Eaton Fuller 7 speed transmission

[Hay Dude]

Anyone ever have the pleasure/pain of driving one? Or know the transmission extensively?

Not an 8LL, 9 speed, 10 speed, 13speed road ranger or 18 speed. Those are great, but wondering if anyone has ever driven a Eaton Fuller 7 speed?
It’s a twin countershaft transmission, model # T14607B

I owned a Spicer “Easy Shift” 7 speed, but that’s a smaller/lighter duty trans.

 

[herringchoker]

Well, I had the pain of driving a few. When I drove ready mix, some of our older trucks had this box. They are heavy duty and I'm not aware of any durability problems with them. I was used to Eaton Fuller 13 and 15 speed RoadRangers and my ready mix assignments were usually 8LL's. The 7-speed worked and shifted fine except it had (IIRC - it's been a lot of years) 3 creeper gears and only 4 road gears with one gigantic step between them, so they were a bit of a dog on the highway. These were behind L-10 Cummins and 3306 Cats. An older driver clued me in to just drive it like a 5 speed, no range shifting and not all those creeper gears, but still a dog.

 

[Hay Dude]

Well, I had the pain of driving a few. When I drove ready mix, some of our older trucks had this box. They are heavy duty and I'm not aware of any durability problems with them. I was used to Eaton Fuller 13 and 15 speed RoadRangers and my ready mix assignments were usually 8LL's. The 7-speed worked and shifted fine except it had (IIRC - it's been a lot of years) 3 creeper gears and only 4 road gears with one gigantic step between them, so they were a bit of a dog on the highway. These were behind L-10 Cummins and 3306 Cats. An older driver clued me in to just drive it like a 5 speed, no range shifting and not all those creeper gears, but still a dog.

Drive it like a 5 speed as in skipping lower gears, or skipping over some of the middle gears?
Like start off in 3 and row up to 7? Or use 1 through 5?

 

[herringchoker]

As I recall, use 1 thru 5.

 

[Farmer495]

As I recall, use 1 thru 5.

This pattern the pattern?

Fuller transmission 7 speed shift pattern PRO GEAR & TRANSMISSION INC 19958 | eBay

Fuller transmission 7 speed shift pattern decal. for T8607A, T8607B, T11607A, T11607B, T14607A, T14607B, TX14607B, Part # 19958 for 7 speed models. FULLER TRANSMISSION PARTS AND REPAIR. GENUINE FULLER TRANSMISSIONS, AVAILABLE ASK US ABOUT OUR GREAT PRICING.

www.ebay.com

 

[herringchoker]

No....this pattern:

Eaton Fuller 7 Speed Low Low Transmission Shift Pattern RTO, RTOF 20464 | eBay

Les meilleures offres pour Eaton Fuller 7 Speed Low Low Transmission Shift Pattern RTO, RTOF 20464 sont sur eBay â Comparez les prix et les spécificités des produits neufs et d'occasion â Pleins d'articles en livraison gratuite!

www.cafr.ebay.ca

 

[herringchoker]

That's 1 thru 5 on the main transmission, which on the shift pattern would be LO, 4, 5, 6, 7.
Sorry for confusing things.

 

[Hay Dude]

This pattern the pattern?

Fuller transmission 7 speed shift pattern PRO GEAR & TRANSMISSION INC 19958 | eBay

Fuller transmission 7 speed shift pattern decal. for T8607A, T8607B, T11607A, T11607B, T14607A, T14607B, TX14607B, Part # 19958 for 7 speed models. FULLER TRANSMISSION PARTS AND REPAIR. GENUINE FULLER TRANSMISSIONS, AVAILABLE ASK US ABOUT OUR GREAT PRICING.

www.ebay.com

View attachment 2392323

Above is the shift pattern for the twin countershaft heavy duty Eaton/Fuller. It requires double clutching until you get familiar enough with it to shift without clutch.


Below looks like the Spicer “EZ shift” 7 speed I had in my 94 International. This was not a twin countershaft and did not require double clutching. You shifted it like an ordinary pickup truck manual transmission.

View attachment 2392324

 

[Hay Dude]

No....this pattern:

Eaton Fuller 7 Speed Low Low Transmission Shift Pattern RTO, RTOF 20464 | eBay

Les meilleures offres pour Eaton Fuller 7 Speed Low Low Transmission Shift Pattern RTO, RTOF 20464 sont sur eBay â Comparez les prix et les spécificités des produits neufs et d'occasion â Pleins d'articles en livraison gratuite!

www.cafr.ebay.ca

Thats a different pattern than the “straight 7”.
That has a electric shifted lo-hole switch. Never saw one.

 

[Lineman North Florida]

When I was an apprentice ( about 40 years ago ) we had some old hi-line trucks that we used all the time that had a transmission with 2 gear shift sticks, seems like we did most of the shifting with the far right stick and the left stick was more of a hi-lo/ super low type gear, but I think they were like 5 speeds with reverse in the main gear shift pattern, it's been a long time but I could still drive one today after studying it for a minute, it used to be comical watching anybody new to the crew jump in the cab and see those 2 gear shift sticks.