1999/09/01 Caterpillar

New Rod Ends With Increased Temperature Rating Used In Exhaust Bypass Groups{1057}

Usage:

G3606 (3XF),
G3608 (4WF),
G3612 (1YG),
G3616 (4CG) Engines

Description of Change: New rod ends with increased temperature rating are used in exhaust bypass groups. The new rod ends can withstand higher temperatures found near the wastegate and will provide improved reliability.

Typical Exhaust Bypass Group (Wastegate) linkage.

New 173-7476 Rod End (right hand thread) (1).

New 173-7477 Rod End (left hand thread) (2).

Adaptable To: The new 173-7476 (1) and 173-7477 (2) Rod Ends are used in the 116-4632, 140-7520, and 145-5656 Exhaust Bypass Groups (Wastegate) on these engines. The new 173-7476 and 173-7477 Rod Ends replace the 8C-7315 and 8C-7321 Rod Ends respectively, at the locations shown in the illustration. The new rod ends are effective with G3606 (3XF214), G3608 (4WF141), G3612 (1YG179), and G3616 (4CG155) Engines.

NOTE: In addition to the new upper 173-7476 Rod End (1), Caterpillar also recommends the use of the 170-1068 Exhaust Manifold Shield Assembly to provide additional wastegate rod end heat protection.

Caterpillar Information System:

1999/09/01 Tightening Torque Increased For Nuts In Fuel Injector Wiring Harness Cap Assembly{1408}

1999/09/01 Summary Of Improvements To Deep Sump Oil Pans{1302}

1999/09/01 Service Repair Kits Available For Deltec® Gas Pressure Regulators{1270}

1999/09/01 Improved Woodward EG3P Actuator Assembly Is Available{1264,1265,1716}

1999/09/01 Front Gear Group Changed To Help Keep Oil Pump Adapter Assembly Bolts Tight{1206,1304}

1999/09/01 New Rear Gear Group Available For Use In Landfill Applications{1206}

1999/09/01 Be Sure To Use The Correct Procedure To Remove The Rear Crankshaft Seal And Wear Sleeve{1161}

1999/09/01 New Electronic Control Module For 3408E And 3412E Engines{1901}

1999/09/01 New Gasket Allows Easier Spark Plug Service{1555}

1999/09/01 New Caterpillar Digital Ignition System Provides Improvements Over Magneto Systems{1550,1552}

1999/09/01 Wider Crankshaft Gear Used{1204}

1999/09/01 Engine Control For Dynamometer Or Diagnostic Testing{1000}

1999/09/01 New Connecting Rod Bolt Tightening Procedure{1218}

1999/09/01 New Water Temperature Regulators Used In Temperature Regulator Groups{1355}

1999/09/01 New Seal Kits Available For Servicing Heat Exchangers{1379}

1999/09/01 Procedure For Replacing The 124-4596 Exhaust Port Thermocouple And 124-4598 Turbocharger Inlet And Exhaust Thermocouple In The Mounting And Electrical Sensor Groups{7498}

1999/10/01 New Water Pump Group (Basic) Includes Many Improvements {1361}

1999/10/01 Be Sure To Use The Correct Piston Cooling Jet Tube Assembly With Gallery Cooled Pistons {1331}

1999/10/01 Revised Maintenance Schedules For 3500 Diesel Commercial Engines {0374,1000}

1999/10/01 Corrections For Operation & Maintenance Manual, SEBU6966-02, "3600 Heavy Fuel Engines" {0374}

1999/10/01 New Method To Determine When To Clean The Aftercooler Core {1064}

1999/10/01 New Lever In Governor Group Provides Improved Control {1265}

1999/10/01 New Bearings In Fuel Injection Control Housing Provide Improved Service Life {1298}

1999/10/01 Hardened Rod End Bearings Provide Improved Reliability {1298}