Jump to content

5488 trans update factory


Thesd5488
 Share

Recommended Posts

It's been at least 20-25 years ago we had a customers 5488 in the shop. Everything was worn out. It was an early s/n but when the melanic came up front to order parts, the gears were the updated ones. Impossible to find used. The whole trans had been update. I assumed from IHC. The customer was quite the caretaker of his equipment. . Everything was worn out because when Sam's club opened up in Sioux Falls at that time he had bought a drum of Hydraulic oil to change oil in it. Not transdraulic oil. Hydraulic oil. Turned out to be VERY expensive oil. A few years later on a very cold winters day he wanted to haul manure. To warm things up he draped a tarp over the tractor and put a knipco under it. A little to close to the lower fuel tank. Burned the whole thing up. 

A merciful end to that tractor.

  • Sad 1
Link to comment
Share on other sites

7 hours ago, cedar farm said:

It's been at least 20-25 years ago we had a customers 5488 in the shop. Everything was worn out. It was an early s/n but when the melanic came up front to order parts, the gears were the updated ones. Impossible to find used. The whole trans had been update. I assumed from IHC. The customer was quite the caretaker of his equipment. . Everything was worn out because when Sam's club opened up in Sioux Falls at that time he had bought a drum of Hydraulic oil to change oil in it. Not transdraulic oil. Hydraulic oil. Turned out to be VERY expensive oil. A few years later on a very cold winters day he wanted to haul manure. To warm things up he draped a tarp over the tractor and put a knipco under it. A little to close to the lower fuel tank. Burned the whole thing up. 

A merciful end to that tractor.

I was surprised first I’d seen been doing these almost 20 years

Link to comment
Share on other sites

Just so everyone understands, there were several changes to the speed transmission on the 50 series. The one that caused the most problems was the fine-tooth clutch packs. In a planetary tranny there is no side pressure, and the clutch packs always stay centered in the drum so the clutch plate teeth last very well. Unfortunately, IH used this same shape teeth on the clutch plates in a counter shafted tranny. The clearance between the shaft and the clutch drum is always pushed to the outside causing the hub to move in the clutch plates the amount of the clearance every revolution of the shaft, and this wears out the teeth. The fix was to make the teeth coarser and change the shape to one similar to an internal gear (think 400 series oil pump gears) so when the hub moves in the clutch plates it does not wear them out.

 Another change was to the high drive gears. For some reason IH used a fine-tooth gear (gear teeth) on the high drive/driven gears when all the others were heavier coarse toothed gears. These gears could fail under heavy load when the splines on the countershaft would get loose letting the countershaft gear run a little crooked.

The fix to the countershaft was to go to keyed and pressed on countershaft gears.

Problem is IH planned to change all this stuff at the same time, and the full update is to change the drive gears, clutches, driven gears, all countershaft gears and shaft. This was very expensive, so they came out with modified drive gears for the coarse updated clutch packs that still used the fine gear teeth, so you didn't need to change all that stuff. This is what the aftermarket sells.

None of the 50 series ever came from the factory with these updated parts, the changeover serial # is after the last production tractor came off the line. Any tractor with them was dealer installed.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...