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My D110 is only 5 years old with 180 hours on it and it's leaking oil out of one axle. Deere service says the whole transaxle must be replaced and there is no way to service, or fill it. A little research and I found a seal replacement kit for $50. A little more research and I find many people with sealed hydrostatic trannys are having issues after 5 years or so. The mower still runs and cuts fine, but I don't want to destroy the tranny if it can be fixed. Any insight, suggestions, or recommendations will be extremely helpful. Thanks!
 

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JD lists seals for the axles (T40A transmission). Part #4 below.

Part Number:
MIU804267
Part Price:15.13 USD
On Hand:
0 Check Other Stores
Description:Seal - OIL SEAL, 19.05 X 32 X 8
Package Quantity:1


Part #18 is a repair kit for the entire transaxle. Probably not worth it for $690.

They also list a complete seal kit for $46.

 

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Working so far...

I ended up lifting the seat/body (remove seat springs and the four screws that hold down the dashboard) enough to get to the rubber cap/plug thing at the rear of the diff (turns out it's a prv). Removed the prv and filled the diff up with diff oil from AutoZone ($16 a gallon). She's running great, cut two lawns, no sign of any leaks (even the axle leak has stopped), and no more jerky reverse...I think the diff was low on oil when I first bought the unit 'cause she's never cruised smoother and quieter.
 

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I ended up lifting the seat/body (remove seat springs and the four screws that hold down the dashboard) enough to get to the rubber cap/plug thing at the rear of the diff (turns out it's a prv). Removed the prv and filled the diff up with diff oil from AutoZone ($16 a gallon). She's running great, cut two lawns, no sign of any leaks (even the axle leak has stopped), and no more jerky reverse...I think the diff was low on oil when I first bought the unit 'cause she's never cruised smoother and quieter.



You're probably still leaking some, but not enough to matter.
 
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