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1971 120


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#31 Texas Deere and Horse OFFLINE  

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Posted September 05, 2011 - 12:00 PM

I posted this in another thread, but I thought I would post it here for you also.

In 1970- 71(only 2 years in prodution), JohnDeere offered the model 120 with a 12 horse motor, 2 hp less than the 140. The transmission used a new style to Deere’s hydrostatic line. The new style used a pinion and ring gear design. This version of the transmission was not introduced to the model 140 until the model year of 1971. Like the 140, a single lever on the right side of the steering wheel controlled direction, speed and braking. The 120 also had a single pedal on the left side that functioned as the clutch and the brake. Independent brakes were not offered on the 120.
The model 120 offered hydraulic lift to the owner. A single lever on the left hand side of the steering wheel provided lift to the rockshaft and to an optional set of spools in the front of the tractor. Three lever hydraulics, like those available on the model 140, were not an option for the 120.
Unlike the model 140, the rear of the fender deck on the model 120 did not offer the cutouts for the upper link on the 3 point hitch or the rear hydraulic openings.


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#32 Trav1s ONLINE  

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Posted September 05, 2011 - 09:32 PM

Did a bit of work on it tonight and it turns out the wiring harness is a bit hacked up. If I could find a wiring harness diagram for tractors over 7,500 I will try to fix it. If not I will just order one from JD. Oh well...

#33 Trav1s ONLINE  

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Posted September 08, 2011 - 09:44 PM

FRom what I have found the 120's share the same wiring harness with the 140 tractors serial #30000-38000 so I can use the wiring harness schematic to get to the root of my problems. I am pretty much planning on rebuilding my harness myself or buying a new one from Hapco.

#34 Trav1s ONLINE  

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Posted September 10, 2011 - 05:39 PM

Got some help chasing down the gremlin this afternoon and it is alive again!!! Maybe I should name it Lazarus :bigrofl:

#35 Texas Deere and Horse OFFLINE  

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Posted September 10, 2011 - 05:48 PM

I'm glad you got it figured out. I meant to ask you earlier in the thread, did this have a cab on it at one time? I noticed the holes in the fender pan and it might have had cab on it.

#36 Trav1s ONLINE  

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Posted September 10, 2011 - 05:52 PM

It must have had a cab on it at some point. The good thing is that it shares the fender pan with a 110/112 so it should be easy to find a straight replacement (like the one down by Lincoln, NE for $15 on CL right now!!!!).

Speaking of plowing or a snow blower... I have noticed that it will really tromp down the grass when mowing and it is a real devil to push while it was DOA. I wonder if the rear tires are filled with fluid????

#37 Texas Deere and Horse OFFLINE  

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Posted September 10, 2011 - 05:58 PM

You did release the hydro valve to move it DOA? I would think from looking at the 120's I have, that it uses the same pan as the late 140's.

#38 Trav1s ONLINE  

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Posted September 10, 2011 - 06:03 PM

I did release the valve (after reading horror stories about people who did NOT do that.

Not sure on the late 140 fender pan. From what I can tell it should be the same as the 110/112. Time to check on JDParts.com ;-)

#39 Texas Deere and Horse OFFLINE  

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Posted September 10, 2011 - 06:05 PM

The only reason I asked is that the 110/112 has the hole for the shifter to come through, and the late 140 doesn't.

#40 Trav1s ONLINE  

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Posted September 10, 2011 - 06:07 PM

I did release the valve (after reading horror stories about people who did NOT do that.

Not sure on the late 140 fender pan. From what I can tell it should be the same as the 110/112. Time to check on JDParts.com ;-)


I forgot about the shifter... FAIL!

FWIW
110 = AM36522
120/late 140 = AM37476

Looks like I get to repair the one on the tractor :wallbanging:

#41 Trav1s ONLINE  

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Posted September 14, 2011 - 03:51 PM

Walked out to the garage today to the smell of gas and a puddle of it on the floor under it. The float is sticking so I ordered a rebuild kit for it from Napa and picked up carb cleaner and engine degreaser.

#42 johndeereelfman OFFLINE  

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Posted September 14, 2011 - 04:21 PM

Just trying to help. The fender pan on a 110/112 will not be the same as the one found on your 120. At first glance, you should notice the seat mounts are mounted more flat on the 110/112's, as the seat mounts for the 120, and 140's for that matter, are more of a slopped mount. The 120 pan doesn't have the pto/3pt. cutout like the 140 pans. Just wanting to give you a heads up before you start looking to buy another fender pan.
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#43 Littledeere OFFLINE  

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Posted September 14, 2011 - 05:23 PM

The Elfman is dead on that pan is 120 only

#44 MAV OFFLINE  

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Posted September 14, 2011 - 09:18 PM

Just trying to help. The fender pan on a 110/112 will not be the same as the one found on your 120. At first glance, you should notice the seat mounts are mounted more flat on the 110/112's, as the seat mounts for the 120, and 140's for that matter, are more of a slopped mount. The 120 pan doesn't have the pto/3pt. cutout like the 140 pans. Just wanting to give you a heads up before you start looking to buy another fender pan.


Also the foot rest set a lot lower on the 110/112 than on the 120's and 140's

#45 Trav1s ONLINE  

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Posted September 14, 2011 - 09:46 PM

I guess I will fix the one that I have.




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