JD 4600 HST sluggish when changing directions

RWFalkenstein · Apr 28, 2013

I just purchased a 4600 HST and mine acts the same way you describe here. Let me know what you find out.

ChuckB72 · Apr 29, 2013

My problem wound up being the Hydrostat pump. I took it to the local JD dealer and they tore it down and sure enough you could see how worn the pump was. I haven't received th total bill yet but the pump rebuild was to be around $2000 t0 $2500. The good news is the tractor is back to running.

cobracnvt · May 1, 2013

How many hours did the tractor have on it for the pump to be worn out?

samhudson3 · May 1, 2013

cobracnvt said:
How many hours did the tractor have on it for the pump to be worn out?

Good question. I have a 1999 4300 HST...

ChuckB72 · May 1, 2013

We bought this tractor used. It presently shows 1073 hrs. on the hour meter.

jcalla · May 3, 2013

Lube everything up real good.

RWFalkenstein · Jul 8, 2013

My JD 4600 tractor had only 1,080 hours and apparently this sluggish symptom was very unusual. The pump tested fine. My John Deere dealer ended up replacing the hydro control and piston. The tractor had to be split and required special tools to do the work. The bill for parts and service was over $4,000. It works fine now.