J.D. 4310 four wheel drive problems

[kevman]

Hi everyone,
I love my 4310, have kept it in my climate controlled shop since new 5 years ago. Two years ago the shaft that engages the front wheels stripped (i was plowing snow on a mountain driveway) and had front end rebuilt by best mechanic around.
Now 200 hrs later, with maybe 50 hrs using front wheel drive while mowing,no more snow plowing!, it is making a low grinding noise when I engage fwd.so I immediately dis-engage.
Is anyone else having these fwd problems ? I really baby this tractor, but maybe I'm missing something.
Thanks in advance for any input.

kevman

 

[beenthere]

:welcome:
Sorry to hear of your problems, and/or potential worry about it happening again.

Sure don't have any input, as I've not had any issues with the JD 4300 that I have. And I've not babied the 4wd system on it.

I assume the oil level has been maintained.

Not knowing just how you have used it, cannot make any suggestions as to why or what not to do.

Was this an issue dealt with by the Deere dealer, or not?

 

[arrabil]

had front end rebuilt by best mechanic around

This person have the Deere tech manual available to them or did they just do what they would normally do for an automotive axle?

 

[Kyle_in_Tex]

Sorry to hear this. I believe these have an electric valve that sends hydraulic oil to a cylinder to engage the front drive shaft. Which splines went out? You said the shaft's splines but then you said you had the front end rebuilt. You might make sure it is coupling and decoupling good. If some gunk/dirt/rust or trash is caught up in the area, it could be causing the problem. I tried to put up a picture but can't seem to get it to do it.

How many hours on the tractor?

MFWD Drive Shaft
MIF
Picture Note: Drive Shaft viewed from Left Side
Function:
The MFWD drive shaft provides a means to transfer power
from the pinion shaft to the front axle.
Theory (MFWD Engaged):
The MFWD is engaged by placing a shift collar (A) between
a gear (B) that is engaged to a gear on the pinion shaft (C)
of the transmission and splines machined into the MFWD
drive shaft (D).
The shift collar is moved by a shoe that is attached to a
cross-shaft through the transmission. The cross-shaft may
be rotated by a mechanical lever or a hydraulic cylinder (E).
The cross-shaft is rotated mechanically on SST machines.
The hydraulic cylinder rotates the cross-shaft on all
ePowrReverser machines, and eHydro machines with
MFWD.
ePowrReverser and eHydro machines have the MFWD
normally engaged. When ePowrReverser and eHydro
machines are started, the hydraulic cylinder has no
hydraulic pressure to it and is retracted. This places the
shift collar (A) in the engaged position and the MFWD is
engaged.
Theory (MFWD Disengaged):
The MFWD is disengaged by rotating the cross-shaft (F),
moving the shift collar (A) off gear (B). The gear rotates
freely on the MFWD drive shaft (D).
On SST machines the cross-shaft (F) is rotated with a
mechanical lever and linkage.
On ePowrReverser and eHydro machines the hydraulic
cylinder extends to rotate the cross-shaft. The cylinder is
extended when the MFWD switch is pressed. The switch
activates a hydraulic valve solenoid coil to provide
pressurized oil to the cylinder. See æ’¤TO and MFWD
Hydraulic Operation on page 741 in the Hydraulics
section, and 溺FWD Circuit Operation in the Electrical​

section.