1998/03/01 Caterpillar


Stainless Steel Instrument Lines Groups Improved{7451}

Usage:


3606 (8RB),
3608 (6MC),
3612 (9RC),
3616 (1PD) Engines

SUPPLEMENT: JULY 1998

Engine News SEBD9258, Article 19, Page 15, March 1998; "Stainless Steel Instruction Lines Groups Improved".

On Page 15, in the chart titled "(FOR INLINE 3606 RH AND LH USE ONLY) Former 7C-1191 and NEW 143-7517 Oil Mister Pump Lines Groups", the last part number in the "Former Part No." column, 7K-1775, is NOT correct. The correct part number is 7C-1775.

On Page 20, in the chart titled "VEE 3612 & 3616 RH & LH) Former 4P-6995 and New 154-1690 Vee Blended Fuel LH", the last part number in the "New Part No." column, 145-3065 is NOT correct. The correct part number is 154-3065.

--------------- END SUPPLEMENT ---------------

The following charts show changes that have been made to the Stainless Steel Instrument Lines Groups in the above engines. All of the changes involve tube assemblies which have been replaced in the listed groups. Not all of the former part numbers identified in the charts have been canceled because of other usage.

The new stainless steel lines are harder than the former lines. The clips and/or clamps which have been added are softer than previous designs. These changes will cause wear to occur at the clip or clamp rather than to the lines. Hoses have been added to some of the lines groups. These hoses will resist vibration damage and allow for some misalignment.

Caterpillar Information System:

1998/03/01 Metal Particle Detector{7400}
1998/03/01 Current Woodward EGB29P Actuator Assemblies Used On 3600 Diesel Engines{1716}
1998/03/01 New Exhaust Valve Used In Cylinder Head Groups{1105}
1998/03/01 A New Chrome Plated Steel Thrust Washer Is Used In The Air Lines Groups{1058,1079}
1998/03/01 Air Quality Requirements For Turbocharger Air Impingement System{1052}
1998/03/01 The Ignition Bulkhead Connector Reoriented To Help Prevent Moisture Damage{1408}
1998/03/01 Process Changes Result In Improved 3500 Engine Remanufactured Connecting Rod Assembly{1218}
1998/03/01 New Pump Group Used In Auxiliary (Fresh Water) Pump Group For Separate Circuit Aftercooler (SCAC){1371}
1998/03/01 New Piston Cooling Jet Tube Assembly Provides Increased Piston Clearance{1331}
1998/03/01 Be Sure To Use The Correct Inlet And Exhaust Valves In Engines Equipped With Valve Bridges That Do Not Ride On Dowels{1105,1121}
1998/03/01 New More Efficent Turbocharger And Exhaust Bypass Group For The G3406 Low Compression Ratio Gas Engines{1057,1052}
1998/03/01 Improved Governor Raise/Lower Motor Used In Governor Control Groups{1264}
1998/03/01 New Control Panel Films For SR4B Generators Which Are Not To Be Used In Delta Connection{4450}
1998/03/01 Improvement To Reduce Incidence Of 190-02 Diagnostic Code On Electronic Modular Control Panel II (EMCP II) Or Electronic Modular Control Panel II+ Equipped Generator Sets{4490}
1998/04/01 Lower O-Ring Seal Removed From Mechanical Fuel Injector Group{1290}
1998/04/01 Stronger Injector Hold Down Bolt Used In Fuel Injection Pump Groups{1290}
1998/04/01 New Coolant Hose For Exhaust Bypass Valve{1380,1057}
1998/04/01 New Improved Inlet Manifold (Flame Arrestor) Gasket{1058}
1998/04/01 New Debris Shield Is Added To Cylinder Head Gasket Kits{1124}
1998/04/01 New Components Used In Crankcase Breather Group Help Prevent Oil Leaks{1317}
1998/04/01 New Improved Thermostat Housing Seal{1355}
1998/04/01 New Improved Jacket Water Temperature Regulator For Landfill Applications{1355}
1998/04/01 New Spark Plug Recommended For G3500 Engines{1555}
1998/04/01 New Electronic Control Module (ECM){1901,1900,1920}
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