D Series Hydro Adjustment

[Wheelhorse860 1]

How do i adjust the rear hydro on my d180? not sure wether its the screw to the bottom right of the hydro lever, or what. HELP

[wheeledhorseman 574]

Adjustments are covered in the manual you'll find here http://www.wheelhorseforum.com/files/download/24-sundstrand-hydro-transmission-repair-manual-492-4206pdf/

 

The adjustments are in the part 1 file.

 

Hope this helps you.

 

Andy

[Wheelhorse860 1]

Thanks andy.

[Wheelhorse860 1]

HI,now it goes into park, goes into forewards, but even when the lever is all the way back, doesnt even inch in reverse.....everything that can go wrong will! HELP

[JamesBe1 82]

I'm not sure of difference in adjustment procedures between the sundstrand pump document that Andy posted the link to, and the D-180 service manual, but the D-180 service manual does have it's own adjustment procedure.  Pretty much raising the rear wheels off of the ground and adjusting the eccentric until the wheels do not turn. 

 

The document is probably in the download section here, or on the wheel horse tractor manuals group in yahoo.  If all else fails, I can email you a copy.  It's a 14Mb document.

 

Good luck and keep us posted.  We're all learning here too.

 

James

[Wheelhorse860 1]

thanks james, i guess i have to read the manuel, but how do iddentify what year my 180 is?   

[wheeledhorseman 574]

You should have an id tag on the panel below the dash with a model number on it e.g. 1-0611.

If you go to the model list page on the forum here scroll down till you find your model and it will give you the year. So the example 1-0611 is a 1974 D-180.

 

The 1973 model (refered to in the manual separately) was badged as an '18 Automatic' whereas the 1974 onwards models were badged 'D-180'. As you refer to yours as a D-180 then my guess is that you'll find need to follow the second procedure in the manual. The whole linkage system fitted to the side of the hydro was different on the early model although the pump looks pretty much the same.

 

You haven't told us what exactly what the problem is that you're trying to solve by adjustment. I say that as, for example, they don't go at anything like full speed in reverse by design.

 

Thanks for chipping in James - long time no hear. The manual in the link I gave is the full WH - Sundstrand posted by Bob and covers the 18 and the D-180. Could be wrong but I think the same sections apear in several of the WH manuals.

 

Andy

[Trouty56 567]

My suggestion is to jack up the rear and put jack stands under each axle housing, then remove the right side panels to expose most of the linkage.  Once that is done start the tractor and move the DCL forward and backwards while watching the area at the pump (there is a small arm that moves a plate inside the pump for forward and reverse) to understand what is happening.  When the foot pedal is pressed the pump should be neutralized and the wheels should not spin.  Try that to see if it does.  There is a little set screw on top of the small arm I referred to above to loosen so the oblong screw on the front of the arm can be adjusted to find the neutral sweet spot.  Keep trying to move the DCL forward and reverse and pressing the foot pedal.

[Wheelhorse860 1]

thanks guys

[tommyg 152]

I wonder if its an adjustment at all. Could it be possible that you've got a broken roll pin and the shaft on the hydro pump isn't moving into the reverse position? Just wondering. I just noticed the other day that mine is loose and there is some travel before the shaft is engaged. I suppose it's possible that if can loosen, it can break.