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430 Hydrostatic Shock Replacement


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#1 AV430 OFFLINE  

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Posted March 26, 2011 - 05:42 PM

You wouldn't know it by the weather we are having today, but spring is here and that means the 430 will once again be called into service for grass cutting duty. Last year I noticed that the hydro seemed a little jerky going from forward to reverse, so this year I decided it was time to replace the hydro shock absorber. These 430's have quite a bit of power and if you let the hydro shock get too weak they have been known to break the frame tabs where the transmission is bolted to the frame. $61.00 from Mother Deere but I have read replacing it makes a big difference, and besides this one is 26 years old! I have already replaced several linkages for the hydro control lever so this should maike the transmission silky smooth. I can't believe how dirty this tractor looks with all the panels off! It is actually a clean strait tractor with just 720 original hours. Adam:rocker::rocker:

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#2 olcowhand ONLINE  

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Posted March 26, 2011 - 06:47 PM

Any pic of this hydro shock? Never heard of it.

#3 NUTNDUN OFFLINE  

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Posted March 26, 2011 - 06:55 PM

You better wash that thing. LOL. I would like to see pictures of the shock also, never seen one or heard of it either. Not that I don't believe you, just never seen one myself.

#4 AV430 OFFLINE  

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Posted March 26, 2011 - 09:35 PM

Well here is the shock, or the proper term, hydrostatic damper. Almost all the John Deere hydros incorporate a hydrostatic shock to dampen the transitions between speed changes, and forward and reverse. They work well, but after 26 years, or tons of hours, just like any gas shock, they can wear out. Adam

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#5 ducky OFFLINE  

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Posted March 27, 2011 - 10:02 AM

Well here is the shock, or the proper term, hydrostatic damper. Almost all the John Deere hydros incorporate a hydrostatic shock to dampen the transitions between speed changes, and forward and reverse. They work well, but after 26 years, or tons of hours, just like any gas shock, they can wear out. Adam


Adam, Does that one return to center or just act as a dampener.
I am looking for 2 that return to center like the ones on a Case 1835B skid steer only a bit smaller.

#6 Texas Deere and Horse OFFLINE  

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Posted March 27, 2011 - 10:43 AM

The first generation, 120-140, didn't have a shock. All of the newer hydro Deere had shocks on the levers.

#7 AV430 OFFLINE  

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Posted March 27, 2011 - 01:39 PM

Ducky, this shock only acts as a damper, it does not return to center.
Texas deere and horse, that is what I thought, I have a 1970 140 H1 that doesn't have the damper, I also have a 1972 140 H1 and it does not have a damper either. My 1981 317 has the same transmission as my 1972 140 and it has a damper. I think Deere went to a damper when they moved the hydrostatic control lever to the dash. Adam

#8 mjay OFFLINE  

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Posted March 29, 2011 - 04:49 PM

Does the 455 with foot controls have this damper?
Mine is a bit vicious going reverse to forwards.

#9 AV430 OFFLINE  

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Posted March 30, 2011 - 10:47 AM

Yes mjay, you have a damper as well. Here is the part number AM115862. I am not guaranteeing this will fix your issues but this damper does make a big difference. Adam

#10 mjay OFFLINE  

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Posted March 30, 2011 - 04:49 PM

Thanks.
Better add it to the to-do list.
I need to do some work on the drive anyway, the pedal for reverse needs adjusting as it doesnt stick up from the floor high enough to get full speed in reverse. If you pull up on the forwards ledal it will work fine though. Must be just an adjustment.
Its all very tight underneath it though.

#11 AV430 OFFLINE  

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Posted April 07, 2011 - 09:09 PM

Well I got my 430 all back together with the new hydro shock installed. Cut the grass tonight for the first time and man that shock made a big difference! Silky smooth and even, throughout the entire range. Forward and reverse is nice and easy. Best money I have spent lately. The replacement shock was slightly smaller in diameter than the old one but really worked great. Should have posted some pics of the tractor back together but ran out of daylight. Adam

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