SERVICE LETTER SUPPLEMENT FOR DECEMBER 29, 1990 SL - PRIORITY - TORQUE CONVERTER INLET FILTER HOUSING NEEDS TO BE INSPECTED ON CERTAIN 777, 785, AND 789 TRUCKS - PI3504 - MAILED CFEL Caterpillar


SERVICE LETTER SUPPLEMENT FOR DECEMBER 29, 1990 SL - PRIORITY - TORQUE CONVERTER INLET FILTER HOUSING NEEDS TO BE INSPECTED ON CERTAIN 777, 785, AND 789 TRUCKS - PI3504 - MAILED CFEL

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Caterpillar: Confidential Yellow

SERVICE LETTER SUPPLEMENT FOR DECEMBER 29, 1990 SL - PRIORITY - TORQUE CONVERTER INLET FILTER HOUSING NEEDS TO BE INSPECTED ON CERTAIN 777, 785, AND 789 TRUCKS - PI3504 - MAILED CFEL

NOTE:   The information supplied in this service letter may not be valid after the termination date of this program.   Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.




June 9, 1991
E-75
SERVICE LETTER SUPPLEMENT
Some information needs to be changed in the Service Letter which follows:
December 29, 1990 - PI3504; Torque Converter Inlet Filter Housing Needs To Be
Inspected On Certain 777, 785, And 789 Trucks
A mail code needs to be added to the December 29, 1990 Service Letter.
Under the date of the attached Service Letter, add the 1990 Mail Code E-157.
Attach. (1-December 29, 1990 Service Letter SEBE4482)

Caterpillar Information System:

New Swing Drive Coupling Needs To Be Installed In Certain 225D And 231D Excavators; And FB227 Feller Bunchers New Swing Drive Coupling Needs To Be Installed In Certain 225D And 231D Excavators; And FB227 Feller Bunchers
Product Support Program For Reinforcing The Horizontal Beam Body On Certain 769C, 773B, And 777B Trucks Product Support Program For Reinforcing The Horizontal Beam Body On Certain 769C, 773B, And 777B Trucks
PSP FOR INCREASING THE LUBRICATION TO THE VALVE TRAIN ON CERTAIN LOW SPEED 3406B GENERATOR SET, INDUSTRIAL, AND MARINE ENG INES - PS4632 - MAILED US AND CANADA, CACO, CFEL, MARINE TEPS, LIMITED COFA, LIMITED COSA PSP FOR INCREASING THE LUBRICATION TO THE VALVE TRAIN ON CERTAIN LOW SPEED 3406B GENERATOR SET, INDUSTRIAL, AND MARINE ENG INES - PS4632 - MAILED US AND CANADA, CACO, CFEL, MARINE TEPS, LIMITED COFA, LIMITED COSA
PSP FOR REPLACING UNIT INJECTOR RETURN SPRINGS ON CERTAIN D11N TRACTORS; 776B TRACTORS; 777B, 785, 789 TRUCKS; 3508, 3512, 351 6 ENGINES - PS4591 - MAILED BRAZIL PSP FOR REPLACING UNIT INJECTOR RETURN SPRINGS ON CERTAIN D11N TRACTORS; 776B TRACTORS; 777B, 785, 789 TRUCKS; 3508, 3512, 351 6 ENGINES - PS4591 - MAILED BRAZIL
PSP FOR REPLACING UNIT INJECTOR RETURN SPRINGS ON CERTAIN D11N TRACTORS; 776B TRACTORS; 777B, 785, 789 TRUCKS; 3508, 3512, 351 6 ENGINES - PS4591 - MAILED US AND CANADA, CACO, COFA, CFEL, COSA, MARINE TEPS PSP FOR REPLACING UNIT INJECTOR RETURN SPRINGS ON CERTAIN D11N TRACTORS; 776B TRACTORS; 777B, 785, 789 TRUCKS; 3508, 3512, 351 6 ENGINES - PS4591 - MAILED US AND CANADA, CACO, COFA, CFEL, COSA, MARINE TEPS
SERVICE LETTER SUPPLEMENT - SAFETY - PARTS STOCK ACTION NEEDED - NEW FUEL CAPS NEED TO BE INSTALLED ON CERTAIN CHALLENGER 65 TRA CTORS - PI1161 - MAILED US AND CANADA, CACO, COFA, CFEL, LIMITED BRAZIL - REVISED 01/92 SERVICE LETTER SUPPLEMENT - SAFETY - PARTS STOCK ACTION NEEDED - NEW FUEL CAPS NEED TO BE INSTALLED ON CERTAIN CHALLENGER 65 TRA CTORS - PI1161 - MAILED US AND CANADA, CACO, COFA, CFEL, LIMITED BRAZIL - REVISED 01/92
The Cartridge Assemblies For the Transmission Control Solenoids Need To Be Replaced On Certain IT12B And IT14B Integrated Toolcarriers; And 910E Loaders The Cartridge Assemblies For the Transmission Control Solenoids Need To Be Replaced On Certain IT12B And IT14B Integrated Toolcarriers; And 910E Loaders
7T9074 Parking Brake Solenoid Needs To Be Inspected On Certain 12G, 14G, 16G, 120G, 130G, 140G, And 160G Motor Graders 7T9074 Parking Brake Solenoid Needs To Be Inspected On Certain 12G, 14G, 16G, 120G, 130G, 140G, And 160G Motor Graders
PSP FOR UPDATING THE WATER SPRAY SYSTEM ON CERTAIN CB-534 COMPACTORS - PS4597 - MAILED US AND CANADA, CACO PSP FOR UPDATING THE WATER SPRAY SYSTEM ON CERTAIN CB-534 COMPACTORS - PS4597 - MAILED US AND CANADA, CACO
PSP FOR REPLACING CRACKED SWING FRAMES ON CERTAIN 446 BACKHOE LOADERS - PS0475 - MAILED US AND CANADA, CACO PSP FOR REPLACING CRACKED SWING FRAMES ON CERTAIN 446 BACKHOE LOADERS - PS0475 - MAILED US AND CANADA, CACO
PRIORITY - PARTS STOCK ACTION NEEDED - NEW SOLENOID TO CONTROL GOVERNOR HORSEPOWER SETTING NEEDS TO BE INSTALLED ON CERTAIN 140 G VHP MOTOR GRADERS, 518 SKIDDERS, AND 518 GRAPPLE SKIDDERS - PI3538 - MAILED US AND CANADA, CACO, COSA, LIMITED COFA - RE PRIORITY - PARTS STOCK ACTION NEEDED - NEW SOLENOID TO CONTROL GOVERNOR HORSEPOWER SETTING NEEDS TO BE INSTALLED ON CERTAIN 140 G VHP MOTOR GRADERS, 518 SKIDDERS, AND 518 GRAPPLE SKIDDERS - PI3538 - MAILED US AND CANADA, CACO, COSA, LIMITED COFA - RE
SERVICE LETTER EXTENSION FOR APRIL 9, 1990 SL - PSP FOR TURBOCHARGER TURBINE WHEEL ON D11N TRACTORS; 776B TRACTORS; 777 B TRUCKS; AND 3508 ENGINES (SPARE) - PS4394 - MAILED US AND CANADA, CACO, COFA, CFEL, COSA SERVICE LETTER EXTENSION FOR APRIL 9, 1990 SL - PSP FOR TURBOCHARGER TURBINE WHEEL ON D11N TRACTORS; 776B TRACTORS; 777 B TRUCKS; AND 3508 ENGINES (SPARE) - PS4394 - MAILED US AND CANADA, CACO, COFA, CFEL, COSA
SERVICE LETTER EXTENSION FOR JUNE 9, 1989 SL - PSP FOR INSTALLING ETHER AID TIMER ON CERTAIN 789 TRUCKS - PS4331 - MAI LED US AND CANADA, COFA, COSA, LIMITED CACO SERVICE LETTER EXTENSION FOR JUNE 9, 1989 SL - PSP FOR INSTALLING ETHER AID TIMER ON CERTAIN 789 TRUCKS - PS4331 - MAI LED US AND CANADA, COFA, COSA, LIMITED CACO
PSP FOR PREVENTING REAR WHEEL BEARING CONES FROM ROTATING ON THE AXLE HOUSING OF CERTAIN 785 AND 789 TRUCKS - PS4637 - MAI LED US AND CANADA, COFA, BRAZIL, CFEL, COSA, LIMITED CACO PSP FOR PREVENTING REAR WHEEL BEARING CONES FROM ROTATING ON THE AXLE HOUSING OF CERTAIN 785 AND 789 TRUCKS - PS4637 - MAI LED US AND CANADA, COFA, BRAZIL, CFEL, COSA, LIMITED CACO
SERVICE LETTER EXTENSION FOR JUNE 11, 1990 SL - PSP FOR INSTALLING A NEW PISTON RETAINING BOLT IN THE 9T2879 ART ICULATION CYLINDERS ON CERTAIN 14G MOTOR GRADERS - PS4487 - MAILED US AND CANADA, CACO, CFEL, COSA SERVICE LETTER EXTENSION FOR JUNE 11, 1990 SL - PSP FOR INSTALLING A NEW PISTON RETAINING BOLT IN THE 9T2879 ART ICULATION CYLINDERS ON CERTAIN 14G MOTOR GRADERS - PS4487 - MAILED US AND CANADA, CACO, CFEL, COSA
Product Support Program For Repairing Frame Cracks In The Transitional Castings On Certain 789 Trucks Product Support Program For Repairing Frame Cracks In The Transitional Castings On Certain 789 Trucks
The ROPS Needs To Be Inspected For Cracks On Certain CP323 And CS323 Compactors The ROPS Needs To Be Inspected For Cracks On Certain CP323 And CS323 Compactors
Product Support Program For Replacement Of The Transfer Gear Case On Certain D350D And D400D Articulated Dump Trucks Product Support Program For Replacement Of The Transfer Gear Case On Certain D350D And D400D Articulated Dump Trucks
Product Support Program For Replacing The Pulse Deflector In Certain Challenger 65 Tractors, 235C Excavators, 621S Scrapers, And 637E Scrapers Product Support Program For Replacing The Pulse Deflector In Certain Challenger 65 Tractors, 235C Excavators, 621S Scrapers, And 637E Scrapers
Piston Cooling Jet Retainer Bolts Need To Be Inspected For The Correct Torque On Certain 3508, 3512, And 3516 Engines; And 785 trucks Piston Cooling Jet Retainer Bolts Need To Be Inspected For The Correct Torque On Certain 3508, 3512, And 3516 Engines; And 785 trucks
PARTS STOCK ACTION ONLY - HYDRAULIC FLOW SWITCHES NEED TO BE REMOVED FROM PARTS STOCK - PI7264 - MAILED US AND CANADA, CACO, CO FA, BRAZIL, CFEL, COSA PARTS STOCK ACTION ONLY - HYDRAULIC FLOW SWITCHES NEED TO BE REMOVED FROM PARTS STOCK - PI7264 - MAILED US AND CANADA, CACO, CO FA, BRAZIL, CFEL, COSA
Product Support Praogram For Installing A Check Valve In The Winch Control On Certain D4H And D5H Track Skidders With Grapple Arrangement Product Support Praogram For Installing A Check Valve In The Winch Control On Certain D4H And D5H Track Skidders With Grapple Arrangement
Product Support Program For Excessive Air Side Plugging Of Folded Core Radiators On Certain 826C Compactors Product Support Program For Excessive Air Side Plugging Of Folded Core Radiators On Certain 826C Compactors
Product Support Program For Installing Brake Caliper Guards On Certain Challenger 65 Tractors Product Support Program For Installing Brake Caliper Guards On Certain Challenger 65 Tractors
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