New Oil Pump Outlet Elbow Is Stronger
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.
Location of oil pump outlet elbow.
Adaptable As: The new 3T5040 Elbow is a direct replacement for the former 5N5623 Elbow, which is canceled.
Caterpillar Information System:
1982/04/07 Correct Use Of 6V2023 Flow Check Adapter Group Is Important To Prevent Damage To An Engine
1982/04/07 New Marine Gear Groups Have New Clutch Plates
1982/04/07 Use 5P5195 Fuel Line Wrench Correctly
1982/04/07 List Of Service Publications
1982/04/07 Caterpillar Electric Starting Motors
1982/04/07 Use The 6V6059 Microlite With The 6V2196 Inspection Microscope
1982/04/07 Engine Replacement
1982/04/07 Location Of Sending Unit Changed To Improve Accuracy Of Water Temperature Indication
1982/04/07 Reconditioning Of Bridge Wear Seat Is Permitted; Will Prevent Bridge Replacement When Not Necessary
1982/03/17 Brass Plug Used To Prevent Corrosion
1982/03/17 New Double-Wall Fuel Injection Lines Group And Fuel Drain Group Available As Attachments For Protection Against Fuel Leakage
1982/03/17 Heavy Duty Air Cleaner Available, With Precleaner And Automatic Dust Ejector
1982/04/07 Improved Valve Cover Seal Used
1982/04/07 Carbon Build-Up In Combustion And Inlet Areas
1982/05/12 Fuel Rack Slots Have Improved Wear Resistance
1982/05/12 List Of Service Publications
1982/05/12 5P4812 Gauge Group Components Available Separately
1982/05/12 Use Correct Part Numbers For Main And Connecting Rod Bearings
1982/05/12 Warranty Period Extended
1982/05/12 New Broken Link Spring Used In Governor
1982/05/12 New Crankshaft Main Bearings Used
1982/05/12 Use New 6V4910 Clamp-On Ammeter For Easier Electrical Current Measurement
1982/05/12 Lubricant Recommendations Changed For All Caterpillar Engines To Combat Effects Of Fuel Sulfur
1982/05/12 Improved Relief Valve Guide Decreases Maximum Oil Pressure During Cold Weather Starts