01 JD 4400 questions, 3PH, SVC kit, battery

[tachnem]

Have a 4400 here with 430 loader, syncreverser trans, rear remotes (5 ports back there: one plugged that says 'To Reservoir, two looped together and two plugged), and what seems to be a factory SVC on the right fender that is cable-operated and springs back to center.

The lever for the 3ph probably has 8" of movement front to back, but only raises the arms in the last inch of movement at the back. Any ideas on what adjustments need to be made there? Or any way the SVC kit could be related? Seems that should raise the arms through the entire range of lever movement.

Any one have a good link for getting familiar with the capabilities of the SVC kit and how to use it?

Last question, there's a piece of plywood for a battery tray. Looks like the battery corroded the tray completely at some point. Any opinions on whether it's worth building a new one out of steel, ordering a replacement tray from JD or run it with the plywood?

Thanks!

 

[tachnem]

Also, loader hydraulics seem strong and the 3ph picks up a finish mower.

 

[beenthere]

Will try to help you out. The SVC is likely the 3rd SCV.. and the fender control is how it is operated.. and controls one set of the couplings not looped together in the rear. The other three likely/may be power-beyond for a backhoe or wood splitter..

Linkage adjustment may be in order for the 3 ph to function correctly with the lever (quadrant) control. What you report doesn't sound right, but be sure that the valve is open all the way under the seat.

A good time to pick up a copy of the service technical manual.

 

[tachnem]

Between your explanation and the parts diagram the 3rd SVC makes more sense now, thanks. Was surprised to see the original valve has the additional ports already. The fender lever is hokey, but hopefully some lubrication will clean it up.


In regards to the 3PH, I took the cover off the rockshaft valve and noticed a few things.

-Oil. Is that normal or a sign the o-ring behind the valve need to be replaced?
-Difference from the 4400 parts diagram. The pic here rockshaft linkage shows linkage 38 which mine does not have. Part 17 connects straight to 41 so there's no adjustment there.
-In this picture below the arm does not make contact with the valve shaft until the 3PH lift lever is about halfway back. Red line shows contact. I don't see any adjustment there. Does that seem right? Seems like it ought to make contact sooner.

-There is a linkage rod that feeds back from the left lift arm to the inside of shaft 33 in the diagram. I can't find it anywhere in the parts catalog but it's circled in red in this pic. Raising the lift arm through it's entire range (and in turn moving that feedback linkage) does not change the position of the arm that contacts the valve at all. Should this not move the bottom end of the arm (green arrow above)? There's a second arm inside the shaft with the green arrow that sits on the same shaft as the feedback arm ( shaft 33 in the diagram above), could it be broken?


Thanks for reading!

 

[beenthere]

Have you checked the parts site to see what parts are included in the 4400. I go to jdparts.com (free registration) and get a pretty good schematics of parts and part numbers. Compare to what you see with the cover off.

Just FYI, it is SCV, not SVC.. not important but thought you would want to know. Stands for Selective Control Valve.

 

[tachnem]

In case anyone ends up here looking at a similar issue.....I was able to get this resolved yesterday. I misread the diagram initially and the one linked below (same as above) is correct. For my issue the roll pin that's part #40 was in three pieces and the shaft that's part #33 was frozen in the rockshaft cover. This prevented the arm, part #32, from making contact with the rockshaft valve until very late in the lever's range. I hit everything with some pb blaster, drove out the broken roll pins and replaced. Then I hooked everything back up and cycling the 3PH arms provided the leverage to loosen the shaft (#33).


http://www.tractorbynet.com/forums/files/john-deere-owning-operating/133757d1246328029-tight-rockshaft-4400-a-4400-gif

 

[MF283]

Good to hear you got it fixed, thanks for sharing the results to help out the next person.

Ronnie

 

[tem00]

I just got a 4400 with syncreverser. However, I'm having concerns about the forward / reverse lever. Can someone please tell me if theirs has more than two detents for both forward and reverse?

Mine is very finicky and there is a distinct detent between neutral and both forward and reverse positions. It seems I have to move the lever quite a bit to get in gear and the apparent useless blank detent position seems unneeded.

My first thought there is something wrong with the linkage. Is it normal to have anything between neutral and forward or reverse?

 

[tachnem]

I definitely have to move mine fully forward and fully back for fwd/rev. Just moving it a bit from neutral is not enough.

I've also noticed if I'm going forward and push the clutch in to slow down, the syncreverser lever goes back to neutral. Does yours do that? Is this by design? Or is there an adjustment I can make?

I just got a 4400 with syncreverser. However, I'm having concerns about the forward / reverse lever. Can someone please tell me if theirs has more than two detents for both forward and reverse?

Mine is very finicky and there is a distinct detent between neutral and both forward and reverse positions. It seems I have to move the lever quite a bit to get in gear and the apparent useless blank detent position seems unneeded.

My first thought there is something wrong with the linkage. Is it normal to have anything between neutral and forward or reverse?

 

[RoyJackson]

I just got a 4400 with syncreverser. However, I'm having concerns about the forward / reverse lever. Can someone please tell me if theirs has more than two detents for both forward and reverse?

Mine is very finicky and there is a distinct detent between neutral and both forward and reverse positions. It seems I have to move the lever quite a bit to get in gear and the apparent useless blank detent position seems unneeded.

My first thought there is something wrong with the linkage. Is it normal to have anything between neutral and forward or reverse?

If you remove the key panel (the panel with the ignition switch) and take a look at the reverser linkage, you'll see a couple of universal type joints. One, or both might have enough wear to bind a bit.
I suspect this may be causing your problem.
You could try some type of lubrication...don't think it would help much though.

I never noticed any wear, but I always pushed the reverser lever all the way forward or back to reverse the tractor's direction.