Join Date: Oct 2012
Location: Grande Prairie area, Alberta, Canada
Mentioned: 0 Post(s)
Quoted: 371 Post(s)
When I had bought a JD 9430 used, the local dealer suggested I replace the water pump to be proactive. Its the 13.5 liter engine so I don't know if the very same pump fits the 12.5 but I believe the failing theme is similar in that it can allow the balls to fall out of the bearing into the engine. The updated reman pump I bought has a different drive gear on it with a machined surface on the backside that makes a close fit to the face of the bearing or that is what I was interpreting when comparing them both side by side. Will that solve all problems, I don't know but it is the update they came out with. They suggest replacing the pump on a regular basis, some suggested 3000 hours and some said do it even sooner. Its not a cheap unit but if it saves that mess in the photos, I guess its worth it in the end.
I don't know if the bearing is different or not, I was not able to find out from anyone at the local dealer as to what was all different about the new/reman pump. And again this was for my 13.5 liter engine so one would have to dig into it to find out if there is an update on the 12.5 pump as well.
Last edited by Northern Farmer; 06-11-2019 at 08:20 PM.