1998/09/01 Caterpillar

Be Sure To Heat The Gear To The Correct Temperature When Installing The Crankshaft Gear {1204}

Usage:

3176 (2YG, 7LG),
3176B (9CK),
C-10 (2PN, 8YS),
C-12 (1YN, 9NS) Truck Engines

Reference: Specifications, 3176 Truck Engines, SENR3908, "Crankshafts". Specifications, 3176 (7LG) Truck Engines, SENR5107, "Crankshafts". Specifications, 3176B (9CK1-Up) Truck Engines, SENR5560, "Crankshafts". Specifications, C-10 (2PN) Truck Engines, SENR6592, "Crankshafts". Specifications, C-12 (1YN) Truck Engines, SENR6597, "Crankshafts". Specifications, C-10 And C-12 (8YS, 9NS) Truck Engines, RENR1322, "Crankshafts".

The References INCORRECTLY indicate the crankshaft gear should be heated to a maximum temperature of 316°C (601°F) for installation onto the crankshaft. The CORRECT procedure is to heat the crankshaft gear to no more than 210°C (410°F) for no more than 1 hour prior to installation on the crankshaft. Be sure to make note of this information in the referenced Specifications modules.

Caterpillar Information System:

1998/09/01 Troubleshooting The 5 Volt Sensors {1900,1906,1917,1921,1922,1923,1924,1928}

1998/09/01 New Basic Water Pumps Groups Used In Engine Water Pump Groups {1361}

1998/09/01 "Programming Cat Electronic Truck Engines" Update {1920}

1998/09/01 Flash File Bulletin Board System To Be Discontinued {1920}

1998/09/01 Troubleshooting Reminder For Low Power Or Intermittent Low Power Symptoms {1250,1252,1256,1260,1261,1273}

1998/08/01 Lower O-Ring Seal Removed From Hydraulically Actuated Electronically Controlled Unit Injector (HEUI) Groups{1290}

1998/08/01 Prevention Of Air Cleaner Contamination On 1997 And 1998 GMC T-Series Tilt Cab Trucks Powered By 3116 (8WL, 2CW) And 3126B (7AS) Truck Engines{1051}

1998/06/01 New Flywheel Housing Gasket Used{1157}

1998/06/01 Be Sure To Order The Correct Remanufactured Cylinder Head For 3406E (5EK, 6TS) Truck Engines{1100}

1998/06/01 Individual Parts For The Exhaust Joint Are Now Available{1059}

1998/06/01 "Horton 3-Speed Fan" Feature In Heavy Duty Truck Engine Software (FEB98 Or Later){1356,1920}

1998/06/01 New Water Pump Used{1350,1361}

1998/09/01 New Flywheel Housing Gasket Used {1157}

1998/10/01 New Exhaust Valve With Chrome Plated Stem Reduces Intermittant Exhaust Valve Sticking{1105}

1998/10/01 New Cast Iron Valve Guide{1104}

1998/10/01 New Rocker Arms And Valve Adjusting Screw{1123}

1998/10/01 New Fuel Priming Pump Assembly Used{1258}

1998/11/01 New Full Feature Electronic Control Group [Electronic Control Module (ECM)] Available {1901}

1998/11/01 New Refrigerant Compressor Support Bracket Assemblies Available {1162,1802}

1998/11/01 Be Sure To Use Correct Stub Shaft When Replacing Cam Idler Gear {1234,1212}

1998/11/01 New Cylinder Head, Cylinder Block, Cylinder Head Gasket, And Camshaft Followers {1100,1124,1201}

1998/11/01 Correction To Service Manual For Connecting Rod Bolt Torque {1218}

1998/11/01 Elimination Of One Hold-Down Stud For Jake Brake {1119}

1998/11/01 Elimination Of One Hold-Down Stud For Pac Brake {1119}