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Tb68

finaldrive

Senior Member
Joined
Jan 23, 2009
Messages
447
Location
Southern California
Occupation
Business Owner
Thanks lantraxco

You are correct, this is tough.

TB68 came with 2 options.
Part number 19031-00200
This unit has an internal brake, it is a Kayaba MAG-85NP-700-1
Part number 19031-00100
This unit has no brake. It is a Kayaba MAG-85N-700-1

Both have been obsolete from Kayaba in Japan for almost 20 years.
There are no replacement options for this unit.

If you can find any of the following you can replace both sides and it will work.
Sumitomo SH75U-1 part number KAA0905
Sumitomo SH75U-2 part number KAA0952
Yanmar B7 part number 172162-73300
*these are all 2 speed unit whereas yours is a single speed. If you are able to find any of these, I can help you with how to install the hoses and what to do with the extra port.*
Also, you must replace both sides. If you only replace one with one of the above mentioned, your machine will travel crooked.

Good luck!


I have the parts drawing for each that I can email to you.
I am unable to supply parts or a complete unit.
You might find some NOS parts through Takeuchi.
 

Lau

Member
Joined
Apr 20, 2019
Messages
9
Location
China
Thanks lantraxco

You are correct, this is tough.

TB68 came with 2 options.
Part number 19031-00200
This unit has an internal brake, it is a Kayaba MAG-85NP-700-1
Part number 19031-00100
This unit has no brake. It is a Kayaba MAG-85N-700-1

Both have been obsolete from Kayaba in Japan for almost 20 years.
There are no replacement options for this unit.

If you can find any of the following you can replace both sides and it will work.
Sumitomo SH75U-1 part number KAA0905
Sumitomo SH75U-2 part number KAA0952
Yanmar B7 part number 172162-73300
*these are all 2 speed unit whereas yours is a single speed. If you are able to find any of these, I can help you with how to install the hoses and what to do with the extra port.*
Also, you must replace both sides. If you only replace one with one of the above mentioned, your machine will travel crooked.

Good luck!


I have the parts drawing for each that I can email to you.
I am unable to supply parts or a complete unit.
You might find some NOS parts through Takeuchi.
Hi .friend
MAG-85 is bigger than SH75U Final drive
MAG-85 is 15/16 holes .SH75U-1/2 is 12/12 holes
 
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