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Welcome to the 3500HD.com forum created October 2009

Author Topic: Eaton Fuller 6spd hydraulic clutch question  (Read 2479 times)

3500HD addict

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Eaton Fuller 6spd hydraulic clutch question
« on: April 15, 2015, 08:49:13 PM »
 Who has used the fuller transmission with a hydraulic clutch in a HD? Will the factory clutch master cylinder work properly enough to activate the Wabco-Fuller slave cylinder? I have found a FSO 8406A with less than a 100k miles on it, behind a Mercades engine in a Freightliner FL70 Buisness Class model. Also has factory Dual Disc clutch in it.
I have access to the whole truck just wondering if I should get the whole clutch pedal too?
« Last Edit: April 15, 2015, 08:52:30 PM by 3500HD addict »
Life is what happens while your busy makeing other plans.
1998 C3500HD getting a 5.9 Cummins in process

Raymo

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Re: Eaton Fuller 6spd hydraulic clutch question
« Reply #1 on: April 15, 2015, 09:10:05 PM »
I'm willing to bet there isn't enough volume in the chevy master cylinder. I had to modify a ford spec'd master with a larger bore to match the slave on my little getrag.
'94 3500-HD, Cummins, Getrag, NP205. Shortend rear frame with a Pickup Bed. Dana 60 front, stock 80 rear.

'03 2500-HD 8.1 and Allison

SSOR

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Re: Eaton Fuller 6spd hydraulic clutch question
« Reply #2 on: April 15, 2015, 10:11:58 PM »
The factory HD master cylinder doesn't displace enough fluid. I've built chambered cylinders to compensate for the volume difference in the past and that has worked well.

3500HD addict

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Re: Eaton Fuller 6spd hydraulic clutch question
« Reply #3 on: April 15, 2015, 10:21:20 PM »
Raymo what did u do for your engine mounts?
Life is what happens while your busy makeing other plans.
1998 C3500HD getting a 5.9 Cummins in process

3500HD addict

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Re: Eaton Fuller 6spd hydraulic clutch question
« Reply #4 on: April 15, 2015, 10:26:18 PM »
So I should try to graft in this unit
« Last Edit: April 15, 2015, 10:32:24 PM by 3500HD addict »
Life is what happens while your busy makeing other plans.
1998 C3500HD getting a 5.9 Cummins in process

SSOR

  • Single Axle Driver
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  • Posts: 44
  • Location: Faribault, MN
    • Scremin' Seeman Offroad
Re: Eaton Fuller 6spd hydraulic clutch question
« Reply #5 on: April 15, 2015, 10:59:37 PM »
I would.

GM Guy

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Re: Eaton Fuller 6spd hydraulic clutch question
« Reply #6 on: July 14, 2015, 12:23:42 AM »
I would look into master cylinders from mid 90s to early 2000s GM 6500-8500 trucks, as they shared the same basic cab as the smaller pickups (floor pan was different, firewall modded to accomodate the tilt hood) but IIRC the pedal setup is the same, so hopefully a master off one will work and be a cut-free bolt in solution.

 


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