More Bolts Hold Flywheel Housing Group
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:
1977/08/24 New Adjustment Pin And Valve Seal Used In Fuel Ratio Control
1977/08/24 Improved Cylinder Block With Spacer Plates Used With Improved Cylinder Heads And Cylinder Head Gaskets
1977/08/24 Problems With Oil Or Fuel Filters
1977/08/24 New Main And Connecting Rod Bearings Are Made Of Higher Strength Material
1977/08/10 New Air Inlet Manifold Has Longer Bolt Bosses With More Thread Depth To Keep Bolts Tight
1977/08/10 Tools To Install Crankshaft Seal And Wear Sleeve
1977/07/13 New Inserts To Repair Cylinder Liner Seats On D353 Engine Blocks
1977/07/13 Clean Bolt Holes In Cylinder Block Before Cylinder Heads Are Installed
1977/07/13 Baffle Added To Water Pump Cover To Send Coolant In Bypass Line Directly Into The Water Pump
1977/07/13 New Seal For Crankshaft
1977/07/13 Use New Procedure To Tighten Flywheel Housing Bolts
1977/07/13 Correct Adjustment Of Fuel Shut-Off Solenoid Shaft Can Prevent Failures
1977/08/24 Improved Coolant Seal For Connection Between Cylinder Heads
1977/08/24 Larger Boss Used In Cylinder Block So Bolt Hole Will Not Be Drilled Into Coolant Passage
1977/08/24 Installation Of Generator Sets On Rigid Bases
1977/08/24 Be Sure To Drain Oil In BrakeSaver At Every Lubricating Oil Change Period
1977/09/07 Installation Procedure For Crankshaft Wear Sleeves Changed
1977/09/07 New Clutch Groups Used In Front Power Take-Offs; Service Kits Available
1977/09/07 Engine Valve Springs Are Now Made Of Stronger Steel
1977/09/07 New Tube Assemblies For Turbocharger Oil Lines; New Base Assemblies For Oil Filters
1977/09/07 Check For Extra Holes In Crankshaft Flange If Oil Leaks From Between The Flywheel And Crankshaft Flange
1977/09/07 List Of Service Publications
1977/09/28 Stronger Fan Drive Pulley Prevents Cracks During Assembly; Torque On Pulley Bolts Changed
1977/09/28 Changes To The Injection Pump And The Fuel Setting