JD 4520 Anomalies

[texastomtom]

update to 4720 status

well I have had it back for almost 2 weeks
they did seem to help the steering column squeal, although not completely alleviate it.....

I havn't had enough seat time to run the fuel low enough to test the fuel sender properly.

I'm going to wait and see if fuel guage is correct so I can have them work on that again IF NEEDED while they work on the squealing again..... Deere is going to have to do a little better on that.....

tom

 

[oxfordman]

I am about to purchase a new 4520 w/FEL and finish mower. Have these problems been resolved to your satisfaction? Is there any reason I should not go forward with the purchase?

Thanks.

 

[joecdeere]

see if this helps..
Complaint or Symptom:
The fuel gauges fails to operate or reads erratic.

Problem or Situation:
The LVA13530 fuel sending unit does not provide adequate sealing to prevent fuel from entering the resistor. The fuel within the resistor causes corrosion which, results in a failed or erratic sending unit.

Solution:
Order and install an LVA13623 fuel sending unit.

Additional Information:
The LVA13623 fuel sending unit was implemented into production on all units above the following serial numbers. (LV4120H210075) (LV4120P215004) (LV4320H230059) (LV4320P235025) (LV4320E238001) (LV4320F239002) (LV4520H250007) (LV4520P255039) (LV4520E258018) (LV4520F259014) (LV4720H270065)

and for the noise.....
Complaint or Symptom: Hydraulic whining noise coming from the steering valve area.




Problem or Situation: The noise is the natural harmonic frequency of the fluid flowing through the steering control unit.




Solution: Follow to the steps below to dampen the noise of the steering valve hydraulic fluid flowing.

1.Remove side covers by loosening the screws.

2.Pry open steering wheel cover.

3.Install adhesive foam parts to the inside of side covers and the steering wheel cover per the graphics below.

4.Reinstall side covers and steering wheel cover.


lv/Steering Cover Foam Installation.jpg


Parts:

LVU16951 - 1 pc

LVU16952 - 1 pc

LVU16953 - 1 pc

 

[Cheyenne]

My 4520 was repaired under warranty, and the 2 anomalies were corrected exactly as you have described. No more problemo.

 

[BigGary]

My 4320 has the same noise and the fuel gage on these 20 series is junk as we all must be starting to understand.
The noise from the steering column can be eliminated almost completly by squeezing the plastic covers with my hands. So I had intended to unscrew the halfs and place some dense foam inside to keep pressure on the halfs when they are again screwed together. I guess this is the same repair without the adhesive backing.
The fuel gage will stay as is unless I need to go back to the dealer for other more serious issues.
all in all these are no big thing and with the exception of a loose hose clamp causing a coolant drip and a loose hydraulic hose these have been my only issues after 90 hrs.