1979/05/07 Caterpillar

Change In Part Number Of Water Temperature Regulator Used In Attachment Oil Cooler Groups{1355,1378}

Usage:

D398, D399 Industrial Engines

Description of Change: A different part number is now used for the water temperature regulator in attachment oil cooler groups for D398 and D399 Industrial Engines. The regulator specifications are not changed, but the former part number regulator was made by either of two different manufacturers (factories). While the specifications were the same, the two different products had different characteristics of operation, and test showed that one regulator held a more even temperature in the oil cooler than the other. For this reason, a new part number is released for regulators made by a single manufacturer. This regulator will prevent stresses caused by temperature changes in the oil cooler, and will extend the service life of the oil cooler.

Adaptable As: The new 5N6242 Water Temperature Regulator is a direct replacement for the former 9S9160 Water Temperature Regulator in attachment 3N9189 and 3N9378 Engine Oil Cooler Groups (Sea Water). The former 9S9160 Water Temperature Regulator is still available for use in other applications.

Caterpillar Information System:

1979/05/07 Part Numbers Of Bearings To Use For Service Replacement In Fuel Injection Pump Housings For Sleeve Metering Fuel Systems; Correction To Special Instruction For Installation.{1253}

1979/05/07 New Hose Assembly Will Give Longer Service Life With High Oil Temperatures{3314}

1979/05/07 New 6V116 Water Sleeve Removal Tool Is Available{0621,1101}

1979/04/30 New Design Exhaust Gasket Used In Air Lines Group{1061}

1979/04/30 Liner Seat Insert Now Available{1217}

1979/04/30 Improved Gasket Now Used Between The Flywheel Housing And The Cylinder Block{1157,1201}

1979/04/30 Seals (Double-Lip Type) Made Of Viton Material Are Now Used In Vickers Pumps Which Have Steel-Backed Bronze Plates Between Rotor And End Plates{5055}

1979/04/30 New Ring Gears Used In Flywheel Assemblies{1158}

1979/04/30 The Service Life Of A Power Shift Transmission Is In Direct Relation To The Maintenance Of Its Lubrication System{3004,3179,3150}

1979/04/30 2P8316 Dowel Now Available For Parts Service{0652}

1979/04/30 New " Drive 6V94 Universal Joint Is Available{0612,1253}

1979/04/23 Dowtherm Test Strips No Longer Available{0651,1350}

1979/05/07 An Ammeter Calibration Group Is Now Available{0651}

1979/05/07 New Oil Pump Has Improved Relief Valve For Better Pressure Control{1304}

1979/05/07 Serialized Attachments Added To Machine Parts Books{0375}

1979/05/14 New BrakeSaver Manifold Prevents Oil Leakage{1155}

1979/05/14 How To Adapt The 5P1759 Tachometer Drive Group (Dealer Tool) To D9H Tractors, 594H Pipelayers And D353 Engines Equipped With Electric Hour Meters When Engine RPM Must Be Checked{0654}

1979/05/14 5P3519 Piston Ring Gauge Has Improved Design For Better Accuracy And Easier Use; Corrected Information For Use On Pistons That Have Two Ring Grooves{0653,1214}

1979/05/14 New Filler Bands Give A Better Seal Between The Cylinder Liners And Cylinder Block{1201,1216}

1979/05/14 Two Fuel Pressure Pumps Are Available To Increase Fuel Pressure{1250,1295}

1979/05/21 Shorter Mounting Bolts Used For Glow Plug Wiring{1403,1412}

1979/05/21 New Flywheel Housing Corrects Clearance Problem With Cylinder Block{1157,1158,1201,1453}

1979/05/21 Do Not Use Later 9N3979 Nozzle Assemblies In Plate Of Earlier Nozzle Assemblies{1254}

1979/05/21 How To Prevent Cylinder Block Failure From Cracks{1201}