Eaton Fuller Trannies...........

[CumminsPuller]

I have a 9-speed OD Eaton Fuller transmission. Just got the truck. First time I have ever driven one and let me tell you. . sure is a learning experience. No books or anything came with it. I was told that on 99% of the Eaton Fullers straight 50-wt oil is recommended? Yes/No, your opinion? And what is the capacity?



Jason

 

[bmoeller]

http://www.roadranger.com/products/trans/trans.htm

 

[cumminspwr01]

We use Mobile 50w synthetic. That is one of the oils that has to be put in to stay in warranty specs.

 

[CumminsPuller]

What kind of warranties do these usually carry? I am sure it is out of warranty, but just curious. Wouldn't this fall under one of those 'Acts' that states someting to the fact you have to use such and such oil/lube to stay within the warranty. But only holds true if they give it to you? Just wondering how they could require you to use mobile 1?



Jason

 

[CumminsPuller]

bmoeller,



I found my transmission in that link you provided but did not see anything on lube requirements or capacities. Trying to found out how much in that baby.



Jason

 

[CumminsPuller]

OK, found the capacity... . Looks like 12 pints... ... ... I was expecting more.



Jason

 

[C Schomer]

HMMM! I had old 10 and 15 speeds that used 30w motor oil and did fine. But that was before syns. I think you'll like shifting w/o the clutch, if you haven't already done that. Craig

 

[bmoeller]

http://www.roadranger.com/csee/MungoBlobs/tcmt0021-0503LR.pdf



Scroll down. There is a chart with the capacities.

 

[CumminsPuller]

Craig,



I have never driven anything like this before. It is taking some getting used to. Hardest part for me is downshifting. So far, I have had no luck. I can drop about one gear and thats about it. Then I am either to close to where I have to stop or I just can't catch another gear.



Jason

 

[bmoeller]

When you take it out of gear, what RPM are you at? And how high are you raising the RPMs to match speed? Dropping one gear doesn't require a lot of RPM.



If you are at about 1000RPMs, take it out of gear, bump the throttle to about 1400 or so. Should be able to float it in without the clutch. Should work out pretty close.



When empty, I normally drop 2 at a time.

 

[CumminsPuller]

Well I think that is part of my problem right there. My RPM's are much higher than yours when I pop it out of gear. I have been trying to pop it out at around 14-1500. I am afraid I will be lugging it at those low RPM's. Seems to be harder to pop it out the lower the RPM gets? Or at that low of speed do you tap the clutch to get it to pop out?



Jason

 

[bmoeller]

When down shifting, slowing down to 1000 RPMs won't lug the engine. Most electronically controlled engine brakes on the semi trucks, shut off at 800, to prevent killing the motor.



It may take some practice, but if you do it right, there won't be any pressure on the shift lever. Should slide right out. If not, use the clutch to take the pressure off. Sometimes, lightly tapping the throttle will be enough to take the pressure off.



Going for the next lower gear at 14-1500, you will really have to rev the engine. It may not rev high enough. Just depends on how the pump is setup. On one truck I drove, the engine topped out at a whopping 1800. And no O/D, 52 mph tops.

 

[CumminsPuller]

There is an exhaust brake on the truck but it is not functioning at the moment. But tomorrow I will try for the lower RPM's. Thanks



Jason

 

[bgilbert]

As stated before, at whatever rpm you kick it out of gear, add 300-400 rpm with throttle and put in next lower gear. -come out at 1400, rev it up to 1700-1800 place in next lower gear etc.

You should find a backroad, empty industrial park and practice on low side of transmission. 1,2,3,4- then 4,3,2,1. 1,2,3,4- 4,3,2,1. Say rpms at 1300 in 4, goose to 1600, drop to 3, brake down to 1300, goose/rev to 1600, drop to 2nd, brake to 1300, rev to 1600 drop to 1st. Then just opposite, speed in gear to 1600, take out of gear watch as rpm drops 300-400rpms then

shift to 2nd, speed to 1600 shift to 3rd, speed to 1600 shift to 4th. Or count 1-2-3 for shifts, 1 for taking out of gear, 2 for pause in neutral, 3 for putting in next higher gear. 1 sec for each give or take.

practice this til you can up/down shift good enough to take it out on big road or road where you can use high range of transmission. If you can accomplish this on low side of transmission, you'll do the same for high range.

BTW, driving this truck doesnt it require a CDL? You didn't shift gears before to obtain this cdl?

 

[CumminsPuller]

bgilbert,



No, I did not shift gears before to obtain my CDL. I have everything except air brakes on my CDL. I am a hot shot driver and liscensed for 36K with my one ton and 40' GN trailer. Just bought that FL-50 with a 9-speed. It has hydraulic disc all the way around, so no change to my liscense is needed.



Thats a good idea about, 1-2-3-4-3-2-1. I will have to do that this weekend.



Jason

 

[RHARVEY]

If I could only shift my NV4500 like that... I have watch my buddy with his 97 Peterbilt w/18 speed. . walk up and down the gears like hot butter.

What would it take to put a 9 speed in our trucks. I know it would be cheaper to put in a US Gear aux box but you still have the nv4500 as the main. I can say much on durability... I have 218k on the stock box. The only thing that I have added is an input shaft kit from South Bend.



Rick

 

[bmoeller]

If you have a 2wd truck, it would be much easier to do. No t-case to deal with. I know it has been done before.



I would like one myself. Thinking of buying an old cheap Class 8 for the 13spd transmission. Don't know that I will though. Would be a pain having to also put in a divorced t-case. Oh well, maybe someday.

 

[BBarry]

Just keep practicing and before you know it will be second nature. Do you know about the clutch brake?

 

[CumminsPuller]

Barry... ... . Are you referring to when you are sitting still and push in the clutch all the way to the floor so you can get in gear? But if I am moving you do not want to put it all the way to the floor correct?



Jason

 

[BBarry]

You got it.