New Relief Valve Guide Used In Oil Pump Groups {1304}
Usage:
3204 Engines
Description of Change: A new relief valve guide is used in oil pump groups used in 3204 Engines. See the illustration. When compared to the former guide, the new guide has relocated larger diameter bypass holes which will lower the maximum oil system pressure. This will help prevent possible oil filter damage from excessive oil pressure during cold engine starts.
Adaptable As: The new 7W239 Guide is a direct replacement for the former 7W2219 or 1N3234 Guides in the 4W9975, 2W2833, 7C5300, 7C6503 and 2W6697 Oil Pump Groups used on 3204 Engines. The former 7W2219 and 1N3234 Guides are canceled.
Location of new relief valve guide in oil pump group.
Caterpillar Information System:
1987/06/15 New 1U5230 Hand Pump (General Purpose Hydraulic) Available {0646}
1987/06/15 New 1U5752 Retainer Tool Available To Service Hydrostatic Transmissions {0721}
1987/06/15 1U5495 Latch Group Available For Earlier Large Duo-Cone Seal Installers {0700,4052}
1987/06/15 New Face Films For Electronic Monitoring System (EMS) Panels {7490}
1987/06/15 Caterpillar Original Equipment Paint Products (U.S. And Canada) {7559}
1987/06/01 Exhaust Manifold Thermocouple Has Longer Insulated Leads {1050,1408}
1987/06/01 Features And Servicing Of The Various Caterpillar 3161 Governors {1264,1278}
1987/06/01 Fuel Injector Trim Bolt {1257}
1987/06/01 Remanufactured Programmable Electronic Engine Controls (PEEC) {1250}
1987/06/01 Use Correct Pistons And Rings For 3406B Truck Engines {1214,1215}
1987/06/01 Use Only Paint To Mark Connecting Rod Caps For Torque-Turn Method {1218,1219}
1987/05/25 Truck Performance Diagnostic Guide Available{0374,1219,1227}
1987/06/15 All Three Main Bearing Part Numbers Stamped On Lower Portion Of Standard Size Bearing {1203}
1987/06/15 Use Of Crankshaft Seal Adapter Eliminated {1150,1160,1161}
1987/06/29 Recommendations For Reusability Of Pistons With Crater Rim Cracks{1214}
1987/06/29 New Water Pump Group Used{1361}
1987/06/29 Check For Shipping Plugs On The Inside Of New Pistons{1214}
1987/07/06 Testing Connecting Rod Eye Bushings When Overhauling Engines{1218}
1987/07/06 New Cylinder Head And Spacer Plate Gaskets Prevent Oil Leakage Around Gear Pocket{1101}
1987/07/06 Silicone Rubber Water Seals Available{1100}
1987/07/06 High Alloy Cylinder Head Improved{1101}
1987/07/06 3400 Engine Major Component Performance Guide Available{0374}
1987/07/06 New Power Takeoff Groups Used; New System Gives Better Face And Bore Runout On Front Power Takeoff Adapters{3050,3107}
1987/07/06 New Sealant Used On Oil Pan Mounting Bolts{1201,1302}