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Discussion Starter #1
I would like to know if anyone has added a foot throttle control to their Generation 2 series tractor. I am looking at making something up as my 4040 will be used mainly out on the road and foot speed control makes safer driving and gives smoother gear changes, especially puling a 6 ton trailer loaded up with my crawler dozer. I know that kits were originally available but chances of finding these parts these days would be slim as not many of these tractors get parted out in our area.

John
 

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I thought that the 40 series tractors had foot throttles? Maybe not.
 

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Discussion Starter #4
The total kit, to buy it here through JD is about $650 au or $460 US. It all mounts under the floor and not easy to fit apparently. I am thinking of making up my own kit using an ex Toyota accelerator pedal assembly which I already have got ( safely stored away somewhere in my shed) and using a flexible cable to connect to a modified governor control arm with a pair of slots in it. The hand throttle would go to one slot and the foot control to the other slot so that one can over-ride the other.
 

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Discussion Starter #5
Well, I have completed my foot throttle upgrade now and works a charm.

I ended up starting from scratch and created my own design which utilized the existing foot pedal mount at the side of the center console. A flexible 1/16" bike type bowden steel cable was used to connect from a lever on the pedal shaft to the modified governor control rod and when the pedal is pressed down, the governor rod is pulled forward. The rod was cut and a sleeve welded to the front section. The rear section of the rod is a slip fit inside the sleeve, and when the hand throttle speed is increased, this overrides the foot control. A tension spring is used as shown to keep the slip joint in the closed position and a second spring under the floor returns the pedal to the idle position (or where-ever the hand throttle is set to). Below are some photos of the completed arrangement.

If anyone would like measurements or more details, please send me a message.

Also included are a photo taken on the road to a local country show (a 15 mile drive) with my David Brown 50TD (50hp) dozer loaded on my trailer and another at the show.
 

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I must say you did a good job and the engine is very clean! :good2:
 
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Discussion Starter #7
Hi Zebrafive, thanks for your comments. The only oil leaks I have got over the whole tractor are the rear hydraulic SCV couplings on one side ( I already have a seal kit for this) and a very small leak somewhere around the control valve just in front of the transmission oil filter. Not bad for a tractor 37 years old even if it has done less than 2300 hours. The two major leaks I had were the 3PL load sensing rod seals and the gasket under the engine oil filter housing base joint.
 
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