jkmechanic wrote:Ok, Now I understand. So i will at least need a output shaft seal.
mmm... not exactly. You are going to need:
1. the worm
2. the driven spur gear
3. the two bearings on the worm shaft
4. 1 tube gear oil silicone sealant
5. 2 oil seals
6. thrust washer for the output shaft
7. possibly new output shaft if it has become pitted and worn out near the seal from excessively wet coal - if it has, this will happen again in short order.
8. 1 qt. of 90+ weight gear oil
9. 2 tubes of MoS2 additive for gears
I've rebuilt quite a few of these things, not replacing the necessary parts will just lead to more damage. When the worm and spur get worn to a certain point, the gears don't mesh properly, this builds heat under load and tends to send metal pieces into the gear case oil which takes out seals, bearings and other gears. you shouldn't re-use these gears. This whole case needs to be disassembled, cleaned, and seals and worn parts replaced. If you repair it right, then fill it with the proper oil and mos2 additive (stop leak won't do anything for you) (and keep sopping wet coal out of it) your transmission will last for many, many, years without any other replacements - check the oil at least twice a month.