Engine serial number please?
If it is the bolt with a 30mm head, it is torqued to 370 ftlb (500 Nm).
There are two different seal configurations for that engine, so the removal tool could be one two different ones. Do you have a seal with a separate speedi-sleeve, or a seal with the speedi-sleeve as one integral unit (Deere calls it the Unitized seal)?
As for the installation tool, they all use the same tool. You might get away without tools for the seal removal (although the tool will make it much easier), however the installation tool is a must. All the new seals are the type with a built-in speedi-sleeve and without the installation tool, the seal will be ruined if installed without it.
Google JDG992 for the old seal with separate speedi-sleeve. This tool is just for speedi-sleeve removal, not the seal, which you would remove using some sort of generic seal puller.
If it is the unitized seal, Google JDG1923 for the removal tool.
For installation, Google JDG954.
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