HANDLE 4246727 - Caterpillar

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.
COPY OF OWNER NOTIFICATION FOR U.S. AND CANADIAN OWNERS
XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999
SAFETY - PRODUCT IMPROVEMENT PROGRAM FOR THE INSPECTION AND POSSIBLE REWORK OF THE BUS MOUNTING HARDWARE USED WITH MASTERPACT CIRCUIT BREAKERS (800 TO 6,300 AMP) ON CERTAIN C32, 3512, 3512B, 3516, 3516B, 3516C, AND C175-16 GENERATOR SETS, PM3516, AND PMG3516C POWER MODULES
MODELS INVOLVED - C32, 3512, 3512B, 3516, 3516B, 3516C, C175-16, PM3516, PMG3516C
Dear Caterpillar Product Owner:
A potential nonconformance with the bus mounting hardware used with Masterpact NW circuit breakers (800 to 6,300 Amp) has been identified on certain C32, 3512, 3512B, 3516, 3516B, 3516C, and C175-16 Generator Sets, PM3516, and PMG3516C Power Modules. These circuit breakers may have a nonconforming washer on primary terminals mounting screws. If the washer is not conforming, there is a risk of low clamp force between the terminal and the breaker/cradle. This can result in overheating at the loose connection. Should this occur there is a potential for property damage, or that the circuit breaker may not operate as intended. You will not be charged for the service performed.
Contact your local Caterpillar dealer immediately to schedule this service. The dealer will advise you of the time required to complete this service.
Please refer the dealer to their Service Letter dated 26Feb2013 when scheduling this service.
We regret the inconvenience this may cause you, but urge you to have this service performed for your added safety and satisfaction.
Caterpillar Inc.
Identification #(s)
Attached to 26Feb2013 Service Letter
Rework Procedure
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. Remove the generator covers to get access to the rear of the breaker. (see Image 1.1.1).
Image1.1.1
A. BREAKERS WITH ONE LEVEL OF COPPER:
3. Mark old M8 screw with red marker (or any other color to identify bolts that have not been replaced). See Image 1.2.1.
Image1.2.1
4. Remove and replace each M8 bolt individually until all M8 bolts have been replaced with new as per the instructions below:
Install new hardware by hand starting each M8 screw and washer assembly and tighten to 16 Nm. Mark each new M8 screw and washer assembly with a green permanent marker or with a different color marker than used previously (this is to confirm all bolts have been changed and tightened to the proper torque). See Image 1.3.1.
Image1.3.1
5. IMPORTANT: Record the breaker s/n, date code, total number of bolts replaced and number of washers with cracks if any. This information is going to be needed to submit