PRODUCT SUPPORT PROGRAM FOR REWORKING CERTAIN 3412C SOUND ATTENUATED ENCLOSURE GENSET PACKAGES Caterpillar

PRODUCT SUPPORT PROGRAM FOR REWORKING CERTAIN 3412C SOUND ATTENUATED ENCLOSURE GENSET PACKAGES

Usage:

SEBE8450

July 29, 2003
U-197
A-138

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*before or* *after failure*	PRODUCT SUPPORT PROGRAM FOR REWORKING CERTAIN 3412C SOUND ATTENUATED ENCLOSURE GENSET PACKAGES
0025		PS41392

NOTE: This Program can be administered either before or after failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS41392" as the Part number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and use "T" as the SIMS Description Code. If administered after failure, use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.

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.

TERMINATION DATE

July 31, 2004

PROBLEM

Some 3412C, 800 kW standby rated, sound attenuated enclosure packages may overheat when operated in high ambient temperature conditions.

AFFECTED PRODUCT

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Model

Identification Number

3412C

9EP179, 221, 222, 254, 258, 322, 323, 326, 327, 332, 334, 335, 373, 435, 474, 496, 498, 516, 529, 544, 591, 602, 624, 632, 652, 677, 723, 745, 785, 786, 801, 804, 870, 1046, 1071, 1085, 1116, 1372, 1384, 1414, 1463, 1505, 1584, 1588-1591, 1595, 1601, 1615, 1619, 1621, 1623, 1626, 1631, 1637, 1640-1642, 1644, 1646, 1649-1651, 1654, 1694, 1741, 1814, 1929, 1946, 2004, 2026, 2061, 2081, 2082

BCW158, 186, 200, 201, 242, 243, 247, 248, 263, 284, 286, 361, 362, 383, 402, 408, 412, 433, 451, 458, 459, 466, 467, 484, 528, 568, 587

PARTS NEEDED

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Qty	Part Number	Description
1	7C4911	ADAPTER-FAN

ACTION REQUIRED

See the attached Rework Procedure.

SERVICE CLAIM ALLOWANCES

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Product smu/age whichever comes first	Caterpillar		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts	Labor Hrs	Parts	Labor Hrs	Parts	Labor Hrs
0-60 mos	100%	3.0	0	0	0	0
NOTE: This is a 3.0?hr job.

PARTS DISPOSITION

Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.

Attach. (1-Rework Procedure)

Rework Procedure

Remove the 1497867 top radiator fan belt guard to gain access to the top belt pulley.
Remove the radiator fan guard(s) to gain access to the fan-to-adapter bolts.
Loosen the four (4) bolts on the radiator fan belt tensioner.
Loosen the belts enough so the top pulley is free to spin. (Spinning the pulley and fan is necessary to gain access to each fan-to-adapter bolt.)
Disconnect the radiator fan from the adapter.
Remove the shorter 6N4088 adapter from the belt pulley.
Install the longer 7C4911 fan adapter onto the belt pulley. Torque the adapter-to-pulley bolts to 47 +/- 9 Nm (34.7 +/- 6 ft-lb).
Install the fan onto the end of the adapter. Torque the fan-to-adapter bolts to 105 +/- 20 Nm (77.4 +/- 14.8 ft-lb).
Verify that the fan will not contact adjacent parts, particularly the shroud, during operation.
Adjust the tension of the radiator fan belts to 712 +/- 111 N (160 +/- 25 lb) for new belts and to 445 +/- 44 N (100 +/- 10 lb) for used belts.