MANIFOLD 9L5848 - Caterpillar

CONFIDENTIAL TIBU3871-01
TECHNICAL INFORMATION BULLETIN October 8, 2003
Generator Set This Technical Information Bulletin replaces the June 11, 2003 TIB, "Shock hazard for the VR-6 and K65-12B Voltage Regulators". DISREGARD THE JUNE 11, 2003 TIB.
1DZ, 1EZ, 1FZ, 1GZ, 1HZ, 1JZ, 1KZ, 1LZ, 1NW, 1RS, 23Z, 24Z, 25Z, 2AM, 2HW, 2WB, 2WJ, 3PG, 4AW, 4BZ, 4EK, 67Z, 70Z, 73Z, 78Z, 7WG, 81Z, 83Z, 85Z, 8FS, 8JJ, 8NS, 9DS, 9EP, 9ES, 9HK, 9NR, 9PL, BAK, BAX, BCW, BGX, BLF, BLG, BMB, CAH, CBX, CCB, CMC, CMD, CMJ, CNB, CNF, CSZ, CTA, CTB, CTC, CTL, CTP, CTS,
DAP, DAR, FDN, KPS
Component Code: 1410 4467SUBJECT: Shock hazard for the VR-6 and K65-12B Voltage Regulators
PROBLEM:
It has been determined that a potential of AC voltage exists on the heat sink assemblies which extend from the voltage regulator body for the following part numbers: 202-8638, 219-4078, 219-4079, 219-4080, and 219-4081. The AC voltage is present while the generator set is operating. The AC voltage has a residual duration of eight (8) minutes once the generator set is stopped. A warning label may be attached to the voltage regulator.
VR-6 and K65-12B Voltage Regulator
SOLUTION:
Caution must be exercised when performing any service related adjustments to the VR-6 while, the generator set is in operation or for a duration of eight (8) minutes after the generator set has been stopped. Authorized service personnel should utilize the appropriate service tools while working on the VR-6 (i.e. Rubber Gloves, Screw Drivers with Rubber Coated shanks, etc.)
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