PLATE-INPUT DRIVE 9L7871 - Caterpillar

3606 (8RB),
3608 (6MC),
3612 (9RC),
3616 (1PD),
3618 (2MW) EnginesReference: Operation and Maintenance Manual, SEBU7134, "3600 Diesel Marine Monitoring System"The 115-7954 Frequency Transmitter (Acromag®), as received from the supplier, is not properly configured for use in the Marine Monitoring System (MMS). When new frequency transmitters are purchased for replacement in the MMS, they must be reconfigured for the proper frequency range.
Procedure To Reconfigure The 115-7954 Frequency Transmitter
Illustration 1.
External view of the 115-7954 Frequency Transmitter. Arrows indicate pry points. Be careful not to insert the screwdriver too far into the case. Inserting the screwdriver too far may damage the internal circuit boards. Insert the screwdriver only far enough to pry apart the two halves of the case.1. Separate the two halves of the frequency transmitter case. See Illustration 1. Use a screwdriver with a thin blade to carefully pry between the two halves, at the areas indicated by the arrows. Work evenly around the perimeter of the case to gradually separate the two halves until they come apart.
Illustration 2. Exploded view of the 115-7954 Frequency Transmitter. Input board (1).Output board (2). Location of range selection jumper pins (X).Board connection pins (Y). 2. See Illustration 2. Be careful not to damage the board connection pins (Y). Pull the two circuit boards straight apart to separate the input board (1) from the output board (2).
Illustration 3.
VIEW OF AREA (X). The proper location for jumper (3) is shown.3. See Illustration 3. Note the location of the jumper (3). If the jumper is not in position "H", remove the jumper by pulling the jumper straight off the pins. Push the jumper onto pins "H".4. Make sure that the board connection pins (Y) are matched correctly. Then carefully assemble the output board (2) to the input board (1). Press the boards together until the connection pins are fully seated.5. Install the two halves of the frequency transmitter case.6. Follow the procedure "Testing And Calibrating A Frequency Transmitter" in the Reference document (SEBU7134).