Improved Valve Cover Seal Used{1107}
Usage:
All D379, G379, D398, G398, D399 And G399 Engines
Description of Change: An improved valve cover seal is used in the cylinder head and valve mechanism groups on the above engines. The improved seal is 13.50 mm (.531") high and will make a better seal between the valve cover and the cylinder head. The earlier seal is 12.70 mm (.500") high. The improved seal also has a white stripe (mark) on it for identification purposes.
There have been some leakage problems with the earlier seal.
Adaptable To: The part number of the 2N3597 Seal did not change. The improved 2N3597 Seal is in effect with the Serial Numbers shown in the chart. The improved 2N3597 Seal is adaptable to all the above engines.
Caterpillar Information System:
1982/03/22 Engine Replacement{1000}
1982/03/22 Use Correct Torque On Hydraulic Valve Bolts, Nuts And Taperlock Studs{5050}
1982/03/22 Carbon Build-Up In Combustion And Inlet Areas{1058,1101,1105,1214,1104}
1982/03/15 New Oil Pump Outlet Elbow Is Stronger{3314,3310}
1982/03/15 Use The 6V6059 Microlite With The 6V2196 Inspection Microscope{0651}
1982/03/15 New Diaphragm Used In Fuel Ratio Control{1278}
1982/03/15 More Flexible Hose For Use With Hydraulic Flowmeter{0651,5050}
1982/03/08 Correct Lubrication Procedure Will Prevent Damage To Fan Drive{1359,0374,0375}
1982/03/08 New Adapters And O-Ring Seals Used In Aftercooler Group{1063}
1982/03/08 Heavy Duty Air Cleaner Available, With Precleaner And Automatic Dust Ejector{1051,1055,1061,1062}
1982/03/08 Reconditioning of Bridge Wear Seat Is Permitted; Will Prevent Bridge Replacement When Not Necessary{1100}
1982/03/08 New Double-Wall Fuel Injection Lines Group And Fuel Drain Group Available As Attachments For Protection Against Fuel Leakage{1252,1254,7400}
1982/03/22 Use 5P5195 Fuel Line Wrench Correctly{0612,1252}
1982/03/22 Caterpillar Electric Starting Motors{1453,1407}
1982/03/22 Correct Use Of 6V2023 Flow Check Adapter Group Is Important To Prevent Damage To An Engine{0651,0654,1250}
1982/03/22 Use FT1614 Cover To Protect Center Shaft Assembly{0622,3305,3306,3302,3307}
1982/03/22 Improved Plunger And New Spring Used In Mechanical Shutoff Group{7418}
1982/03/29 Parts Book Changes{0374}
1982/03/29 Location Of Sending Unit Changed To Improve Accuracy Of Water Temperature Indication{7453}
1982/03/29 Flywheel Adapters For Dynamometer Testing{1156,0652}
1982/03/29 Multi-Piece Wheel Rims; Caution Must Be Used{4202,4201}
1982/03/29 New Regulator Group Increases Coolant Flow To Cab Heater, Prevents Overcooling{1355}
1982/03/29 Twisted Port Plate Can Cause Excessive Case Drain From Piston Pump Or Motor{5058,5070}
1982/04/05 Lubricant Recommendations Have Been Changed For Vehicular Products{0680,0374,0375,3004,1318,5060}