A WD question for the experts..

I have a good size 3pt.hitch 'wood bucket' that I use on both my D14's as well as my WD. If I load too much firewood while on the D14 and it's time to lift, the front end goes way up and the load stays on the ground. The WD hasn't got the same muscles so with too much weight on, the load may go up part way or not at all, it sounds like the relief valve opens. The strange part is that when it can't lift or lift any higher... if I put it in gear and let up the clutch and move forward, it will lift the load most of the time, how can this be?? (There is no issue with the clutch whatsoever). 

Stop overloading it!

Gary Burnett wrote: Check the oil level

Just to be clear... with the tractor in neutral it's fair to say it can lift about 75% of what it is really capable of. When it's short the last 25% all it takes is for the wheels to start moving in a gear and the 3 point goes to the top. Has nothing to do with oil level and the controls are well adjusted. It's been like this for many years. Simply a mystery. 

Somewhere there is a shirt that reads" if at first you don't suceed, maybe you should do what dr allis told you to do in the first place"

do you  really hear the hydraulic valve go over relief ?? .... or does the old pump never get to that point ? .................... be interesting to measure the PSI when it stops moving.

Edited by steve(ill) - 10 Sep 2023 at 8:05am

DrAllis wrote: So, you didn't try what I told you to try ??

When both tractors were new, the D-14 was rated at 3700 psi hydraulic pressure max for the hyd pump. The WD series was 3400 psi. After all these years, both of them are probably not where they were when they were new and whatever their max system pressure is now determines how much they can lift. This assumes each 3-point hitch are geometrically and mechanically equal to each other when it comes to lifting. A pressure gauge will verify what each tractor is doing. You might be surprised to find the old WD is only at 2,000 psi, while the D-14 is closer to 3,000 psi. Whichever one is higher will lift more, assuming hitches are equal. Also, I'd bet a WD is a little heavier on the nose than the shorter wheelbase D-14, but it would take a scales to confirm or deny that. A 3-point hitch on these tractors (I don't think) can ever be equal to each other lift capacity wise. The top link connection on a WD is much closer to the lift arms centerline than a D-14-15-17 and there's nothing you can do to change that, probably giving the D-series a larger max lift advantage over a WD-series. Whichever tractor lifts your implement higher, may be the weaker when it comes to max pounds of lift ability.

Edited by DrAllis - 12 Sep 2023 at 6:22am

MACK wrote: When I was 21, I could put 100 pounds over my head. Now that I'm 81, I can't get 100 pounds off the ground. Hydraulic systems work the same if not rebuilt at some point. Relief valve springs get week from heat and use, pumping plungers get worn, orings ware and get hard and many nothing idems ware.                     MACK