Use Correct Torque To Prevent Broken Rocker Arm Shafts{1102}
Usage:
All 3208 Engines
There have been some reports of problems with damaged or broken rocker arm shafts on 3208 Engines. This type of failure is some times caused by too little torque on rocker arm shaft assembly mounting bolts. If the shaft assembly is installed with one or more of the rocker arm adjustment screws in contact with a push rod, the torque indication for the mounting bolts will not be correct.
When the rocker arm shaft assembly is installed, make sure that all valve adjustment screws are loose and are not in contact with the push rods. Tighten the mounting bolts to 24 ± 7 N·m (18 ± 5 lb ft). Adjust valve lash only after mounting bolts have been tightened.
Caterpillar Information System:
1982/06/28 Caterpillar Recommends Against The Use Of Alcohol Mist Injection Systems{1050,1250}
1982/06/28 Explanation For "Notice" And "Warning" In Service Publications{0374,0375}
1982/06/28 Replacement Of Brush Holder Pins In Delco-Remy Electric Starting Motors{1453}
1982/06/28 6V6124 Calibration Coil Available To Calibrate And Check 6V4910 AC/DC Clamp-On Ammeter{0651}
1982/06/21 New Piston Group Has A Thicker Top Ring{1215,1214,1213,1225,1226,1227}
1982/06/21 Different Pipe Plug In Turbocharger Turbine Housing Prevents Contact With Oil Filter{1052,1318}
1982/06/21 Engine Ground Straps Necessary To Prevent Electrical Discharge Damage To Crankshaft Bearings{1202,1203,1400,1405}
1982/06/21 Hose Presses Can Now Be Used To Install JIC Couplings{0623,7554,0624}
1982/06/14 New Address For Repair Of Diagnostic Tools{0650}
1982/06/14 Improvements Made To Input Shaft Group{3303}
1982/06/14 Stronger Turbine Wheel Used In Turbocharger Shaft And Wheel Assemblies{1053,1052}
1982/06/07 Identification Numbers For Caterpillar Partial Machines{0300}
1982/07/05 Water Cooled Turbocharger Now Used{1052,1307,1380}
1982/07/05 New Crankshaft Wear Sleeve For Engines With Lip-Type Seals{1160,1161}
1982/07/05 Information Available For The Installation Of Inserts In Cylinder Blocks And Spacer Plates{1217,1201,0664}
1982/07/05 Service Parts Available For The 6V200 Hydraulic Wrench{0623}
1982/07/05 Decal For Track Press Information Revised{0624,4169,4170,4175}
1982/07/12 New Gear Type Pump Primes Itself At Start-Up{3310,3314}
1982/07/12 New Main And Connecting Rod Bearings Have A Thicker Layer Of Lead-Tin Overlay (Surface Material){1230,1203,1219}
1982/07/12 Excessive Oil Consumption: Check The Accuracy Of The Oil Level Gauge{1302,1316,1318}
1982/07/12 Caterpillar-Built Industrial Engines Available In New Machines{0371,1000}
1982/07/19 New Service Tools: 31 And 55 Ton Center Hole Hydraulic Cylinders And Relief Valve{0623}
1982/07/19 Oil Passage Plugs Are No Longer Installed In Crankshafts For Parts Service{1202}
1982/07/19 Torque Multiplier Changed To Prevent Lock Up Problems{0614}