Hydrostatic Question

/ Hydrostatic Question #1  

Pete7

New member
Joined
Jun 12, 2025
Messages
9
Tractor
Ford1620
The hydrostatic unit in my Ford 1620 is made by KYB and is model HVFD 23c-23m. The model number was on the tag when I split the tractor to fix a leak.
Anyone know the KYB model number that’s in the TC series ( not the Ford part number)?
 
/ Hydrostatic Question #2  
This is the tag on the hydro unit in my TC-30.
RvbQRvt.jpeg
 
/ Hydrostatic Question
  • Thread Starter
#3  
This is the tag on the hydro unit in my TC-30.
RvbQRvt.jpeg
Big thanks for taking the time to help me. I’m surprised the TC uses the same KYB hydrostatic unit. Though maybe they used a different KYB model on the TC tractors and that would give me more replacement options for my 1620.
Thanks again.
 
/ Hydrostatic Question #4  
I am watching this hoping more get added. My 1995 build 1520 is also a KYB model HVFD-23c23-m.

1520 kyb hst.jpg


I haven't had the opportunity to see what is in my 2010 T1520, yet. What I do know is that it feels considerably different than my 1520. I mow some fairly steep hills with the 1520 while sometimes pulling a pto operated grass/leaf collector and trailer. The 1520 will continue moving, in medium range, just as long as the motor doesn't bog down. The T1520 will start to stall out requiring shifting to low range much sooner with less load and 10 more hp. That extra 10 hp also just about exactly doubles fuel consumption.
 
Last edited:
/ Hydrostatic Question
  • Thread Starter
#5  
Big thanks for taking the time to help me. I’m surprised the TC uses the same KYB hydrostatic unit. Though maybe they used a different KYB model on the TC tractors and that would give me more replacement options for my 1620.
Thanks again.
I saw a photo on ebay of a KYB HVFD23F-R35-P and it looked very similar to a 23c-23m. No idea if it was ever used by Ford/Nee Holland. Does that unit sound familiar to anyone?
 

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