1998/02/01 Caterpillar

New Exhaust Fitting Assembly Improves Reliability For Exhaust Bellows {1061}

Usage:

3606 (8RB),
3608 (6MC, 8LL, 7WR),
3612 (9RC),
3616 (1PD) Industrial;
3616 (1FN) Marine;
G3606 (3XF),
G3608 (4WF),
G3612 (1YG),
G3616 (4CG) Engines

Description of Change: New exhaust fitting assemblies have replaced former exhaust fitting assemblies on the above 3600 Engines. A typical exhaust fitting assembly is shown in Illustration 1. The new design on the exhaust fitting assemblies eliminates the need for gaskets. Refer to Illustration 2 and Illustration 3 for the design of the new and former exhaust fitting assemblies, respectively. As the result, the flanges on the assemblies are not welded which improves the reliability of the exhaust bellows.

Adaptable To: The new 148-0639 Exhaust Fitting Assembly is a direct replacement for the former 2W-7888 Exhaust Fitting Assembly. The new 148-0640 Exhaust Fitting Assembly is a direct replacement for the former 7E-0873 Exhaust Fitting Assembly. Both former assemblies have been canceled.

The new exhaust fitting assemblies are effective with the engine serial numbers shown in the chart.

Illustration 1:
Typical Exhaust Fitting Assembly. See Detail A in Illustrations 2 and 3.

(B) Front view.

(C) Right side view.

Illustration 2: (DETAIL A).
Typical New Exhaust Fitting Assembly.

(D) Replaces former gasket.

(E) No weld.

Illustration 3: (DETAIL A).
Typical Former Exhaust Fitting Assembly.

(F) Weld location.

Caterpillar Information System:

1998/02/01 Be Sure To Consider Combustion Air Content When Assessing Air Induction System Damage {1051,1058,1063,1087}

1998/02/01 Replacement Labels Available For Contactors {0653,7400}

1998/02/01 3600 Diesel Marine Monitoring System Owner's Manual Available {0374}

1998/02/01 1997 3600 Diesel Technical Communicators Conference Participant's Guide Available {0374}

1998/02/01 Breather Group Tee Hose And Elbow Hose Made From More Heat Resistant Material {1317}

1998/02/01 New Shut-Off Solenoid Group And Air Shut-Off Group Used In Air Shut-Off Groups {1078}

1998/02/01 Installation Of Sleeve Bearing In Cluster Gear Assembly In Front Gear Group {1206}

1998/02/01 New Seal Between Front And Rear Stator Housings {1552}

1998/01/20 Gas Engine Fuel Specifications {1280}

1998/01/20 New Stud And Nut Replace Unit Injector Hold Down Bolt In Fuel Injection Pump Group {1290}

1998/01/20 Cleaning Exhaust Manifolds On 3600 Engines Operating On Heavy Fuel Oil {1059}

1998/01/20 Final Adjustment For Hydrax Controlled Exhaust Bypass (Wastegate) Group {1057}

1998/02/01 Aftercooler Core Performance Measurement {1064}

1998/02/01 New Air Shut-Off Group Provides Increased Serviceability And Reliability {1078}

1998/03/01 Use 126-7175 Push Puller Assembly For Various General Purpose Applications{0600}

1998/03/01 Use 1U-9500 Flow Communicator On Caterpillar Diagnostic Tools{1250,0782}

1998/03/01 Replacement Available For 7M-7260 Liquid Gasket{0648,0649,0651}

1998/03/01 Replacements Products Available For 4C-4079 Brake And Component Cleaner{0680}

1998/03/01 8N-4617 Air Cleaner Clamp Kit Available{1051}

1998/03/01 Caterpillar Electronic Technician (ET) Training Video Available{0374}

1998/03/01 Improved Governor Raise/Lower Motor Used In Governor Control Groups{1264}

1998/03/01 New More Efficent Turbocharger And Exhaust Bypass Group For The G3406 Low Compression Ratio Gas Engines{1057,1052}

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 Piston Cooling Jet Tube Assembly Provides Increased Piston Clearance{1331}