Recent content by Jimbo1640

Mentioned this gauge at the beginning of this thread so thought I would post a pic. Did this a few years ago when we first encountered problems: a pressure gauge on the hydraulic pump. Tractor needs a spring cleanup but you get the idea. This was not expensive and really paid off later when...

Here is another that you may or may not find helpful: the Flow Control Valve, or Pressure Control Valve, located under the right footrest, which you have to remove for easy access and also drain your hydraulic oil. This was an sob to get that nib off, and I had to eventually remove the whole...

You should check out this guy. This video is about the Filter Bypass Valve on a 1640, but the principle remains the same for all these valves that are accessible from outside the tractor without taking the top off. In other words, do the cheap stuff first. It was worth watching just to get that...

If memory severs me, this is what our Hydraulic Relief Valve looked like after we pulled it. Notice the O ring on the left was shot and in pieces. Cheap fix with an assorted O ring kit, although I've found it is better in the long run to order the real thing from John Deere--they last longer and...

I want to thank everyone for their input on this. Tx Jim--you were right, the top had to come off. After over a month of dealing with other matters here on the farm, was finally able to get back to it. Ordered a Rockshaft Seal Kit, new piston rings, new gasket for the top, and new washers for...

Hi Guys-- My tractor buddy has a cracked head on his Kubota M4950 DT 6 cylinder. Having a bit of trouble locating one. Any ideas? We are in Canada, but willing to explore possibilities. Cheers.

Hi Everyone- Been having the weirdest problems with the hydraulics on my 1640 and have finally determined that we only have hydraulic oil pressure when the rockshaft lever is in the raised position. Have now determined (due to an oil pressure gauge installed off a port on the hydraulic pump)...

Question on the proper placement of the Cam Follower into the Roller (load selector) Link: Does anyone have a pic or diagram of how it actually mates? We have the Rockshaft Housing top off, and the manual says simply to reinstall in the reverse order of how it was removed. Unfortunately, we...