PSP FOR DAMAGED BOLTS IN GOVERNOR FLYWEIGHT CARRIER AND AUTO TIMING ADVANCE UNITS IN 3406B INDUSTRY, MARINE, GEN SET AND TRU CK ENGINES - MAILED TRUCK TEPS, AGRICULTURE TEPS AND MARINE TEPS
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PSP FOR DAMAGED BOLTS IN GOVERNOR FLYWEIGHT CARRIER AND AUTO TIMING ADVANCE UNITS IN 3406B INDUSTRY, MARINE, GEN SET AND TRU CK ENGINES - MAILED TRUCK TEPS, AGRICULTURE TEPS AND MARINE TEPS
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.
TT-9 TA-2 TM-2 1264, 1272 PS4224 NOTE: This Program can be administered either before or after a failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS4224" as Part Number and "7755" as Group Number. Although products are to be administered as described above, parts stock should be purged immediately.
Termination Date
May 31, 1989
Problem
Some 1S5440 Dowels were made with a chamfer on the ends instead of a radius. These dowels are used in certain governor groups and automatic timing advance units. The chamfered dowels may damage the threads of the bolts in the governor flyweight retainer and in the automatic timing advance units.
Affected Product
Model Identification Number Automatic Timing Advance Units Only 3406B 7FB86679 - 95381 2WB4651 - 4919 4TB1106 - 1216 6TB3856 - 4072 Automatic Timing Advance Units And Governors 3406B 7FB95382 - 99999 4MG1 - 3599 2WB4920 - 5353 4TB1217 - 1399 6TB4073 - 4467 Governors Only 3406B 4MG3600 - 10013
Parts Needed
Parts Stock To rework the following: 2W6179 Pump Group 1N3110 Governor Group 2W7325 Governor Group 4W1628 Governor Group 7C1677 Governor Group 7C4797 Governor Group 7C6576 Governor Group 8N9682 Governor Group 4W2427 Pump and Governor Gp. 4W3897 Pump and Governor Gp. 7C183 Pump and Governor Gp. 8N9675 Pump and Governor Gp. 4 - 9Y7037 Bolt 1 - 335879 Ring 4 - 1S5440 Dowel 1 - 8N9382 Gasket 1 - 4W435 Seal 1 - 8N9384 Gasket 1 - 8M8515 Seal To rework the following: 2W6174 Camshaft As.,9L4990 Weight As. 4 - 9Y7037 Bolt 4 - 1S5440 Dowel Affected Product Automatic Timing Advance Units Only 4 - 1S5440 Dowel 4 - 8T7893 Bolt 1 - 4W435 Seal 1 - 4W4616 Seal 1 - 2W459 Gasket Automatic Timing Advance Units And Governors 4 - 9Y7037 Bolt 1 - 335879 Ring 8 - 1S5440 Dowel 4 - 8T7893 Bolt 1 - 8N9382 Gasket 1 - 4W435 Seal 1 - 8N9384 Gasket 1 - 4W4616 Seal 1 - 8M8515 Seal 1 - 2W459 Gasket Governors Only 4 - 9Y7037 Bolt 1 - 335879 Ring 4 - 1S5440 Dowel 1 - 8N9384 Gasket 1 - 8N9382 Gasket 1 - 8M8515 Seal
Action Required
Parts Stock Check all 1S5440 Dowels in parts stock. Remove all 1S5440 Dowels that have a chamfer on the ends. 1S5440 Dowels with a radius on the ends are good. See the Illustrations. Remove all 1S5440 Dowels from the following groups and assemblies and install new 1S5440 Dowels. Category 1 2W6179 Pump Group 1N3110 Governor Group 2W7325 Governor Group 4W1628 Governor Group 7C1677 Governor Group 7C4797 Governor Group 7C6576 Governor Group 8N9682 Governor Group 2W6174 Camshaft As. 9L4990 Weight As. Category 2 4W2427 Pump and Governor Gp. 4W3897 Pump and Governor Gp. 7C183 Pump and Governor Gp. 8N9675 Pump and Governor Gp. ****** IMAGE: SEBE3819.00001.001 CAPTION: Chamfered End ****** IMAGE: SEBE3819.00001.002 CAPTION: Radius End Affected Product Check the upper rear corner of the right side of the cylinder block for the code "5AX" or "5A". If the code is there, the product has already been reworked. If the code is not there, the product needs to be reworked. Stamp "5AX" on the upper rear corner of the right side of the cylinder block after the product has been reworked. Governor: Remove all 1S5440 Dowels with chamfers from the flyweight carriers. Install the new parts. If the engine is equipped with a tachometer drive, remove the tachometer drive before the governor is installed. Align the slot and the drive tang and install the tachometer drive. Automatic Timing Advance Unit: Remove all 1S5440 Dowels with chamfers. Install the new parts. Ensure that the dynamic timing is correct.
Service Claim Allowances
Submit one claim for all chamfered 1S5440 Dowels removed from parts stock. Product Caterpillar Dealer Suggested Customer Suggested smu/age Parts Labor Hrs. Parts Labor Hrs. Parts Labor Hrs. whichever (C/L) (Sell) (C/L) (Sell) comes first Automatic Timing Advance Units And Governors 0-4000 100% 4.5 0 0 0 0 0-24 mo 0-150000 mi 4001-6000 50% 4.5 0 0 50% 0 25-36 mo 150001-300000 mi Automatic Timing Advance Units Only 0-4000 100% 2 0 0 0 0 0-24 mo 0-150000 mi 4001-6000 50% 2 0 0 50% 0 25-36 mo 150001-300000 mi Governors Only 0-4000 100% 2.5 0 0 0 0 0-24 mo 0-150000 mi 4001-6000 50% 2.5 0 0 50% 0 25-36 mo 150001-300000 mi Parts Stock - Category 1 100% 1 0 0 0 0 Parts Stock - Category 2 100% 2 0 0 0 0 NOTE: If OEM, parts are at C/L and labor at sell rate.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Caterpillar Information System:
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PSP FOR PISTON SKIRT SCUFFING ON 776B TRACTORS AND 777B, 785, 789 TRUCKS - MAILED US AND CANADA, COFA, LIMITED CACO, LIMITED CFE L - REVISED PSP FOR PISTON SKIRT SCUFFING ON 776B TRACTORS AND 777B, 785, 789 TRUCKS - MAILED US AND CANADA, COFA, LIMITED CACO, LIMITED CFE L - REVISED
Orifice Needs To Be Installed To Limit Swing Speed Of Upper Conveyor On Certain PR-750B Pavement Profilers Orifice Needs To Be Installed To Limit Swing Speed Of Upper Conveyor On Certain PR-750B Pavement Profilers
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PSP FOR TRANSMISSION SHIFT HESITATION ON CERTAIN D3B, D4B, D4H, D5H TRACTORS; 910, G910, 916, G916, 926, G926, 930, 931B, 935 B, 936, G936, 950B, 966C, 966R LOADERS; IT18, IT18B, IT28, IT28B INTEGRATED TOOLCARRIERS - MAILED US AND CANADA, CACO, COFA, PSP FOR TRANSMISSION SHIFT HESITATION ON CERTAIN D3B, D4B, D4H, D5H TRACTORS; 910, G910, 916, G916, 926, G926, 930, 931B, 935 B, 936, G936, 950B, 966C, 966R LOADERS; IT18, IT18B, IT28, IT28B INTEGRATED TOOLCARRIERS - MAILED US AND CANADA, CACO, COFA,
PSP FOR TRANSMISSION DRIVE SHAFT, TORQUE CONVERTER AND DIFFERENTIAL BOLTS ON 776B TRACTORS AND 777B TRUCKS - MAILED US AND CANADA, CACO, COFA, LIMITED CFEL - REVISED 04/89 PSP FOR TRANSMISSION DRIVE SHAFT, TORQUE CONVERTER AND DIFFERENTIAL BOLTS ON 776B TRACTORS AND 777B TRUCKS - MAILED US AND CANADA, CACO, COFA, LIMITED CFEL - REVISED 04/89
PSP FOR DRIVE SPROCKET RETAINING BOLTS ON AP-1200 ASPHALT PAVERS - MAILED US AND CANADA PSP FOR DRIVE SPROCKET RETAINING BOLTS ON AP-1200 ASPHALT PAVERS - MAILED US AND CANADA
PSP FOR FINAL DRIVE BOLT TORQUE ON 12G, 14G, 130G, 140G, AND 160G MOTOR GRADERS - MAILED US AND CANADA, CACO, COFA, CFEL, COS A PSP FOR FINAL DRIVE BOLT TORQUE ON 12G, 14G, 130G, 140G, AND 160G MOTOR GRADERS - MAILED US AND CANADA, CACO, COFA, CFEL, COS A
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