SERVICE LETTER SUPPLEMENT FOR JUNE 1, 1991 SL - PSP FOR INCREASING THE LUBRICATION TO THE VALVE TRAIN ON CERTAIN LOW SPE ED 3406B GENERATOR SET, INDUSTRIAL, AND MARINE ENGINES - PS4632 - MAILED US AND CANADA, CACO, CFEL, MARINE TEPS, LIMITE D COFA, L Caterpillar


SERVICE LETTER SUPPLEMENT FOR JUNE 1, 1991 SL - PSP FOR INCREASING THE LUBRICATION TO THE VALVE TRAIN ON CERTAIN LOW SPE ED 3406B GENERATOR SET, INDUSTRIAL, AND MARINE ENGINES - PS4632 - MAILED US AND CANADA, CACO, CFEL, MARINE TEPS, LIMITE D COFA, L

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Caterpillar: Confidential Yellow

SERVICE LETTER SUPPLEMENT FOR JUNE 1, 1991 SL - PSP FOR INCREASING THE LUBRICATION TO THE VALVE TRAIN ON CERTAIN LOW SPE ED 3406B GENERATOR SET, INDUSTRIAL, AND MARINE ENGINES - PS4632 - MAILED US AND CANADA, CACO, CFEL, MARINE TEPS, LIMITE D COFA, LIMITED COSA

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.




October 23, 1991
U-210
A-157
AU-138.1
E-144
O-160.1
TM-17
SERVICE LETTER SUPPLEMENT
Some information needs to be changed in the Service Letter which follows:
June 1, 1991 - PS4632; Product Support Program For Increasing The Lubrication
To The Valve Train On Certain Low Speed 3406B Generator Set, Industrial, And
Marine Engines
Under the heading Affected Product, add the following product identification
numbers.

Affected Product

Model Identification Number
3406B 2WB8421, 9216, 9768, 10224, 10298, 10358, 10368, 10686, 10693,
10699, 10678, 10679, 10683, 10687, 10692, 10698, 10857
4TB2985, 3078, 3082, 3098, 3106, 3141, 3151, 3179, 3182, 3212,
3213, 3288-3292, 3313
6TB7085, 8338

Caterpillar Information System:

Product Support Program For Replacing The Arm Pad Assemblies On Certain 225D, 231D, 235C, And 245B Excavators; And 227 Loggers Product Support Program For Replacing The Arm Pad Assemblies On Certain 225D, 231D, 235C, And 245B Excavators; And 227 Loggers
Product Support Program For Preventing Rear Wheel Bearing Cones From Rotating On The Axle Housing Of Certain 776B Tractors, 777 Trucks, and 777B Trucks Product Support Program For Preventing Rear Wheel Bearing Cones From Rotating On The Axle Housing Of Certain 776B Tractors, 777 Trucks, and 777B Trucks
Product Support Program For Replacing The Axle Differential Planet Gear Thrust Washers And The Bevel Gear Bolts On Certain D25D, D30D, D350D, And D400D Articulated Dump Trucks Product Support Program For Replacing The Axle Differential Planet Gear Thrust Washers And The Bevel Gear Bolts On Certain D25D, D30D, D350D, And D400D Articulated Dump Trucks
Product Support Program For Installing New Exhaust Manifolds On Certain 768C and 772B Tractors; And 769C And 773B Trucks Product Support Program For Installing New Exhaust Manifolds On Certain 768C and 772B Tractors; And 769C And 773B Trucks
New Swing Frames Need To Be Installed On Certain 446 Backhoe Loaders New Swing Frames Need To Be Installed On Certain 446 Backhoe Loaders
Service Letter Extension Service Letter Extension
SERVICE LETTER SUPPLEMENT FOR JUNE 20, 1990 SL - PSP FOR CYLINDER HEAD GASKET FAILURES ON CERTAIN (SEE PAPER COPY FOR APP LICABLE MODELS) - PS0453 - MAILED US AND CANADA, CACO, COFA, CFEL, COSA SERVICE LETTER SUPPLEMENT FOR JUNE 20, 1990 SL - PSP FOR CYLINDER HEAD GASKET FAILURES ON CERTAIN (SEE PAPER COPY FOR APP LICABLE MODELS) - PS0453 - MAILED US AND CANADA, CACO, COFA, CFEL, COSA
SERVICE LETTER EXTENSION FOR OCTOBER 8, 1990 SL - PSP FOR GOVERNOR SERVO PIN LOSS ON CERTAIN 3304, 3306, 3306B, 3406 AND 340 6B ENGINES - PS4531 - MAILED US AND CANADA, CACO, COFA, CFEL, COSA, TRUCK TEPS, MARINE TEPS, AGRICULTURE TEPS SERVICE LETTER EXTENSION FOR OCTOBER 8, 1990 SL - PSP FOR GOVERNOR SERVO PIN LOSS ON CERTAIN 3304, 3306, 3306B, 3406 AND 340 6B ENGINES - PS4531 - MAILED US AND CANADA, CACO, COFA, CFEL, COSA, TRUCK TEPS, MARINE TEPS, AGRICULTURE TEPS
New Sun Gear Needs To Be Installed In The Transmission Of Certain 773B Trucks New Sun Gear Needs To Be Installed In The Transmission Of Certain 773B Trucks
PARTS STOCK ACTION ONLY - 1R0734 OIL FILTERS NEED TO BE REMOVED FROM PARTS STOCK - PI7272 - MAILED US AND CANADA, CACO, CO FA, BRAZIL, CFEL, COSA, TRUCK TEPS, MARINE TEPS, AGRICULTURE TEPS PARTS STOCK ACTION ONLY - 1R0734 OIL FILTERS NEED TO BE REMOVED FROM PARTS STOCK - PI7272 - MAILED US AND CANADA, CACO, CO FA, BRAZIL, CFEL, COSA, TRUCK TEPS, MARINE TEPS, AGRICULTURE TEPS
Product Support Program For Adding A Missing Weld To The Frame Of Certain D4H TSK Series II And D5H TSK Series II Track Skidders Product Support Program For Adding A Missing Weld To The Frame Of Certain D4H TSK Series II And D5H TSK Series II Track Skidders
Product Support Program For Replacing Failed Intermediate Hoist Cylinders On Certain 789 Trucks Product Support Program For Replacing Failed Intermediate Hoist Cylinders On Certain 789 Trucks
SERVICE LETTER EXTENSION FOR JUNE 25, 1990 SL - PSP FOR REPLACING ERODED CYLINDER HEAD INJECTOR SLEEVES IN CERTAIN - (SE E PAPER COPY FOR APPLICABLE SALES MODELS) - PS0456 - US AND CANADA, CACO, LIMITED COFA - REVISED 10/90 SERVICE LETTER EXTENSION FOR JUNE 25, 1990 SL - PSP FOR REPLACING ERODED CYLINDER HEAD INJECTOR SLEEVES IN CERTAIN - (SE E PAPER COPY FOR APPLICABLE SALES MODELS) - PS0456 - US AND CANADA, CACO, LIMITED COFA - REVISED 10/90
SERVICE LETTER SUPPLEMENT FOR APRIL 17, 1990 SL - PSP FOR REPLACING FAILED EXHAUST VALVES ON CERTAIN (SEE PAPER COPY FOR APP LICABLE MODELS) - PS0452 - REVISED 12/90 - MAILED US AND CANADA, CACO, COFA SERVICE LETTER SUPPLEMENT FOR APRIL 17, 1990 SL - PSP FOR REPLACING FAILED EXHAUST VALVES ON CERTAIN (SEE PAPER COPY FOR APP LICABLE MODELS) - PS0452 - REVISED 12/90 - MAILED US AND CANADA, CACO, COFA
Product Support Program For Installing A Suction Strainer On Certain CS433B And CP433B Vibratory Compactors Product Support Program For Installing A Suction Strainer On Certain CS433B And CP433B Vibratory Compactors
Product Support Program For Installing New Bolts And Washers For The Crankshaft Counterweights On Certain D11N Tractors; 776B Tractors; 777B, 785, And 789 Trucks; And 3508, 3512, And 3516 Engines Product Support Program For Installing New Bolts And Washers For The Crankshaft Counterweights On Certain D11N Tractors; 776B Tractors; 777B, 785, And 789 Trucks; And 3508, 3512, And 3516 Engines
Product Support Program For Installing An Automatic Ether Injection System (AEIS) On Certain 785 And 789 Trucks Product Support Program For Installing An Automatic Ether Injection System (AEIS) On Certain 785 And 789 Trucks
Product Support Program For Installing An Automatic Ether Injection System (AEIS) On Certain 785 And 789 Trucks Product Support Program For Installing An Automatic Ether Injection System (AEIS) On Certain 785 And 789 Trucks
Product Support Program For Installing An Automatic Ether Injection System (AEIS) On Certain 776B Tractors And 777B Trucks Product Support Program For Installing An Automatic Ether Injection System (AEIS) On Certain 776B Tractors And 777B Trucks
Product Support Program For Installing An Automatic Ether Injection System (AEIS) on Certain 776B Tractors And 777B Trucks Product Support Program For Installing An Automatic Ether Injection System (AEIS) on Certain 776B Tractors And 777B Trucks
SERVICE LETTER EXTENSION FOR MAY 16, 1991 SL - PSP FOR UPDATING THE WATER SPRAY SYSTEM ON CERTAIN CB-534 COMPACTORS - PS4 597 - MAILED US AND CANADA, CACO SERVICE LETTER EXTENSION FOR MAY 16, 1991 SL - PSP FOR UPDATING THE WATER SPRAY SYSTEM ON CERTAIN CB-534 COMPACTORS - PS4 597 - MAILED US AND CANADA, CACO
New Transmission Filter Group Needs To Be Installed On Certain Challenger 65 And Challenger 75 Tractors New Transmission Filter Group Needs To Be Installed On Certain Challenger 65 And Challenger 75 Tractors
SERVICE LETTER SUPPLEMENT FOR JUNE 10, 1989 SL (REVISED 10/91) - PSP FOR EXCESSIVE AIR SIDE PLUGGING OF FOLDED CORE RADIATORS IN CERTAIN IT18, IT18B, 1T28, 1T28B TOOLCARRIERS; 916, 926/926E, G926, 936/936E LOADERS - PS0391 - MAILED US AND CANADA , CA SERVICE LETTER SUPPLEMENT FOR JUNE 10, 1989 SL (REVISED 10/91) - PSP FOR EXCESSIVE AIR SIDE PLUGGING OF FOLDED CORE RADIATORS IN CERTAIN IT18, IT18B, 1T28, 1T28B TOOLCARRIERS; 916, 926/926E, G926, 936/936E LOADERS - PS0391 - MAILED US AND CANADA , CA
SERVICE LETTER SUPPLEMENT FOR OCTOBER 17, 1991 SL - PSP FOR INSTALLING NEW EXHAUST MANIFOLDS ON CERTAIN 768C, 772B TRA CTORS; 769C, 773B TRUCKS - PS4657 - MAILED US AND CANADA, CACO, COFA, BRAZIL, CFEL, COSA SERVICE LETTER SUPPLEMENT FOR OCTOBER 17, 1991 SL - PSP FOR INSTALLING NEW EXHAUST MANIFOLDS ON CERTAIN 768C, 772B TRA CTORS; 769C, 773B TRUCKS - PS4657 - MAILED US AND CANADA, CACO, COFA, BRAZIL, CFEL, COSA
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