4310 vs. 3320

BillyP · Apr 11, 2005

Planetary drive is a "big" tractor feature, it's stronger than the spur drive in the 4000TEN Series and with the introduction of the 3720 JD was concerned about durability. 

Just for information purposes, the JD 4510, 4610 and 4710 tractors have the planetary drive.

GeorgeC · Apr 11, 2005

The other feature I think was LONG overdue is the new 13.5 gallon fuel tank. For those of us who need to drive to a gas station, this will be very welcome.

KennedyDiesel · Apr 12, 2005

Just FYI, I had low fuel warning come on at about the red on the gauge. I filled it and added 8.5 gallons if memory serves. I wrote down the hours this time 16.2 as I did not note this at the dealer when I took delivery, nor did I verify how full the tank was, only that the gauge read full and the dealer said he filled it.

KennedyDiesel · Apr 12, 2005

I understand the final drive topbe planetary on the large frame and spur gear on the mid frame. The only spec change that I see is the small frame 400-10's list spur gear and the 3000-20's list helical which may or may not indicate a change in the cut of the gear. The earlier ones may well have been helical cut also...

beenthere · Apr 12, 2005

Do you have a link to the website where the final drive is planetary?

I read that the "Rear final drive is spur gear". That is in the manual for the 3520 specifications.

I'm real curious now.

beenthere · Apr 12, 2005

Addition of a second pump?

The 4000's always have had two pumps. Have they added a third? Or just a bigger pump to handle the ehydro?

I'm confused by the 'second pump' comment. Can you help me out?

beenthere · Apr 12, 2005

You indicate the 3x20 series has planetary final drive, and the specs in the 3x20 manual says "Rear final drive spur gear". Seems to be some confusion, and I'd like to discover which is which.
Thanks in advance, if you can help. /forums/images/graemlins/wink.gif

laurenzo · Apr 12, 2005

I'm sorry for the confusion. In my original post regarding the 3320, I erroneously stated that the final drive was "planetary," when in fact (according to the specs from the website) the final output is via helical gearing.

GeorgeC · Apr 13, 2005

( Addition of a second pump?

The 4000's always have had two pumps. Have they added a third? Or just a bigger pump to handle the ehydro?

I'm confused by the 'second pump' comment. Can you help me out? )

The power steering and implement pump no longer share the same pump. They added a second to split the tasks.
Truthfully, I never experienced a problem with my 4300. /forums/images/graemlins/confused.gif

Jim_Fisher · Apr 13, 2005

George,

( The power steering and implement pump no longer share the same pump. )

My 4300 has two pumps, one for the hydraulics and one for the power steering. The pumps are bolted together into one unit (on the left side of the engine in the front) and share the same drive mechanism. It looks like a single pump but it is actually two pumps driven in tandem.

I suspect that your 4300 is set up the same way.