Use Correct Parts In Oil Pressure Relief Valve{1315,1304}
Usage:
All D346 Engines
NOTE: Put a mark through the article "Use Correct Parts In Oil Pressure Relief Valve," on page 4 of the August 10, 1981 Service Magazine and make a reference to this article which has more information.
There have been reports of the wrong assembly of the oil pressure relief valve in the oil pump assembly on D346 Engines. Some servicemen do not know which parts to use with the different oil pump assemblies. The correct parts of the relief valve are shown in the charts.
Caterpillar Information System:
1981/08/31 Thrust Washer Used In Pump Housing For Sleeve Metering Fuel System{1253,1286}
1981/08/31 6V3100 Diesel Timing Indicator Group Available To Check Engine/Fuel System Timing And Mechanical Advance During Operation{0653,1206,1156}
1981/08/31 FT1632 Bolt Used During Removal Of Sleeve From Sleeve Metering Fuel System{0621,1251,1253}
1981/08/24 Use Of Different Anti-Seize Compound Prevents Problems With S.O.S. Tests{0680,1203,1218,1219,1225,1226,1227,1230}
1981/08/24 Troubleshooting The Fuel Ratio Control Group For Low Power Complaints{1278}
1981/08/24 New Idler Pulley Groups Improve Service Life Of Vee-Belt{1358}
1981/08/17 Comparison And Applications Of Six And Eight Counterweight Crankshafts{1202,1156}
1981/08/17 O-Ring Seal Materials And Applications: Use Only The Correct Seal For The Specific Installation{7555}
1981/08/17 Plastic Plugs Now Used To Hold Piston Pins In Bendix Air Compressors{1065}
1981/08/17 Improvements To Optional Modification Of 5P4150 Nozzle Tester{0651,1254}
1981/08/17 New Spanner Wrenches Needed To Install Bearings On Marine Transmission Shafts{0622,3300}
1981/08/17 Standard Interval For Oil Changes Now 20,125 Kilometers (12,500 Miles) Or 250 Service Hours{1318}
1981/09/07 Plates Can Be Fabricated For Removal Of Spherical Bearings From Hydraulic Cylinders{0651,0623}
1981/09/07 Use Hardware Rack To Keep Small Parts Together During Engine Disassembly And Assembly{0633}
1981/09/07 New Exhaust Gas Recirculation Solenoid Used{1080}
1981/09/07 One-Piece Panel Used For Oil Pan Sound Suppression{7260,1801,1302}
1981/09/07 New Support Prevents Vibration Of Left Side Oil Filters{1306,1318}
1981/09/14 New High Pressure Quick Disconnect Couplers And Nipples For Hydraulic Test Equipment {0651}
1981/09/14 Updated, Improved Issue of Special Instruction, "Bench Testing Hydraulic Components," Now Available {0374,5050}
1981/09/14 Changes To BrakeSaver Groups Give Longer Service Life {1155}
1981/09/14 Troubleshooting: Water Pump Failures {1361,1350}
1981/09/14 Exhaust Manifold And Air Lines Changes Prevent Broken Studs And Exhaust Leaks {1059,1061}
1981/09/14 Timing Pin Removed From Governor And Fuel Injection Pump Group; Change To Service Manuals {1286}
1981/09/14 Low Idle Instability: New Low Idle Setting {1264}