New Camshaft Has Improved Profile (Shape) Of Exhaust Cams
Usage:
D379, D398, D399 Industrial, Marine, and Generator Set Engines
Description of Change: A new camshaft is used in the above model engines. The new camshaft has a different profile (shape) of the exhaust cams, which lowers the contact stress on the cams. This will lower the rate of wear and extend the service life of the camshaft. The change in design has no effect on engine performance.
NOTE: This change is similar to the earlier change made to D353 Engines. See the article, "New Camshaft Has Improved Profile (Shape) Of Exhaust Cam To Extend Service Life" on Page 8 of the January 28, 1981 Engine News.
Adaptable As: Direct replacement. The new camshaft can be used in place of the former camshaft in all earlier engines.
Caterpillar Information System:
1982/02/24 New Engine Testing And Adjusting Tools Give More Accuracy And Longer Service Life
1982/02/24 List Of Service Publications
1982/02/24 "SIRS User Instructions" Available
1982/02/10 New Flywheel Assemblies Used
1982/02/10 Gasket Kits
1982/02/10 New Crankshaft Seal Group Has Assembled Rear Seal And Wear Sleeve
1982/02/10 Bent Lever For Fuel Shut-Off Solenoid Can Cause Low Engine Performance
1982/02/10 New Parts Used In Hydramechanical Shut Off; Prefill Oil Pump
1982/02/10 New Piston Pin Retainer Used
1982/02/10 New Washers Permit Locks To Hold Better
1982/02/10 The Service Publications Information Feedback System
1982/02/10 New Liner Seat Insert With O-Ring Seal Available
1982/02/24 New Fuel Nozzle Adapter Assembly Used
1982/02/24 Engine Storage; Engine Start-Up After Storage
1982/02/24 New Main Bearings And Connecting Rod Bearings Have Thicker Layer Of Surface Material
1982/02/24 New Poppet Valve Will Decrease Chatter
1982/02/24 New Inlet And Exhaust Valves And Exhaust Inserts Available
1982/02/24 New Idler Shaft Used In Fuel Transfer Pumps
1982/02/24 Use 6V6035 Hardness Tester On Crankshafts
1982/02/24 Use The Correct Governor For Parallel Applications
1982/03/17 New Diaphragm Used In Fuel Ratio Control
1982/03/17 New Adapters And O-Ring Seals Used In Aftercooler Group
1982/03/17 Correct Lubrication Procedure Will Prevent Damage To Fan Drive
1982/03/17 New Gasket Used In Governor And Fuel Injection Pump Group