New Oil Pump Outlet Elbow Is Stronger{3314,3310}
Usage:
All 7271 Marine Transmissions
Description of Change: According to field reports, some customers have had problems with failure of the oil pump outlet elbow on 7271 Marine Transmissions. This is more common on transmissions driven by 3512 Marine Engines when operated at 1800 rpm. Vibrations, at this speed, can cause cracks in the outlet elbow.
A new ductile iron elbow is used which is stronger than the gray iron elbow formerly used. The new elbow will give a longer service life. See the illustration.
Adaptable As: The new 3T5040 Elbow is a direct replacement for the former 5N5623 Elbow, which is canceled.
Location of oil pump outlet elbow.
Caterpillar Information System:
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}
1982/03/01 New Marine Gear Groups Have New Clutch Plates{3302}
1982/03/01 New Gasket Used In Governor And Fuel Injection Pump Group{1259,1286}
1982/03/01 Brass Plug Used To Prevent Corrosion{3320}
1982/02/22 New Idler Shaft Used In Fuel Transfer Pumps{1256}
1982/03/22 Carbon Build-Up In Combustion And Inlet Areas{1058,1101,1105,1214,1104}
1982/03/22 Use Correct Torque On Hydraulic Valve Bolts, Nuts And Taperlock Studs{5050}
1982/03/22 Engine Replacement{1000}
1982/03/22 Improved Valve Cover Seal Used{1107}
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}