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- Location
- Marion, AR.
I've decided to replace all the seals and boots on my M818's pto. The PTO boots have recently started leaking way more than usual. Since I don't know how much oil was in the transmission, or when it was last changed I've been wanting to change it out for some fresh. I'm putting in some Amsoil SEA 50W, which is good for the yellow metal. When I drained the oil out of the transmission, I noticed some shiny flakes in the oil. It looked like brass. Some of that is from the magnetic drain plug I wiped clean.
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As mentioned above, I don't know when the oil was last changed, or even what kind it is. I also have never serviced 5 ton transmission, so I didn't know what to expect. If this is excessive, or not, someone please let me know.
Now moving on to the second part, removing the PTO accessory drive, and replacing it with a standard plate. This part was the easiest. I took off the 6-bolt plate to inspect the inside and found more oil with yellow metal shavings in it. I suspected I would find something like this because the PTO is the lowest place where the transmission oil reaches, almost like a sump on the transmission.
The next part was a little aggravating. I've read on other post the retaining rings and seals are easy to get out. That might be for someone else, but not me. I must not have the right tools. Anyways, I had to use picks, a hardened nail punch, a mallet, and some hooks. I had to use the nail punch to poke some holes in the front of old seal so I could hook it and pull it out. Everything is pressed in, there are no lock rings or anything like that. I was able to get everything out, but when I went to put the new seals in, the new seals couldn't fit over the shaft. I don't want to tear them up, but wasn't sure these are the correct ones anyways. The original ones are metal frame, the replacements are all rubber. The metal frame ones are a National brand with part number 28 P 21. I took the originals up the parts store, and they can order some new metal frame ones for $4 each. I'm getting two when I get off from work tomorrow. I'll have more on this post when I get my new seals in. Sorry about the focus on some of the pictures, my camera doesn't like me.
The grade 8 bolts in the last photo is what I'm using to reattach my battery plate.
o
As mentioned above, I don't know when the oil was last changed, or even what kind it is. I also have never serviced 5 ton transmission, so I didn't know what to expect. If this is excessive, or not, someone please let me know.
Now moving on to the second part, removing the PTO accessory drive, and replacing it with a standard plate. This part was the easiest. I took off the 6-bolt plate to inspect the inside and found more oil with yellow metal shavings in it. I suspected I would find something like this because the PTO is the lowest place where the transmission oil reaches, almost like a sump on the transmission.
The next part was a little aggravating. I've read on other post the retaining rings and seals are easy to get out. That might be for someone else, but not me. I must not have the right tools. Anyways, I had to use picks, a hardened nail punch, a mallet, and some hooks. I had to use the nail punch to poke some holes in the front of old seal so I could hook it and pull it out. Everything is pressed in, there are no lock rings or anything like that. I was able to get everything out, but when I went to put the new seals in, the new seals couldn't fit over the shaft. I don't want to tear them up, but wasn't sure these are the correct ones anyways. The original ones are metal frame, the replacements are all rubber. The metal frame ones are a National brand with part number 28 P 21. I took the originals up the parts store, and they can order some new metal frame ones for $4 each. I'm getting two when I get off from work tomorrow. I'll have more on this post when I get my new seals in. Sorry about the focus on some of the pictures, my camera doesn't like me.
The grade 8 bolts in the last photo is what I'm using to reattach my battery plate.
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