bean 85 #1 Posted October 28, 2013 (edited) decided to flush the trans on the '73 8hp I just bought. it was a little hard to shift at times. the boot fit decently, so I figured it wouldn't have too much water in it. it did have some water mixed in with the gear lube. looked like hot fudge when I drained it. I filled it with kerosene and drove it around for a few minutes, then drained. looked like coffee. I went to fill it and it will only hold 1 qt of 90w . the manual says 3pts. it is 1/4- 1/2" below the top of the filler opening. should I fill it to flush/overrunning? btw, it shifts great and is easier to push around the garage Edited October 28, 2013 by bean Share this post Link to post Share on other sites
boovuc 1,090 #2 Posted October 28, 2013 Sounds like it didn't all drain. Is it cold where your at? Did you get the transmission warmed up well before draining? I have aimed an infrared heater at the rear end of mine to get the metal warmed up and I always have the gear oil bottles in the house before I change out a rear end. You will never get all of it out but you should have gotten more than you did. Share this post Link to post Share on other sites
sorekiwi 761 #3 Posted October 29, 2013 Also when draining the trans, lift the front of the tractor as high as you can. There is a boss around the middle bolt that traps oil in the front part of the transmission. Raising the front of the tractor will empty a lot of that oil into the section with the drain plug. This is a hydro, but the pic shows the boss that acts as a dam to the front part of the case draining. 2 Share this post Link to post Share on other sites
Coadster32 793 #4 Posted October 29, 2013 Great visual Mike! For those that haven't had one apart, it really shows what you said...raise it up as high as you can. Share this post Link to post Share on other sites
bean 85 #5 Posted October 29, 2013 (edited) Also when draining the trans, lift the front of the tractor as high as you can. There is a boss around the middle bolt that traps oil in the front part of the transmission. Raising the front of the tractor will empty a lot of that oil into the section with the drain plug. This is a hydro, but the pic shows the boss that acts as a dam to the front part of the case draining. thanks for the picture. that makes sense. I will see what the oil looks like after I drive it around a little more I am swapping in an 8spd this winter, so I will probably top it off and let it sit. Edited October 29, 2013 by bean 1 Share this post Link to post Share on other sites
