1992/08/31 Caterpillar

Be Sure The Fuel Injection Pump Housing Is Compatible With 0R0715 And 0R2545 Remanufactured Short Blocks{1201,1253}

Usage:

3406 Engines

Some 0R0715 and 0R2545 Remanufactured Short Blocks may require a new fuel injection pump housing when used in 3406 engines built before 1975.

In 1975, the 4N0812 Fuel Injection Pump Housing Assembly was canceled and replaced by the 6N7276 Fuel Injection Pump Housing Assembly. This change resulted in a larger oil drain passage from the housing to the cylinder block. The cylinder block was also changed to provide a larger oil drain hole.

The 0R0715 and 0R2545 Remanufactured Short Blocks may be built with either a 7N1200 or 8N9265 Block Casting. If the 8N9265 Casting is used, the short block will not work with a 4N0812 Fuel Injection Pump Housing Assembly. This is because the oil drain seal ring used with this housing will not properly seal the oil drain hole in the block. If this situation occurs, the fuel injection pump housing can be changed or a remanufactured short block with the 7N1200 Block Casting may be located.

Caterpillar Information System:

1992/08/31 New "3406B Engine Instructor Manual" Available{0374}

1992/08/31 New Deutsch HD-10® Electrical Connectors Used{1400}

1992/08/24 New Cylinder Head Group Provides Lower Valve Guide Temperatures {1100,1104,1112,1123}

1992/08/24 Reusability of Exhaust Valves in All Caterpillar Engines {1105}

1992/08/24 New Electronic Unit Injector (EUI) With New Style Solenoid Used; New Unit Injector Wiring Group Used {1290}

1992/08/24 Application Changes For Electronic Unit Injector (EUI) Part Numbers {1290}

1992/08/10 New Carrier Assembly Used In Governor And Fuel Pump Drive Groups {1288,1299}

1992/08/10 Proper Alternator Bench Testing {1405,1400}

1992/08/10 Taller Water Seals Used In Cylinder Head Groups {1115}

1992/07/27 Boxes/Cartons Containing Used Cores Should Be Immediately And Clearly Identified{0661}

1992/07/27 New Hardware Used In Water Lines Group{1380}

1992/07/27 New Engine Control Module For EMCP Now Available{4450,4490}

1992/08/31 Connecting Rod Bearing Eliminates The Need For Mid-Life Connecting Rod Bearing Roll-In{1219,1202}

1992/08/31 Supplemental Coolant Additive Requirements{1352,1395,1063}

1992/09/07 Governor Specifications Are Available Through The Technical Information System{1264,0374}

1992/09/07 Major Engine Component Changes{1201,1202,1205,1218,1219,1230,1253,1288,1331}

1992/09/21 Replacement Mechanical Temperature And Pressure Gauges (Indicators) Retained By Push-On Metal Retainers{7450}

1992/09/21 New Plug And O-Ring Can Help Prevent Oil Leakage At The Flywheel Housing Gasket{1157,1307}

1992/09/21 New Fuel Injection Pump Groups Have Larger Diameter Camshaft Bores, New Lifter Assembly, And Shorter Plunger And Barrel Assembly{1251,1253,1281,1292}

1992/09/28 New Self Locking Bolt Used On Engine Side Covers {1201}

1992/09/28 Service Tools Available {0600,0700}

1992/09/28 New NEXG4516 Marine/Industrial Service Program Module(SPM) Available {1900,0782}

1992/10/05 Thicker Head Gaskets Available For Use With Resurfaced Cylinder Blocks{1124}

1992/10/05 New Cylinder Head Groups Provides Lower Valve Guide Temperatures{1100,1104,1112,1123}