1999/11/01 Caterpillar


Improved Corrosion Protection For Reman Major Components {3100,3150,4059}

Usage:


Reman Torque Converters, Transmissions, and Final Drives

Reman transmissions and torque converters have improved corrosion protection to prevent rusting of unpainted surfaces during shipment and storage. The addition of Vapor Corrosion Inhibitor (VCI) oil to the test oil creates a vapor action which inhibits oxidation in the internal compartments. Additionally, "Noxrust" contact type rust inhibitor is brushed onto unpainted flange surfaces that are not protected by the VCI. The previous process consisted of spraying a contact type rust preventative on those surfaces, but the rust preventative had to be diluted to a 50 percent concentration to allow spray application.

Torque converters have an additional measure of protection since the rotating torque converter compartment is more open than the transmission compartment. A sheet of VCI paper is wrapped between the rotating torque converter and the external housing to provide increased vapor protection. These improvements were implemented May 11, 1999 on serial number T9287.

Reman final drive groups have also undergone changes to provide corrosion protection for unpainted surfaces during shipment and storage. The addition of Vapor Corrosion Inhibitor (VCI) oil to the test oil for Track-Type Tractor and Wheel Loader final drives and the spraying of VCI oil into the final drive compartments of Off-Highway Truck final drives, creates a vapor action in the internal compartments which inhibits oxidation. "Noxrust" contact type rust inhibitor is sprayed onto unpainted flange surfaces that are not protected by the VCI. The previous process consisted of spraying a contact type rust preventative into the final drive, but the rust preventative had to contact the surface to be effective. These improvements were implemented April 29, 1999 on serial number 17081.

Caterpillar Information System:

1999/11/01 Improved Hydraulic Line For Pilot Control Increases Service Life {5057}
1999/11/01 New ROPS Canopy Has Higher Gross Machine Weight Certification {7323}
1999/11/01 Schematic Available For 994D Wheel Loaders {7601,7566}
1999/11/01 Customer Site License And Annual Subscriptions For VIMSpc99 Software Available {7601}
1999/11/01 Correction To Disassembly And Assembly, Machine Systems, 992G Wheel Loader, SENR5893-01 {0374,6107}
1999/11/01 Seals Used In Charge Pumps Are Now Serviced {3203}
1999/11/01 New Plates On Accumulator Support Provide Longer Service Life {5077,7107}
1999/11/01 Special Instruction, REHS0434-02, Is Available {0374,6800}
1999/11/01 Special Instruction For Installing New Air Suspension Seat And Wiring Is Available {0374,1408,7324}
1999/10/25 New Flywheel Housing Gasket For 3408 And 3412 Machine Engines {1152}
1999/10/25 New Hydraulic Accumulator Assembly Procedure Increases Service Life {5077}
1999/10/25 Improved Pump Mounting Increases Hub Retention {3203}
1999/11/01 138-8440 Component Cleaner May Damage Electrical Connectors {0644}
1999/11/08 Drive Shaft Now Used {3253}
1999/11/08 New Cover Prevents Wear In Bevel Gear Group {3258}
1999/11/08 Improved Ripper Lines Available {5352,5356}
1999/11/08 Correction To SEBU7140, 545 Wheel Skidder, Operation And Maintenance Manual {0374,0375,3278,4011}
1999/11/08 Download Flash Files By Using The Caterpillar Service Information System (SIS) Or SIS Web {1901,1920}
1999/11/15 Final Drive Duo-Cone Seals {4050}
1999/11/15 Hardened Shims In The Lift And Tilt Relief Valves Prevent Pressure Loss {5117}
1999/11/15 Engine Oil Scavenge Pumps Use New Hardened Shaft Assemblies {1312}
1999/11/15 Piston Pump Swashplate Stop Retained With Dowel Pin {5070}
1999/11/15 High Temperature Engine Coolant Requires New Air Compressor Lines {1803}
1999/11/15 Correction To Schematic, Electrical System, 950G And 962G Wheel Loaders, IT62G Integrated Toolcarriers, SENR1393-01 {0374,7566}
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