More Bolts Hold Flywheel Housing Group{1157,1162}
Usage:
All 6.25 Bore 6 Cylinder Engines
Description of Change: A new flywheel housing assembly, a new timing gear housing assembly, and two new gaskets are used on the above engines. These parts use more bolts to hold the housings together and to hold both housings to the cylinder block. When the former parts were used, gaskets were some times damaged by a shift in position of the housings. The added bolts hold the housings tighter and in the correct position.
Adaptable To: The new parts are direct replacements for the former parts on earlier models. The new housing assemblies can be used with former cylinder block assemblies. When the new parts are used with former parts, there is no advantage because the extra bolts can not be used.
Caterpillar Information System:
1977/08/29 Anti-Corrosion And Break-In Coatings{0374,3256}
1977/08/29 Engine Valve Springs Are Now Made Of Stronger Steel{1108}
1977/08/29 New Tube Assemblies For Turbocharger Oil Lines; New Base Assemblies For Oil Filters{1052,1306,1307}
1977/08/29 Improved Cylinder Block With Spacer Plates Used With Improved Cylinder Heads And Cylinder Head Gaskets{1101,1201,1221}
1977/08/29 New Clutch Groups Used In Front Power Take-Offs; Service Kits Available{3055}
1977/08/22 Installation Of Generator Sets On Rigid Bases{4450}
1977/08/22 Problems With Oil Or Fuel Filters{1261,1318}
1977/08/22 Be Sure To Drain Oil In BrakeSaver At Every Lubricating Oil Change Period{1155,1300}
1977/08/22 Improved Coolant Seal For Connection Between Cylinder Heads{1100,1350}
1977/08/22 Tools Now Available To Ream And/Or Hone 0.500" (12.70 mm) Diameter Valve Guides{0663}
1977/08/22 New Main And Connecting Rod Bearings Are Made Of Higher Strength Material{1230}
1977/08/15 Tools From Caterpillar To Test And Charge Air Conditioners And For Repair Of Frigidaire Compressors{7320,0651}
1977/09/05 Installation Procedure For Crankshaft Wear Sleeves Changed{1202,1160,1161}
1977/09/05 Check For Extra Holes In Crankshaft Flange If Oil Leaks From Between The Flywheel And Crankshaft Flange{1156,1202}
1977/09/05 Field Repair Of Cooler Cores Made Of Aluminium{1063,1374,1375}
1977/09/12 The Discrepancy Card Has Changed{0374}
1977/09/12 New Refrigerant Compressors And Kits With Improved Seals; Conversion Of Earlier Units{7320}
1977/09/19 Changes To The Injection Pump And The Fuel Setting{1251,1257}
1977/09/19 Use Viscous (Fluid) Type Crankshaft Vibration Damper In Place Of Rubber Type Damper{1205}
1977/09/19 Stronger Piston Is Used; Piston And Connecting Rod Are Tapered In Area Of Piston Pin{1213,1214,1218}
1977/09/26 Use Correct Contact Point With Dial Indicator To Be Sure Of The Accuracy Of The Measurements Of Fuel Setting And Fuel Ratio Control Setting On Sleeve Metering Fuel Systems{0653,1250}
1977/09/26 Stronger Fan Drive Pulley Prevents Cracks During Assembly; Torque On Pulley Bolts Changed{1359}
1977/09/26 New Special Instruction Gives General Information On The Use Of The 5P6590 Wiring Harness Tester For Electrical System Testing{0650,1400}
1977/10/03 Change Is Made to Support Beam For Front Of Engine{0643}