1999/07/01 Caterpillar


New Connecting Rod Bolt Tightening Procedure {1218}

Usage:


3606 (8RB732),
3608 (6MC595, 5PG106, 8LL11, 7WR26),
3612 (9RC291, 9FR21, 2NZ176),
3616 (1PD352, 1FN150) Engines

A new connecting rod bolt tightening procedure went into effect with the above engines. This new procedure should also be used on all earlier 3600 Diesel Engines. Use the illustration as a guide for identification of connecting rod bolts.


Identification of connecting rod bolts.

NOTE: The No. 1 and No. 2 connecting rod bolts are on the same side of the connecting rod as the connecting rod bearing tab slots.

1. Lubricate the connecting rod bolt threads, bolt shank, and nut seating faces of the cap and nut with 6V-4876 Molykote Paste Lubricant.

2. Tighten nut No. 1 and then tighten nut No. 4 to a torque of 300 ± 30 N·m (220 ± 22 lb ft).

3. Tighten nut No. 3 and then tighten nut No. 2 to a torque of 300 ± 30 N·m (220 ± 22 lb ft).

4. Tighten nut No. 3 again and then tighten nut No. 2 again to a torque of 300 ± 30 N·m (220 ± 22 lb ft).

5. Tighten nut No. 3 and then tighten nut No. 2 an additional 180 ± 5 degrees.

6. Tighten nut No. 1 again and then tighten nut No. 4 again to a torque of 300 ± 30 N·m (220 ± 22 lb ft).

7. Tighten nut No. 1 and then tighten nut No. 4 an additional 180 ± 5 degrees.

Caterpillar Information System:

1999/07/01 New Piston Assembly Used {1214}
1999/07/01 High Performance Aftercooler (HPAC) Parts Kits Available {1063}
1999/07/01 Worldwide Listing Of ABB Turbocharger Service Stations {1052}
1999/07/01 Operation And Maintenance Manual For 3600 Diesel Marine Monitoring System Has Been Revised {0374,7490}
1999/07/01 "Guidelines For 3600 Heavy Fuel Oil (HFO) Engines" Has Been Revised {0374,1000}
1999/07/01 O-Ring Seals Included On Terminal Assembly For The Electronic Ignition System (EIS) Transformer Group {1561}
1999/07/01 Be Sure The Cylinder Head Bore For the Unit Injector Is Clean When the Unit Injector Is Replaced {1290}
1999/07/01 New Fuel Priming Pump Assemblies Used {1258}
1999/07/01 New Basic Fuel Transfer Pump Group Includes New Outer Lip Type Seal {1256}
1999/07/01 New Position Sensor Group (Throttle) {1913}
1999/07/01 New Stronger Bolts and Washers Help Prevent Oil Leaks At Rear Power Take Off (RPTO) Flywheel Housing To Block Joint {1157}
1999/06/01 New Voltage Sensing Transformer Improves Reliability {4477}
1999/07/01 Follow Fuel Changeover Procedure Before Synchronizing Fuel Injectors On Heavy Fuel Oil (HFO) Engines {1250,1274,1280,0374}
1999/07/01 Risks Of Extended Oil Change Interval Practices {1300}
1999/07/01 Centrifugal Oil Filter Group Revised To Allow Higher Operating Pressures {1328}
1999/07/01 A New Control Assembly (XYCOM Monitor) Is Used In The Marine Monitoring System (MMS); Special Instruction With Procedure For Replacing The Former Control Assembly With The New Control Assembly Available {1901}
1999/07/01 Marine Monitoring System (MMS) Thermocouple Wiring Color Codes {1906,1919,1921,1922,1929,7498}
1999/07/01 An Improved Watertight Junction Box Assembly And Watertight Electronic Box Groups Are Used {7426,7490,7555}
1999/08/01 Caterpillar Service Technology Group (CSTG) Software Help Desk Changes{1920}
1999/08/01 New Material Improved Durability For STAY CLEAN VALVE(r) In Caterpillar High Efficiency Fuel Filters{1262}
1999/08/01 Extended Life Coolant - Still the Coolant of Choice{1395}
1999/08/01 New Service Manuals and Revised Service Manuals Available{0374,1000}
1999/08/01 Cold Start Advance Solenoid Available{1272,1250}
1999/08/01 Troubleshooting Hard Starting{1250}
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