KNOB 7T9517 - Caterpillar

Caterpillar: Confidential Yellow
This Program must be administered as soon as possible. When reporting the repair, use "PI30024" as the Part number and "7751" as the Group Number, "56" as the Warranty Claim Description Code and "T" as the SIMS Description Code. Exception: If the repair is done after failure, use "PI30024" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.
Completion Date
December 31, 2000Termination Date
June 30, 2001Problem
Some 3500 Diesel Engines have been built with cylinder heads that may have the water outlet blocked by casting flash. The blockage may cause the cylinder head to overheat and may cause a valve to seize or at worst, a piston to seize.
Affected Product
Model & Identification Number
3508 (3LS221-223, 3PS193-196, 95Y1118-1119, 96Y1958-1961, 97Y732, 23Z7604, 23Z7612-7620, 23Z7624, 69Z863-864)
3508B (4GM514-526, 4GM528-534, 4GM536, 7SM273-290, 5PS255, 2HW134-135, 3DM167, 3DM170, 2BM143-144)
3512 (6PM46-47, 3MS217-220, 3MS222, 49Y950-952, 50Y1704-1705, 50Y1707, 50Y1709, 24Z9497-9500, 24Z9502, 24Z9505-9507, 24Z9510, 24Z9513, 24Z9517-9519, 24Z9522-9528, 24Z9536, 24Z9540-9541, 24Z9543, 65Z963-970, 66Z890-891, 67Z1882)
3512B (7HM210-213, 8RM455-457, 4TN258-259, 4TN266, 4TN269, 6WN459-470, 6WN472-474, 2GW239, 3ZW167-168, 3ZW170-174, 4AW380-383, 5AW78-80)
3516 (5SJ716-717, 5SJ722, 7KM64-71, 3SS323, 25Z6701, 25Z6714, 25Z6726-6728, 25Z6732-6733, 25Z6737-6738, 25Z6751, 25Z6756, 72Z555-556)
3516B (6HN559-564, 6HN567-579, 6HN581, 6HN583-585, 6HN588-596, 7RN1019-1021, 7RN1023, 7RN1025-1039, 7RN1041-1045, 7RN1048-1052, 7RN1054-1060, 7RN1062-1064, 7RN1068, 7RN1070-1072, 7RN1074, 7RN1077, 7RN1082, 7RN1085, 8CN172-173, 8KN391, 73Z932-934)
777D (AGC127-128, AGC130-155)
793C (4GZ257)
New or Spare Engines
3508B (2GR2284, 2313)
3516 EUI (2PK1607)
3516B (7TR970, 971)
Parts Needed
Quantities marked with an '*' are one per cylinder.
* - 8N4524 GASKET* - 6V9769 SEAL-O RING1 - 9X6772 STRAP-CABLE* - 1272176 SEAL1 piece of " bar or round stock, 11 to 15 inches in length, is also needed.
If Water Coolant Manifold Is Removed:
Some engine arrangements may require removal of the coolant manifold in order to access the 8N-7639 Elbows. This is due to the amount of peripheral iron located around the cylinder heads. If you are unfamiliar with the engine that you are working on, take the parts listed below as a precaution. The parts listed below will be needed only if the coolant manifolds are removed.
As needed
4 - 8N-1269 Gasket6 - 1W-8545 Gasket2 - 2W-0752 Gasket4 - 5P-9890 Seal O Ring If Coolant Passage Cannot be Unblocked
Some cylinder heads may have blockage that cannot be removed. In those cases, the cylinder head will need to be replaced. The parts listed below will be needed only if a cylinder head is replaced.
1 - 0R9775 Cylinder Head (MUI - Non Shot Peened)or1 - 0R9777 Cylinder Head (MUI & EUI Shot Peened)or1 - 0R9472 Cylinder Head ("B" Series)4 - 1261112 Seal-Water4 - 1261113 Seal-Water1 - 1445692 Gasket-Plate1 - 1106991 Gasket-Head2 - 5P0840 Seal-O-RingsAction Required
See the attached Rework Procedure.
Owner Notification
U.S. and Canadian owners will receive the attached Owner Notification.
Service Claim Allowances
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.
Attach.(1-Owner Notification)(2-Rework Procedure)Copy Of Owner Notification For U.S. And Canadian Owners
Rework Procedure
Rework Procedure Verification of Manufacturing Date
Cylinder heads with manufactured dates between 12/10/99 and 1/31/00 are suspect. Any cylinder heads with manufactured dates before 12/9/99