Posted 7/4/2015 17:33 (#4661456) Subject: John Deere 4430 hydraulic pump
My uncle has a 4430 with a weak hydraulic pump , today it got to the point where it couldn't operate his round baler anymore. He knew about the problem previously and already got a quote from the dealer to replace it. Quoted $4000 for a new pump plus labour ect from local dealer. I was thinking I could tackle that job for him and do cheaper. A new hydraulic pump from Abilene machine for $1200, I know front axle or radiator has to come out to get at it, maybe new coupler. Is there anything else I should know about to do this job? Or is the dealers quote reasonable and I should let them do it. My day job is a truck mechanic I'm sure I could tackle this though.
Posted 7/4/2015 19:02 (#4661556 - in reply to #4661456) Subject: RE: John Deere 4430 hydraulic pump
Why not rebuild the pump he has? Not that bad of a job just takes a lot of digging to get at it. If you come out the top, slide the radiator out to the side and get someone to help you lift the pump out of the cradle, it saves on the back.
Posted 7/4/2015 19:14 (#4661571 - in reply to #4661556) Subject: RE: John Deere 4430 hydraulic pump
Renville County, MN
Has someone done tests on the pump? I would make sure that there is not something else wrong before replacing the pump. I have seen a number of times when a pump has been replaced and there was another problem in the tractor and it was not the pump.
Posted 7/4/2015 19:13 (#4661568 - in reply to #4661456) Subject: RE: John Deere 4430 hydraulic pump
Cartwright, McKenzie County, North Dakota, USA
The job is not that bad, remove the radiator, the core needs cleaning anyway, remove the plate under it you can remove the coupler and the lines. It makes it easier to clean it before you remove lines and other items. I&T manuals are your friend, Actually are easier to understand than the jd manual, i have both. I overhauled the original pump once, and got a used pump the second time. Also put in the high capacity charge pump in the rear end, that made a big difference for an aging tractor.