2120 PTO stops and starts

[DickG]

Own a NH 2120 with HSS that I bought new in 1997. Great machine but lately the PTO pops in and out when running an implement. If I push clutch in and out it will come back. Any ideas on what the fix is? Thanks.

 

[Soundguy]

do you have to shift the pto back in, like it became disengaged? or merely pushing the clutch in and releasing pedal fixes it?

soundguy

 

[DickG]

Just depressing the clutch brings it back. Sometimes it take a couple of tries, then the PTO works fine.

 

[Harry in Ky]

If the engagement lever does not jump back to neutral, it's probably not a gear related problem. There is a one way sprag clutch in the PTO drive train that could have an issue. Looks like it's in the rear housing, under the 3 Pt lift housing. Don't know what you use the tractor for, but this sprag would only come into play when decelerating with a high momentum load on the PTO. A built-in over running clutch.

 

[DickG]

When this problem started, I had my log winch on the tractor. When I engaged the PTO (at idle), it turns for a short while then just stops with no load. The PTO lever does not go back to neutral. Sometimes the PTO comes back on its own and sometimes I need to depress the clutch and it comes back. When the PTO is turning, it works fine.

 

[Soundguy]

when it comes on.. does it pull full power.. or slip?

 

[DickG]

Full power with no slipping when it works.

 

[RickB]

Full power with no slipping when it works.

Your sprag is shot.

 

[Soundguy]

i can remember reading about some kubota subcuts that had an ORC delete kit you could put on them to combat multiple failures... I havn't heard much about fnh units failing though.. do you see alot of this?

 

[whodat526]

i can remember reading about some kubota subcuts that had an ORC delete kit you could put on them to combat multiple failures... I havn't heard much about fnh units failing though.. do you see alot of this?

i changed three of them last year on 1715 fords

 

[DickG]

Thanks, can someone describe the function and location of the "sprag" and what's involved to fix this?

 

[Soundguy]

function? as discussed.. 1 way drive.. ( think ORC )

http://en.wikipedia.org/wiki/Sprag_clutch


1 1 SBA040109041 BALL BEARING Bearing, Ball, W/12x4, Start Year: 01/01/1987
2 1 SBA322610920 COUPLING Coupling, W/12x4, Start Year: 01/01/1987
3 1 80300633 SNAP RING RING, SNAP, Int, M80, Start Year: 01/01/1987
4 2 210048 BALL BEARING Bearing, Ball, Start Year: 01/01/1987
5 1 SBA322570920 COUNTERSHAFT Countershaft, PTO, W/12x4, W/540 PTO, 2120, NH-NA Only, Start Year: 01/01/1987
5 1 SBA322570910 COUNTERSHAFT Countershaft, PTO, W/HSS, W/540 PTO, 2120, NH-NA Only, Years: 01/01/1987-07/31/1993
5 1 SBA322570911 COUNTERSHAFT Countershaft, PTO, W/HSS, W/540 PTO, NH-NA Only, Start Year: 08/01/1993
6 1 SBA322570890 COUNTERSHAFT Countershaft, PTO, W/HSS, W/540 PTO, L/Creep, Years: 01/01/1987-07/31/1993
6 1 SBA322570891 COUNTERSHAFT Countershaft, PTO, W/HSS, W/540 PTO, Start Year: 08/01/1993
7 1 SBA322200180 COVER Cover, Start Year: 01/01/1987
8 1 SBA322280060 SUPPORT Bearing, Retainer, Start Year: 01/01/1987
9 2 SBA011510820 CAPTIVE WASHER SCREW SCREW, CAPTIVE WASHER, Hex, M8 x 20, G5, Start Year: 01/01/1993
10 1 SBA322611100 COUPLING Coupling, W/HSS, 2120, Years: 01/01/1987-07/31/1993
10 1 SBA322611101 COUPLING Coupling, W/HSS, Start Year: 08/01/1993
11 1 SBA398560891 BEARING ASSY Clutch Assy., One Way, W/HSS, Start Year: 01/01/1987
12 1 SBA040109052 BALL BEARING Bearing, Ball, W/HSS, Start Year: 01/01/1987
13 1 11068376 SNAP RING Ring, Snap, Ext, M35, W/HSS, Start Year: 01/01/1987
14 1 370006 SNAP RING RING, SNAP, Ext, M40, W/HSS, W/O Creep, Start Year: 01/01/1987
15 1 80037203 BEARING ASSY Bearing, Ball, W/HSS, W/O Creep, Start Year: 01/01/1987
16 1 114085 BALL BEARING Bearing, Ball, W/HSS, W/O Creep, Start Year: 01/01/1987
17 2 SBA011510820 CAPTIVE WASHER SCREW SCREW, CAPTIVE WASHER, Hex, M8 x 20, G5, W/HSS, Start Year: 01/01/1987
18 1 SBA399566720 PLATE Plate, W/HSS, Start Year: 01/01/1987
19 2 86511315 WASHER WASHER, M8 x 16 x 1.6, W/HSS, Start Year: 01/01/1987
20 1 SBA322570900 COUNTERSHAFT Countershaft, PTO, W/12x4, 2120, NH-E Only, Start Year: 01/01/1987
20 1 SBA322570980 COUNTERSHAFT Countershaft, PTO, W/HSS, 2120, NH-E Only, Years: 01/01/1987-07/31/1993
20 1 SBA322570981 COUNTERSHAFT Countershaft, PTO, W/HSS, 2120, NH-E Only, Start Year: 08/01/1993
21 1 SBA322610920 COUPLING Coupling, W/HSS, W/Creep, 2120, Start Year: 01/01/1987
22 1 SBA322570880 COUNTERSHAFT Countershaft, PTO, W/HSS, W/Creep, 2120, Years: 01/01/1987-07/31/1993
22 1 SBA322570881 COUNTERSHAFT Countershaft, PTO, W/HSS, W/Creep, Start Year: 08/01/1993
23 1 SBA042200422 BEARING ASSY Bearing, Needle, W/HSS, W/Creep, Start Year: 01/01/1987
24 1 SBA040109041 BALL BEARING Bearing, Ball, W/HSS, W/Creep, Start Year: 01/01/1987
25 1 SBA040106001 BALL BEARING Bearing, Ball, Start Year: 08/01/1993
26 1 SBA040109040 BALL BEARING Bearing, Ball, Start Year: 08/01/1993


1 2 80300633 SNAP RING RING, SNAP, Int, M80, Start Year: 01/01/1987
2 1 SBA322611360 COUPLING Coupling, W/O Creep, Start Year: 01/01/1987
3 1 301646 CIRCLIP Ring, Snap, Int, M32, W/O Creep, Start Year: 01/01/1987
4 1 SBA322341610 GEAR Gear, Slide A, W/4WD, 2120, 26 Teeth, Drives counter gear Ref. 42, Fig. 7E3, Start Year: 01/01/1987
4A 1 370006 SNAP RING RING, SNAP, Ext, M40, CS040, 2120, Start Year: 06/01/1992
5 2 SBA022700400 LOCK NUT NUT, LOCK, 2120, Years: 01/01/1987-08/31/1992
5 1 SBA399370750 NUT Drive Pinion Lock Nut, Start Year: 09/01/1992
6 1 SBA028100400 LOCK WASHER WASHER, LOCK, 2120, Years: 01/01/1987-08/31/1992
7 1 SBA042530209 BEARING ASSY Bearing, Taper Roller, Start Year: 01/01/1987
8 2 370021 SNAP RING RING, SNAP, M85 x 3, Int, Start Year: 01/01/1987
9 1 SBA042532209 BEARING ASSY Bearing, Taper Roller, Start Year: 01/01/1987
10 AR SBA199280600 SHIM Shim, 0.1T, Start Year: 01/01/1987
11 AR SBA199280610 SHIM SHIM, 0.2mm Thk, Start Year: 01/01/1987
12 AR SBA199280620 SHIM Shim, 0.5T, Start Year: 01/01/1987
13 1 SBA199260070 THRUST WASHER Washer, Thrust, Start Year: 01/01/1987
14 1 210048 BALL BEARING Bearing, Ball, Start Year: 01/01/1987
15 1 SBA322341600 GEAR Gear, Slide A for PTO 1, NH-NA Only, Start Year: 01/01/1987
16 1 SBA322500750 PTO SHAFT Shaft, PTO Assy. Includes: Ref. 17 thru 19, Start Year: 01/01/1987
17 1 SBA399233240 COLLAR Collar, Start Year: 01/01/1987
18 1 SBA040109043 BEARING ASSY Bearing, Ball, Start Year: 01/01/1987
19 2 370006 SNAP RING RING, SNAP, Ext, M40, Start Year: 01/01/1987
20 1 5116701 SEAL SEAL, M35 x 55 x 11 Thk, Oil, Start Year: 01/01/1987
21 1 SBA322990341 GASKET Gasket, Start Year: 01/01/1987
22 1 SBA322150130 COVER Cover Assy., Start Year: 01/01/1987
23 4 SBA011510820 CAPTIVE WASHER SCREW SCREW, CAPTIVE WASHER, Hex, M8 x 1.25 x 20, G5, 2120, Start Year: 01/01/1987
23 4 SBA011510820 CAPTIVE WASHER SCREW SCREW, CAPTIVE WASHER, Hex, M8 x 1.25 x 20, G5, 3415, Start Year: 01/01/1993
24 1 C5NN726A COVER Cap, PTO, Grey, Start Year: 01/01/1987
24 1 SBA378110021 GUARD Cap, PTO, Grey, 3415, Start Year: 01/01/1993
25 1 SBA322360960 GEAR Gear, Slide B for PTO 2, 2120, NH-E Only, Start Year: 01/01/1987
26 AR SBA199280750 SHIM SHIM, 0.1mm Thk, Start Year: 01/01/1987
27 AR SBA199280760 SHIM SHIM, .2 or 0.008", Start Year: 01/01/1987
28 AR SBA199280770 SHIM SHIM, .5 or 0.020", Start Year: 01/01/1987

 

[psuchim]

i changed three of them last year on 1715 fords

I was wondering if you can help me out with a sprag clutch repair/replacement on a 2120 Ford. Does the Counter shaft (#6) typically need replaced as part of the repair? or is it the bearings, clutch and collar only(#s 25, 26, 11, 10 and 12) ?