1999/09/01 Caterpillar

New Water Temperature Regulators Used In Temperature Regulator Groups{1355}

Usage:

3606 (8RB),
3608 (6MC),
3612 (9RC),
3616 (1PD),
G3606 (3XF),
G3608 (4WF),
G3612 (1YG),
G3616 (4CG) Engines

Description of Change: New water temperature regulators are used in the temperature regulator groups on these engines. The new water temperature regulators use a stainless steel piston guide while the former water temperature regulators use a brass piston guide.

Adaptable To: The chart identifies the new and former water temperature regulators and which temperature regulator groups and engines they are used in. The new water temperature regulators are effective with 3606 (8RB755), 3608 (6MC609), 3612 (9RC314), 3616 (1PD361), G3606 (3XF214), G3608 (4WF141), G3612 (1YG181) and G3616 (4CG150) Engines.

NOTE: Caterpillar recommends changing the water temperature regulators after 8,000 service hours for Diesel Engines and 10,000 service hours for Gas Engines.

Caterpillar Information System:

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

1999/09/01 New Rod Ends With Increased Temperature Rating Used In Exhaust Bypass Groups{1057}

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 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}

1999/10/01 Identification Of Compatible Engine Oil Differential Pressure Sensors {1924}

1999/11/01 138-8440 Component Cleaner May Damage Electrical Connectors {0644}