Usage:
December 5, 2002
(Revised June 2003)
U-315
A-218
AU-231
S-230
H-229
O-255
After failure only |
PRODUCT SUPPORT PROGRAM FOR REPLACING PISTONS ON CERTAIN 3606, 3608, 3612, AND 3616 INDUSTRIAL ENGINES |
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7755 |
PS50592
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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.
NOTE: This Revised Service Letter replaces the December 5, 2002 (Revised April 2003) Service Letter. Changes have been made to the Service Claim Allowances.
TERMINATION DATE
December 31, 2003PROBLEM
In certain circumstances, the 1214068, 1217555, and 4P0399 pistons may experience 3rd land cracking and may not reach the published life expectancy. Pistons need to be replaced on certain 3606, 3608, 3612, and 3616 Industrial Engines.AFFECTED PRODUCT
Model | Identification Number |
3606 | 8RB563-571, 573-585, 588-591, 593-610, 612-660, 662-690, 693-712, 714-735 |
3608 | 6MC478, 480-499, 501-513, 515-595 |
3612 | 9RC176, 178, 185, 187, 189-193, 195-217, 219-228, 230, 232-295 |
3616 | 1PD223-231, 236, 238, 240-243, 246-252, 255, 262-266, 268-352 |
PARTS NEEDED
Parts Needed Per Cylinder
Qty | Part Number | Description |
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1110281 | BOTTOM/OIL RING |
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1355149 | TOP RING |
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1293581 | 2nd RING |
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1726772 | PISTON AS. |
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1756597 | 3rd RING |
Qty | Part Number | Description |
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8C5230 | SEAL-O RING |
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8C9023 | SEAL-O RING |
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6V4314 | SEAL-O RING |
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1428615 | BEARING |
Additional Parts Per Cylinder Depending on Engine Configuration
Spacer Plate Configuration:Qty | Part Number | Description |
2 Piece Spacer Plate Configuration | ||
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2N3350 | SEAL-O RING |
1 Piece Spacer Plate Configuration | ||
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5P9890 | SEAL-O RING |
Combustion Gasket:
Distillate with a 1793167 liner uses a 1422826 combustion gasket
Distillate with a 1161042 liner uses a 1457230 combustion gasket
ACTION REQUIRED
See the attached Rework Procedure.SERVICE CLAIM ALLOWANCES
Piston Hours |
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Distillate |
Parts |
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HFO/Fast Ferry |
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0-5000 |
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5001-10000 |
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10001-15000 |
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15001-Up |
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PARTS DISPOSITION
Handle parts in accordance with the warranty bulletin on warranty parts handling, with actual pistons with 3rd land crack, being sent to:R.A. Lofthouse
3600 Customer Services
Lafayette Large Engine Center
Ph. (765)448-5311
Rework Procedure
Replace the existing 1214068, 1217555, and 4P0399 pistons with the material provided in this program. The cylinder head, rod, and piston assembly must be removed. The unit injector does not have to be removed, but proper blocking must be used when setting the head down to keep from damaging the tip. Refer to the 3600 Disassembly and Assembly manual (3606/08 SENR3600, 3612/16 SENR3594) for the correct procedures to complete the repair.
Illustration 1
Illustration 2
Illustration 3
Illustration 4