BOLT-LOCKING 0310217 - Caterpillar

REBE9042-04
05Nov2012
(Revised 08Apr2014)
O-541
After Failure Only
PRODUCT SUPPORT PROGRAM FOR REWORKING THE EXCITER ROTOR ON CERTAIN 3512, AND 3512B GENERATOR SETS
4457 PS52328
This Program can only be administered after a failure occurs.The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS52328" as the Part Numberand "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.
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.
This Revised Service Letter replaces the 05Nov2012 (Revised 20Mar2013) Service Letter. Changes have been made to the Affected Product, and Action Required.
TERMINATION DATE
30Nov2014
PROBLEM
The existing 253-9802 Exciter Rotor may become loose on the rotor shaft on certain 3512, and 3512B Generator Sets with SR5 1400 frame generators. If the existing exciter rotor becomes loose, resultant damage to the generator and its components may occur. Rework of the exciter rotor and/or rotor assembly will be required if the exciter rotor becomes loose.
AFFECTED PRODUCT
Model Identification Number
3512 YAK00181, 183, 222-224, 261-263, 265-266, 280-281, 284, 286, 299-300, 315-316, 331-332, 346-347, 373, 377-378, 390-391, 393-394, 414, 418, 440, 464, 505-507, 510, 522, 530, 552
3512B YAM00193-00196, 208-215, 231-232, 244-247, 260, 274-275, 277-279, 283-284, 322-324, 334, 336-337, 348, 427-430, 447-449, 454-456, 500-501, 506, 509, 520-521, 577, 592-594, 615
PARTS NEEDED
No parts needed for this program
ACTION REQUIRED
1. Isolate the generator set before commencing any work on the unit, open generator set breaker, activate Emergency Stop, disconnect the battery cables and either disconnect or open the control circuit breaker for the AC power supply to the battery charger. Ensure all health and safety requirements are adhered to at all times. Also, ensure proper Lock Out-Tag Out procedures are followed at all times while work is being performed on the machine. Lock out generator operation and disconnect/lockout all power sources before commencing any work.
2. If there is evidence that the exciter rotor is loose, remove generator. Refer to Disassembly and Assembly, KENR5284 for SR5 instructions. The symptoms of a loose exciter rotor may include the following conditions: damaged main rotor lead cables and/or lugs, excessive vibration, abnormal noise. Please include service history with the claim.
3. Send generator to the Leroy Somer Service Center in Dubai, UAE for repair. See below for contact information.
Intersel Dowding & Mills
General Manager
Jebel Ali Free zone
P.O. Box 10892
Dubai
UAE
TEL +971 (0)4 8833661
FAX +971 (0)4 8833662
4. Reinstall generator and verify proper operation. Refer to Disassembly and Assembly, KENR5284 for SR5 instructions.
SERVICE CLAIM ALLOWANCES
Product smu/age whichever comes first Caterpillar Dealer Suggested Customer Suggested
Parts % Labor Hrs% Parts % Labor Hrs% Parts % Labor Hrs%
0-20000 hrs,
0-60 mo 100.0% 100.0% 0.0% 0.0% 0.0% 0.0%
This is a 36.0-hour job
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.