vmen84 61 #1 Posted February 28, 2021 need instruction on how to change the hydraulic oil and filter in a 1974B 100 B 100. I know in a previous thread it was mentioned that it needs to be amber in color. Does it need to be drained the same way you would change the oil in the motor or would I just fill it back up in the oil compartment under the seat I'm assuming it would be 5W 30 sae oil as well? I was also wondering will I had to remove the world to get to the filter its self? I know the old saying goes the only wrong question is the one you don't ask. I'm just trying to make sure I don't mess anything up keep in mind this is the first time I've ever done anything like this myself so it seems to be a process. I wish they had instructional videos I tell you that much because I'm a visual person so this is going to be interesting. Share this post Link to post Share on other sites
squonk 41,164 #2 Posted February 28, 2021 If it's a hydro there is a 1/4" allen head drain plug on the bottom of the transmission. Jack up the front to get all the oil out. Use a Napa 1410 or Wix 5140 filter and about 4.5 qts. of Mobil 1 10w30 or 10w40. DO NOT USE A FRAM FILTER! 3 Share this post Link to post Share on other sites
pfrederi 17,741 #3 Posted February 28, 2021 The drain plug on the bottom of the tranny. Circled. 1 1 1 Share this post Link to post Share on other sites
Pullstart 62,922 #4 Posted February 28, 2021 And in green, the reason why it’s advised to jack up the front as high as possible. You’re trying to get all the old oil out from in front of that hump. 1 1 Share this post Link to post Share on other sites
vmen84 61 #5 Posted February 28, 2021 Do I need to change the filter every season or every other season and I'm assuming I would put oil inmount underneath the seat? Share this post Link to post Share on other sites
DennisThornton 4,769 #6 Posted February 28, 2021 1 hour ago, squonk said: If it's a hydro there is a 1/4" allen head drain plug on the bottom of the transmission. Jack up the front to get all the oil out. Use a Napa 1410 or Wix 5140 filter and about 4.5 qts. of Mobil 1 10w30 or 10w40. DO NOT USE A FRAM FILTER! I've seen so many reviews and SO many FRAM products cut open that I'm having a very hard time putting the words FRAM and filter next to each other but I do feel some obligation to counter the HUGE amounts of advertising dollars FRAM spends to say that I don't think that FRAM makes filters, just containers that fit where a real filter should be. 2 Share this post Link to post Share on other sites
vmen84 61 #7 Posted March 1, 2021 Could you use the dexron II transmission fluid because of the hydraulic system? in place of the 10w30 or 40? Share this post Link to post Share on other sites
rjg854 11,389 #8 Posted March 1, 2021 Use whatever was in there when you drained it. Never mix the two. You'll only have problems if you switch from oil to transmission oil. If the fluid is amber in color it's regular oil. If it looks red, it's transmission fluid. 1 Share this post Link to post Share on other sites
vmen84 61 #9 Posted March 1, 2021 ok thanks thanks for the input. ill have to see and go from there Share this post Link to post Share on other sites
vmen84 61 #10 Posted March 5, 2021 I failed to mention that I'm one-handed so I only use one arm for everything I do Always looking for ways to do things easier. I've come up with two ideas I found this video on YouTube that I will post below if that's allowed? I also had this crazy idea then maybe I could use a Topsider vacuum pump just for the hydraulic transmission I'm not exactly sure if I could put the pump tubing in the spout underneath the seat or if I would have to do it from below? If I had to do it from below wouldn't gravity work against me? In a perfect world I would just be able to use the pump in the spout underneath the seat. This would be awesome if I could do this so I just thought I would ask you guys your thoughts on this I'm also going to post a video of the DIY oil change mechanism your thoughts are much appreciated. 1 Share this post Link to post Share on other sites
krystolo 504 #11 Posted March 5, 2021 27 minutes ago, vmen84 said: I failed to mention that I'm one-handed so I only use one arm for everything I do Always looking for ways to do things easier. I've come up with two ideas I found this video on YouTube that I will post below if that's allowed? I also had this crazy idea then maybe I could use a Topsider vacuum pump just for the hydraulic transmission I'm not exactly sure if I could put the pump tubing in the spout underneath the seat or if I would have to do it from below? If I had to do it from below wouldn't gravity work against me? In a perfect world I would just be able to use the pump in the spout underneath the seat. This would be awesome if I could do this so I just thought I would ask you guys your thoughts on this I'm also going to post a video of the DIY oil change mechanism your thoughts are much appreciated. Wow! What a great idea! No mess! thanks for posting this thread. I’m a new WH owner and haven’t done a lot of maintenance myself. Something new to learn! Jumping in! Share this post Link to post Share on other sites
The Tuul Crib 7,336 #12 Posted March 6, 2021 We use vacuum to pull all the liquids out of our tractors and transmissions at work. It's so easy and you never have to worry about putting the drain plug back in or forgetting to! Share this post Link to post Share on other sites
vmen84 61 #13 Posted March 6, 2021 For example say if I didn't end up using the method in the video can I use the top side vacuum pump? Because I have one of those and I was thinking I could put it in the tube that's underneath the seat? The vacuum pump I'm talking about I got from Northern tool and I use it to change the oil in my car so I was just curious Share this post Link to post Share on other sites
vmen84 61 #14 Posted March 6, 2021 34 minutes ago, krystolo said: Wow! What a great idea! No mess! thanks for posting this thread. I’m a new WH owner and haven’t done a lot of maintenance myself. Something new to learn! Jumping in! I always try to find reasonable ways around things and if it helps me and somebody else why not. 1 Share this post Link to post Share on other sites
