{1100}
Usage:
3300 Family Of Engines
Reference: Service Magazine; December 15, 1986; Page 10; "Avoid Oil Contact With New Water Passage Seals used In Cylinder Head Groups" on 3300, 3400, and 3500 Families of engines.
The 4W8087 EPDM Water Seal (red) that is used on the 3300 Family of engines is not compatible with oil. The 9Y1798 Water Seal (yellow) is made of silicone and has a nylon insert. The 9Y1798 Water Seal is available for parts service where contact with oil is unavoidable during cylinder head repair.
Caterpillar Information System:
1988/06/06 Reusability Guidelines For Phosphate/Oil-Coated And Zinc-Plated Fasteners{7553}
1988/06/06 Lubricant Supplements List Specifications For CXP Lubricants{0645,7000}
1988/06/06 Installation Of Valves For Live Oil Sampling{7770,0770,0781,0783,0784}
1988/05/23 New Adapters Have Orifice To Extend Life of Fuel Pressure Gauges{7456}
1988/05/23 New Components Used In Water Lines Groups{1350}
1988/05/23 Ways To Prevent Overcooling Of 3306B (63Z, 76R) Truck Engines{1355}
1988/05/23 New Engine Lifting Bracket Available{0632}
1988/05/23 Larger Capacity Refrigerant Charging Cylinders Available For Charging Air Conditioner Systems{0647,7320}
1988/05/23 Four New Swivel Tee Fittings Can Be Used For In-Line Pressure Testing{0784}
1988/05/23 New 1U9139 Universal Fuel Line Pickup Available{0775}
1988/05/16 9G7641 Start Switch Is Improved{1416,1400}
1988/05/09 New 1U6392 Pressure Reducing Valve Regulates Pressure To Hydraulic Pumps During Bench Testing {0784}
1988/06/13 New Crankshaft Damper Has Rubber Bonded To Hub And Ring{1202,1205}
1988/06/13 Piston Application Guide{1214,1215}
1988/06/13 Additional Information For Installing Fuel Injectors{1290,1257}
1988/06/13 Rotor Shaft Keyways Are Now "{4454}
1988/06/20 Maintenance-Free Batteries Require Different Troubleshooting Procedures{1401}
1988/06/20 Software Upgrade For The 8T5282 Digital Diagnostic Tool (DDT){0600,1250}
1988/06/20 Large Engine Blowby Group Available To Measure Crankcase Blowby And Radiator Air Velocity{0781,1200,1350}
1988/06/20 Two 11 mm Injectors Available For Parts Service{1250,1290}
1988/06/27 Charts And Decals Available For Lubrication And Maintenance Intervals{0370}
1988/07/04 Improvement To 2P5535 Stud Extractor Group {0700,4210}
1988/07/04 New Service Tools Available {0600}
1988/07/04 New 1U8758 Pliers Available For Removing And Installing Large Internal Retaining Rings In Power Shift Transmissions {0603,3150}