SAME Iron/Deutz 150.7 4WD Shaft replacment

[Niall310]

The splines on the 4WD stub shaft out of the gearbox have become worn, causing a vibration.

The dealers have said it is common as the 4wd shaft guard means most people don't see the grease nipple on the female end of the shaft.

The 4wd shaft is rigid and the sliding is done on the splines on the stub.

I've heard of people making sliding 4wd shafts and clamping the female end to the gearbox stub shaft to remove the play but still allow sliding. This means the shaft in the gearbox wouldn't need replaced.

Does any one know of such an adaption that would be of help?

Thanks in advance!

 

[ridger]

The splines on the 4WD stub shaft out of the gearbox have become worn, causing a vibration.

The dealers have said it is common as the 4wd shaft guard means most people don't see the grease nipple on the female end of the shaft.

The 4wd shaft is rigid and the sliding is done on the splines on the stub.

I've heard of people making sliding 4wd shafts and clamping the female end to the gearbox stub shaft to remove the play but still allow sliding. This means the shaft in the gearbox wouldn't need replaced.

Does any one know of such an adaption that would be of help?

Thanks in advance!

My father built mine up years ago with welder and small grinder then a new coupling packed with grease, still going strong

 

[joe soapy]

first fix the cause, it will be the rear pivit bearing on the axle, then get two old collars, cut them both in half and weld the best halves together,
assuming the box shaft is not toooo far gone

 

[Niall310]

My father built mine up years ago with welder and small grinder then a new coupling packed with grease, still going strong

That's something i never thought of, it would be difficult to get it right i'd imagine but by the sounds of it, it's possible!

 

[Niall310]

first fix the cause, it will be the rear pivit bearing on the axle, then get two old collars, cut them both in half and weld the best halves together,
assuming the box shaft is not toooo far gone

The cause is that there was no grease where the male and female splines slide on each other and so they started to wear. The box shaft isn't too bad but there is definitely wear. Unfortunately/fortunately i don't have two old collars and they're an odd ball 25 spline.

 

[CB. Agrimech]

Does it have centre bearing on the shaft and does tractor have a loader fitted?

 

[Niall310]

Does it have centre bearing on the shaft and does tractor have a loader fitted?

Like a carrier bearing?

No loader on her.

 

[CB. Agrimech]

Like a carrier bearing?

No loader on her.

Yes? Just sounds like worn front axle swivel bushes has caused this as axle starts to lie off centre and put strain on 4wd shaft which will wear couplers in no time

 

[Yale]

Yes? Just sounds like worn front axle swivel bushes has caused this as axle starts to lie off centre and put strain on 4wd shaft which will wear couplers in no time

Not sure on that.

The shaft has UJ’s on our m620 Deutz so alignment should not be an issue as it moves vertically so a little sideways would not make a noticeable difference.

 

[njneer]

The cause is that there was no grease where the male and female splines slide on each other and so they started to wear. The box shaft isn't too bad but there is definitely wear. Unfortunately/fortunately i don't have two old collars and they're an odd ball 25 spline.

Think perhaps some are confusing this with the Same built axle which , if not greased, used to wear the rear axle pivot bush and wear out the splined connectors between the solid 4wd shaft and the front pinion and rear output shaft.
The couplers used to wear the splines and you could cut two worn couplers and weld the two good splined ends together.
The issue faced by the OP is the Carrara axle with fromt axle suspension.
The 4 wd shaft has no telescopic splined part and the travel on the shaft , when the suspension moves,
Is done by sliding on the output shaft from the gearbox which,if not greased ,wears the splines and can , in extreme cases pull or push on the output shaft.

 

[Oh Deere]

We had the output shaft take the splines off completely.
Had a hell of a job getting parts. Apparently the shaft had been upgraded which includes replacing gearbox casting to make it fit. Ended up having it built up and new splines cut. Apparently the type of welding rod they used was designed for this purpose in the mining industry.
Very interesting subject and Teame valley engineering did a fantastic job. They used to do a lot of pinion shafts on same tractors in the past

 

[Niall310]

Think perhaps some are confusing this with the Same built axle which , if not greased, used to wear the rear axle pivot bush and wear out the splined connectors between the solid 4wd shaft and the front pinion and rear output shaft.
The couplers used to wear the splines and you could cut two worn couplers and weld the two good splined ends together.
The issue faced by the OP is the Carrara axle with fromt axle suspension.
The 4 wd shaft has no telescopic splined part and the travel on the shaft , when the suspension moves,
Is done by sliding on the output shaft from the gearbox which,if not greased ,wears the splines and can , in extreme cases pull or push on the output shaft.

You have it exactly right!
Our mechanic reckons ours hasn't done much internal damage because the 4wd is still turning on and off as it should which of not, is usually a sign that the back of the shaft is damaged.
The output shaft in coming from John Conaty, County Meath in The south of Ireland. It's a non-genuine replacement that he sources and supplies.