Usage:
D343, D346, D348, D349 And D353 Marine Engines
Description of Change: The seal group, used for parts replacement of the raw water pump shaft seal on the above models, now has all the parts that are needed for seal replacement. A seal installation tool has been added to this seal group. See Illustration 1. The purpose of the installation tool is to put the seal parts in the correct position during assembly. Seals that are assembled with seal parts in the wrong position can have early failures. Also, the installation tool makes installation of the seals easier and faster. The installation tool can not be ordered separately.
Adaptable As: Direct replacement.
INSTALLATION:
NOTE: Use clean water only as a lubricant to make the installation of the seal easier.
1. Use the installation tool to install the seal and seal ring onto the pump shaft. Use the flat end of the installation tool. Use hand pressure only. See Illustration 2.
Illustration 1. 5N9547 Seal Group.
Illustration 2. Installation of seal and seal ring.
2. Install the washer, retainer, bellows and drive band, with the installation tool, until the washer makes light contact with the ring. Use the end of the installation tool that has the counterbore. Use hand pressure only. See Illustration 3.
3. Install the spring and impeller. See the Service Manual.
Illustration 3. Installation of washer, retainer, bellows and drive band.