PARTS STOCK ACTION ONLY - HYDRAULIC CYLINDER PISTON NUTS MADE TO THIN DESIGN NEED TO BE REMOVED FROM PARTS STOCK - PI7233 - MAI LED US AND CANADA, CACO, COFA, BRAZIL, CFEL, COSA
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PARTS STOCK ACTION ONLY - HYDRAULIC CYLINDER PISTON NUTS MADE TO THIN DESIGN NEED TO BE REMOVED FROM PARTS STOCK - PI7233 - MAI LED US AND CANADA, CACO, COFA, BRAZIL, CFEL, 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.
U-58 A-31 AU-35 B-12 E-34 O-49 PARTS STOCK ACTION ONLY 7562 PI7233
Termination Date
June 30, 1990
Problem
There are several part numbers of hydraulic cylinder piston nuts in the parts system that were made to two different thicknesses. See the September 28, 1987 Service Magazine article titled "Thinner Piston Retaining Nuts Are Used In Hydraulic Cylinders". Hydraulic cylinder piston nuts made to the thin design may fail. These thinner nuts of each part number need to be removed from parts stock.
Action Required
Refer to the following chart and the Illustration. Remove all hydraulic cylinder piston nuts made to the thinner design. Nut Nut Correct Thickness Of Nut Part Thread Thickness To Be Removed From Number Size Of Nut Parts Stock 2J3950 1 1/2"-12 33.4 mm (1.31") 28.6 mm (1.12") 5J5731 1 3/4"-12 37.3 mm (1.47") 33.4 mm (1.31") 2J0564 2"-12 42.4 mm (1.67") 30.7 mm (1.21") 5J3488 2 1/4"-12 49.2 mm (1.94") 32.5 mm (1.28") 2J7686 2 1/2"-12 55.6 mm (2.19") 40.7 mm (1.60") 4J6888 2 3/4"-12 55.6 mm (2.19") 40.7 mm (1.60") 7J9250 3 1/4"-12 79.4 mm (3.12") 50.8 mm (2.00") 3G5022 4 1/2"-12 88.9 mm (3.50") 64.4 mm (2.54") 7X0835 1 3/4"-12 Use 7J5731 28.0 mm (1.12") 7X0895 3 1/4"-12 Use 7J9250 50.8 mm (2.00") ****** IMAGE: SEBE4259.00001.001 CAPTION:
Service Claim Allowances
Submit one claim for all hydraulic cylinder piston nuts removed from parts stock.
Parts Disposition
All parts removed should be rendered useless and scrapped immediately upon completion of the repair.
Caterpillar Information System:
Brackets And Clamps Need To Be Installed On The Fuel Lines Group Of Certain D10N Tractors; 651E And 656E Tractors; 773B Trucks; And 992C Loaders Brackets And Clamps Need To Be Installed On The Fuel Lines Group Of Certain D10N Tractors; 651E And 656E Tractors; 773B Trucks; And 992C Loaders
PRIORITY - PARTS STOCK ACTION NEEDED - HOUSINGS NEED TO BE INSPECTED FOR CHIPS AND BEARINGS NEED TO BE REPLACED IN THE RET ARDER AND TRANSFER GEAR GROUP ON CERTAIN 657E SCRAPERS - PI3459 - MAILED US, CANADA, CACO, COFA, COSA - REVISED 4/90 PRIORITY - PARTS STOCK ACTION NEEDED - HOUSINGS NEED TO BE INSPECTED FOR CHIPS AND BEARINGS NEED TO BE REPLACED IN THE RET ARDER AND TRANSFER GEAR GROUP ON CERTAIN 657E SCRAPERS - PI3459 - MAILED US, CANADA, CACO, COFA, COSA - REVISED 4/90
PSP FOR INSTALLING NEW BRAKE PLATES AND DISCS IN CERTAIN D4H, D5H, D6H, AND D7H TRACTORS - PS0432 - MAILED COFA PSP FOR INSTALLING NEW BRAKE PLATES AND DISCS IN CERTAIN D4H, D5H, D6H, AND D7H TRACTORS - PS0432 - MAILED COFA
Product Support Program For Replacing The Cylinder Block On Certain D8L Tractors And 631E Wheel Tractors Product Support Program For Replacing The Cylinder Block On Certain D8L Tractors And 631E Wheel Tractors
PSP FOR INSTALLING A NEW DIFFERENTIAL SEAL ON CERTAIN 631E AND 637E WHEEL TRACTORS - PS4413 - MAILED US, CANADA, CACO, COFA, BRA ZIL, CFEL, COSA PSP FOR INSTALLING A NEW DIFFERENTIAL SEAL ON CERTAIN 631E AND 637E WHEEL TRACTORS - PS4413 - MAILED US, CANADA, CACO, COFA, BRA ZIL, CFEL, COSA
SERVICE LETTER SUPPLEMENT FOR AUGUST 2, 1989 SL - PS4339 - PSP FOR REDUCING BEVEL GEAR AND PINION NOISE AND REDUCING THE RUST BEA RING WEAR ON CERTAIN 56 WINCHES USED ON D6H TRACTORS - MAILED US AND CANADA, CACO, COFA, CFEL, COSA SERVICE LETTER SUPPLEMENT FOR AUGUST 2, 1989 SL - PS4339 - PSP FOR REDUCING BEVEL GEAR AND PINION NOISE AND REDUCING THE RUST BEA RING WEAR ON CERTAIN 56 WINCHES USED ON D6H TRACTORS - MAILED US AND CANADA, CACO, COFA, CFEL, COSA
PSP FOR INSTALLING NEW PISTON RINGS AND CYLINDER LINERS TO REDUCE OIL CONSUMPTION ON CERTAIN CHALLENGER 65 TRACTORS; 235C EXC AVATORS; AND 963 AND 97S LOADERS - PS0434 - MAILED COSA PSP FOR INSTALLING NEW PISTON RINGS AND CYLINDER LINERS TO REDUCE OIL CONSUMPTION ON CERTAIN CHALLENGER 65 TRACTORS; 235C EXC AVATORS; AND 963 AND 97S LOADERS - PS0434 - MAILED COSA
PSP FOR INSTALLING NEW PISTON RINGS AND CYLINDER LINERS TO REDUCE OIL CONSUMPTION ON CERTAIN CHALLENGER 65 TRACTORS; 235C E24 0, EL240, E300 AND EL300 EXCAVATORS; AND 963 AND 973 LOADERS - MAILED US, CANADA, CACO, COFA, CFEL - PS0434 PSP FOR INSTALLING NEW PISTON RINGS AND CYLINDER LINERS TO REDUCE OIL CONSUMPTION ON CERTAIN CHALLENGER 65 TRACTORS; 235C E24 0, EL240, E300 AND EL300 EXCAVATORS; AND 963 AND 973 LOADERS - MAILED US, CANADA, CACO, COFA, CFEL - PS0434
PSP FOR INSTALLING NEW ROLLERS IN THE ONE-WAY CLUTCH OF CERTAIN 56H WINCHES - PS4418 - MAILED US, CANADA, CACO, COFA, CFE L, COSA PSP FOR INSTALLING NEW ROLLERS IN THE ONE-WAY CLUTCH OF CERTAIN 56H WINCHES - PS4418 - MAILED US, CANADA, CACO, COFA, CFE L, COSA
PSP FOR INCREASING THE NUMBER OF DISCS AND PLATES IN THE STEERING CLUTCH AND BRAKE MODULES ON CERTAIN D9N AND D10N TRA CTO RS - PS0416 - MAILED CACO, COFA, CFEL, COSA - REVISED 10/90 PSP FOR INCREASING THE NUMBER OF DISCS AND PLATES IN THE STEERING CLUTCH AND BRAKE MODULES ON CERTAIN D9N AND D10N TRA CTO RS - PS0416 - MAILED CACO, COFA, CFEL, COSA - REVISED 10/90
PARTS STOCK ACTION ONLY - NEW CYLINDER HEAD GASKETS USED ON 3408 AND 3412 ENGINES - PI7228 - MAILED US AND CANADA, CACO, COF A, BRAZIL, CFEL, COSA, MARINE TEPS PARTS STOCK ACTION ONLY - NEW CYLINDER HEAD GASKETS USED ON 3408 AND 3412 ENGINES - PI7228 - MAILED US AND CANADA, CACO, COF A, BRAZIL, CFEL, COSA, MARINE TEPS
PSP FOR CRANKSHAFTS IN CERTAIN D10 TRACTORS, D348 ENGINES, 776 TRACTORS, 777 TRUCKS, AND 992 LOADERS - PS0428 - MAILED US AND CAN ADA, CACO, COFA, CFEL, COSA PSP FOR CRANKSHAFTS IN CERTAIN D10 TRACTORS, D348 ENGINES, 776 TRACTORS, 777 TRUCKS, AND 992 LOADERS - PS0428 - MAILED US AND CAN ADA, CACO, COFA, CFEL, COSA
PRIORITY - DIFFERENTIAL BEARING CAP BOLTS NEED TO BE TIGHTENED ON CERTAIN 814B WHEEL TRACTORS; 815B AND 816B COMPACTORS; AND 966 E LOADERS - PI3462 - MAILED US AND CANADA, CACO, CFEL, COSA LIMITED COFA PRIORITY - DIFFERENTIAL BEARING CAP BOLTS NEED TO BE TIGHTENED ON CERTAIN 814B WHEEL TRACTORS; 815B AND 816B COMPACTORS; AND 966 E LOADERS - PI3462 - MAILED US AND CANADA, CACO, CFEL, COSA LIMITED COFA
PSP FOR INSTALLING NEW FUEL INJECTION LINE BRACKETS AND CLAMPS ON CERTAIN D8L TRACTORS, D9N TRACTORS, 589 PIPELAYERS, 631E SCR APERS, 637E SCRAPERS, 657E SCRAPERS, 768C TRACTORS, 769C TRUCKS, 834B TRACTORS, AND 988B LOADERS - PS4428 - MAILED US AND C PSP FOR INSTALLING NEW FUEL INJECTION LINE BRACKETS AND CLAMPS ON CERTAIN D8L TRACTORS, D9N TRACTORS, 589 PIPELAYERS, 631E SCR APERS, 637E SCRAPERS, 657E SCRAPERS, 768C TRACTORS, 769C TRUCKS, 834B TRACTORS, AND 988B LOADERS - PS4428 - MAILED US AND C
PSP FOR REWORKING THE WINCH CONTROLS ON CERTAIN 518 SKIDDERS - PS4421 - MAILED US AND CANADA, CACO, COFA, CFEL, COSA PSP FOR REWORKING THE WINCH CONTROLS ON CERTAIN 518 SKIDDERS - PS4421 - MAILED US AND CANADA, CACO, COFA, CFEL, COSA
PSP FOR REPAIRING CERTAIN 8SU BULLDOZERS ON D8N TRACTORS - PS0447 - MAILED COSA PSP FOR REPAIRING CERTAIN 8SU BULLDOZERS ON D8N TRACTORS - PS0447 - MAILED COSA
PSP FOR TURBOCHARGER TURBINE WHEEL ON D11N TRACTORS; 776B TRACTORS; 777B TRUCKS; AND 3508 ENGINES (SPARE) - PS4394 - MAI LED US AND CANADA, CACO, COFA, CFEL, COSA PSP FOR TURBOCHARGER TURBINE WHEEL ON D11N TRACTORS; 776B TRACTORS; 777B TRUCKS; AND 3508 ENGINES (SPARE) - PS4394 - MAI LED US AND CANADA, CACO, COFA, CFEL, COSA
Drain Holes May Need To Be Drilled In The ROPS Of Certain 950E Loaders. Drain Holes May Need To Be Drilled In The ROPS Of Certain 950E Loaders.
SERVICE LETTER SUPPLEMENT FOR MARCH 29, 1990 SL - PI3462 - PRIORITY - DIFFERENTIAL BEARING CAP BOLTS NEED TO BE TIGHTENED ON CERTAIN 814B WHEEL TRACTORS; 815B, 816B COMPACTORS; 966E LOADERS - MAIL US AND CANADA, CACO, CFEL, COSA, COFA SERVICE LETTER SUPPLEMENT FOR MARCH 29, 1990 SL - PI3462 - PRIORITY - DIFFERENTIAL BEARING CAP BOLTS NEED TO BE TIGHTENED ON CERTAIN 814B WHEEL TRACTORS; 815B, 816B COMPACTORS; 966E LOADERS - MAIL US AND CANADA, CACO, CFEL, COSA, COFA
PSP FOR REPLACING FAILED EXHAUST VALVES ON CERTAIN - SEE PAPER COPY FOR APPLICABLE MODELS - PS0452 - MAILED US AND CANADA, CAC O, COFA - REVISED 12/90 PSP FOR REPLACING FAILED EXHAUST VALVES ON CERTAIN - SEE PAPER COPY FOR APPLICABLE MODELS - PS0452 - MAILED US AND CANADA, CAC O, COFA - REVISED 12/90
PSP FOR REPEAT TRACK JOINT FAILURES (LEAKS) ON D8N TRACTORS - PS0430 - MAILED CACO PSP FOR REPEAT TRACK JOINT FAILURES (LEAKS) ON D8N TRACTORS - PS0430 - MAILED CACO
PSP FOR REPAIR OF CRACKS AND REINFORCEMENT OF THE CASE AND FRAME ASSEMBLY ON D5H CUSTOM SKIDDERS - PS4448 - MAILED US, CAN ADA PSP FOR REPAIR OF CRACKS AND REINFORCEMENT OF THE CASE AND FRAME ASSEMBLY ON D5H CUSTOM SKIDDERS - PS4448 - MAILED US, CAN ADA
PARTS STOCK ACTION ONLY - 8D6947 AND 9G5589 SWITCHES NEED TO BE REMOVED FROM PARTS STOCK - PI7234 - MAILED US AND CANADA, CAC O, COFA, BRAZIL, CFEL, COSA PARTS STOCK ACTION ONLY - 8D6947 AND 9G5589 SWITCHES NEED TO BE REMOVED FROM PARTS STOCK - PI7234 - MAILED US AND CANADA, CAC O, COFA, BRAZIL, CFEL, COSA
SERVICE LETTER SUPPLEMENT FOR FEBRUARY 11, 1990 SL - PS0416 - PSP FOR INCREASING THE NUMBER OF DISCS AND PLATES IN THE STE ERING CLUTCH AND BRAKE MODULES ON CERTAIN D9N AND D10N TRACTORS - MAILED CACO, COFA, CFEL, COSA SERVICE LETTER SUPPLEMENT FOR FEBRUARY 11, 1990 SL - PS0416 - PSP FOR INCREASING THE NUMBER OF DISCS AND PLATES IN THE STE ERING CLUTCH AND BRAKE MODULES ON CERTAIN D9N AND D10N TRACTORS - MAILED CACO, COFA, CFEL, COSA