I have a JD 455G track loader and had transmission problems. Removed the transmission unit and took it to a shop to be rebuilt. The JD AG dealer took it apart and did a material take-off that included some expensive gears so I went to the shop to view them today.
The 3 parts that make up about $4k were large gears with very minor damage. The most expensive gear is the T104719 ($2k) part where 2 teeth have a 1/4" deep by 1/2" along gear corner cracked off. There is still 1/2 the surface fully intact on those 2 teeth and the 2 teeth are not next to each other but have a full tooth between them. The rest of the unit is like new. The other 2 gear parts are T152837 ($1.2k) and T145041 ($.8k) with hardly noticeable corners on a couple teeth worn off....very minor and hard to find. The tooth damage was not the cause of failure rather the clutch's were deteriorated and crumbled.
This is a farm use tractor with hardly any use and expect maybe 100-200 hours a year use anticipated. It has a new undercarriage and 4690 hours. Everything works.
Would you change those gears? I will be having the tranny rebuilt with all new clutch plates and a few bearings but the unit looks real good other than the minor teeth damage. The AG dealer says with those gears the warranty might be limited to 6 months...but keep in mind the rare use.
Any opinions if it were your tractor and what you would do?
Thanks,
Tom
The 3 parts that make up about $4k were large gears with very minor damage. The most expensive gear is the T104719 ($2k) part where 2 teeth have a 1/4" deep by 1/2" along gear corner cracked off. There is still 1/2 the surface fully intact on those 2 teeth and the 2 teeth are not next to each other but have a full tooth between them. The rest of the unit is like new. The other 2 gear parts are T152837 ($1.2k) and T145041 ($.8k) with hardly noticeable corners on a couple teeth worn off....very minor and hard to find. The tooth damage was not the cause of failure rather the clutch's were deteriorated and crumbled.
This is a farm use tractor with hardly any use and expect maybe 100-200 hours a year use anticipated. It has a new undercarriage and 4690 hours. Everything works.
Would you change those gears? I will be having the tranny rebuilt with all new clutch plates and a few bearings but the unit looks real good other than the minor teeth damage. The AG dealer says with those gears the warranty might be limited to 6 months...but keep in mind the rare use.
Any opinions if it were your tractor and what you would do?
Thanks,
Tom