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  1. #1
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    Ford 601 Workmaster

    Default Ford 601 Workmaster PTO Problem

    This weekend I was bush hogging and stopped the Tractor and turned off the PTO. I then drove about 100yds and noticed a whining noise from the rear end area which I have never heard before, I then tried to engage the PTO but was unable to. It would make a grinding sound like it was almost engaged but not completely. The lever was very hard to move and I was afraid if put to much pressure on it I would brake it. Should I just force the lever and see what happens? I don't know if it makes any difference, I had also hit a very large rock just before I stopped that seemed to almost stall the Tractor. Any suggestions would be appreciated.

  2. #2
    Epic Contributor Soundguy's Avatar
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    Default Re: Ford 601 Workmaster PTO Problem

    1, i'd double check what kind of shear protection your mower has. a rock that nearly stopepd you should have sheared the shear pin or slipped a slip clutch.

    since it didn't.. it may have actually bent the rear spline on the pto shaft.. this could do 2 things.. 1, when you turned it off, it may not have turned off all the way and may have chewed up the sliding coupler.. and / or the bend now prevents the sliding coupler from moving all the way.

    I'd pull the plate with the shifter in it and take a looksee.

    soundguy

  3. #3
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    Ford 601 Workmaster

    Default Re: Ford 601 Workmaster PTO Problem

    UPDATE: I had a chance to look into the problem and discovered that PTO shift shaft is stuck and doesn't move more than 1/8". I even put a little extra leverage on the lever and it still wouldn't move. I took the plate off and can see the shaft but no visible damage, but I can't see the whole shaft very good. I'm not sure what the next step should be. Remove PTO shaft? How do you get the PTO shift shaft out. I have a manual but all it shows is the shaft components but no instructions on how to remove it. Help?

  4. #4
    Veteran Member whodat526's Avatar
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    Default Re: Ford 601 Workmaster PTO Problem

    remove the four bolts in the back of the tractor that is around the pto shaft and it will come out there then with the pto shift lever cover out u can remove the sliding collar and check it also

  5. #5
    Epic Contributor Soundguy's Avatar
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    Default Re: Ford 601 Workmaster PTO Problem

    keep in mind you need to drain the hyds and diffy BEFORE you pull the pto shaft..

  6. #6
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    Ford 601 Workmaster

    Default Re: Ford 601 Workmaster PTO Problem

    UPDATE: I pulled the PTO Shaft tonight and it looks fine, no twist. I can move the shift lever easily with the PTO removed. When I put PTO back I can't move the lever anymore. It seems that the problem is with the gear on the end of the PTO and the gear it meshes with which I guess comes from the Transmission. I'm not sure how to get a good look at those gears. Any suggestions would be appreciated.

  7. #7
    Epic Contributor Soundguy's Avatar
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    Default Re: Ford 601 Workmaster PTO Problem

    is the very back of the pto shaft splined area chewed or damaged in any way.. .. even a SLIGHT twist will cause a hard engagement.

    also.. is there any slop fore / aft of the pto shaft in the bearing carrier? if so, the wear ring may have slipped or the bearing is loose. this will let the pto shaft move fore and aft and in many cases 'walk' itself out of engagement.. this usually chews the end up. Also.. and especially if the driveline is too long.. or not lubed, the pto shaft end ( aft end at the coupler int he tractor ), can beat backwards ad MUSHROOM deform, and be difficult to engage. use a mic on the splines front to back. in some cases.. taking a flat file to very mildly mushroomed or slightly twisted splines will make them wor.

    if the pto shaft looks true, next look at the sliding dog clutch.. part #12 in the diagram I'm attaching.

    here's the parts listing to go with the diagram.

    ps.. you can remove that or peer in to inspect it pretty easilly.

    good luck.. hope it helps

    soundguy

    1 1 NAA770A Support, PTO, NAA, NAB, No Longer Serviced, Years: 01/01/1953-12/31/1954
    1 1 NCA770A SUPPORT Support, PTO W/4-Speed Transmission, No Longer Serviced, Start Year: 01/01/1955
    1 1 NDA770B Support, PTO W/5-Speed Transmission, All Purpose & 900 Row Crop, No Longer Serviced, Years: 01/01/1955-12/31/1959
    2 AR NAA722A STOP Stop, PTO Shifter
    3 1 9N719 Rail, PTO Shifter, No Longer Serviced, Years: 01/01/1953-12/31/1954
    3 1 NCA719A SIDE RAIL Rail, PTO Shifter, Except NAA, Start Year: 01/01/1955
    4 AR PL PROCURE LOCALLY Washer, Lock, 3/8"
    5 1 PL PROCURE LOCALLY NUT,3/8-24, Hex, Start Year: 01/01/1953
    6 1 797234 SPRING SPRING, PTO Shifter, Rail Mesh, NAA, Years: 01/01/1953-12/31/1954
    6 1 83407013 SPRING SPRING, PTO Shifter, Rail Mesh, Except NAA, Start Year: 01/01/1955
    7 1 145222 BALL BALL, 3/8", Steel, Start Year: 01/01/1953
    8 1 PL PROCURE LOCALLY BOLT, 3/8-16 x 1 1/4", Start Year: 01/01/1953
    9 1 233274 SEAL Seal Assy., Transmission Countershaft, Start Year: 01/01/1953
    10 1 NLS No Longer Serviced Fork, PTO Shifter {NAA720A}, Years: 01/01/1953-12/31/1954
    10 1 NCA720A FORK Fork, PTO Shifter, No Longer Serviced, Start Year: 01/01/1955
    11 1 128999 O-RING O-Ring, -111, 70 Duro, .424" ID x .103" Thk, Shifter Fork, W/NAA720A, Years: 01/01/1953-12/31/1954
    11 1 14457281 O-RING O-Ring, -114, Cl 7, .612" ID x .103" Thk, Shifter Fork, W/NCA720A, Start Year: 01/01/1955
    12 1 NAA717A SLEEVE Sleeve, PTO Clutch, 2.16" Overall Length, No Longer Serviced, Years: 01/01/1953-12/31/1954
    12 1 NCA717A SLEEVE Sleeve, PTO Clutch, Except NAA, 2.16" Overall Length, Start Year: 01/01/1955
    13 2 9N754 RING Ring, PTO Bearing Snap, Years: 01/01/1953-12/31/1954
    14 1 210064 BALL BEARING BEARING, BALL, Assy, PTO Shifter & Shaft, Optional W/B & C, NAA, NAB, Replaces 9N715B, Years: 01/01/1953-12/31/1954
    15 1 9N723 LEVER Lever, PTO Shifter, Except Offset, No Longer Serviced, Start Year: 01/01/1953
    15 1 312844 LEVER Lever, PTO Shifter, Offset Only, No Longer Serviced, Start Year: 01/01/1959
    16 1 60518S RIVET Rivet, Button Hd, 1/4" x 1-1/4", Start Year: 01/01/1953
    17 1 NAA721D Plate, PTO Shifter, NAA, Replaces P/N NAA721C, No Longer Serviced, Years: 01/01/1953-12/31/1954
    17 1 NCA721B Plate, PTO Shifter, Except NAA, No Longer Serviced, Start Year: 01/01/1955
    18 AR PL PROCURE LOCALLY Nut, Hex, 7/16"-20
    19 2 PL PROCURE LOCALLY Stud, 7/16"-14-20 x 1.68, NAA, Start Year: 01/01/1953
    2 PL PROCURE LOCALLY Stud, 7/16"-14-20 x 1.68, Except NAA, Start Year: 01/01/1955
    20 2 PL PROCURE LOCALLY Stud, 7/16"-14-20 x 1.3/8", NAA, Years: 01/01/1953-12/31/1954
    4 PL PROCURE LOCALLY Stud, 7/16"-14-20 x 1.25, Except NAA, Start Year: 01/01/1955
    1 PL PROCURE LOCALLY Pin, 5/8" x 1/2", L/PTO All Purpose Heavy Duty Industrial, Start Year: 01/01/1955
    1 353081S BALL BALL, 5/16", Steel Offset Only, Start Year: 01/01/1959
    1 NDA784A RETAINER Retainer, PTO Countershaft W/5-Speed Transmission, All Purpose & 900 Row Crop, No Longer Serviced, Years: 01/01/1955-12/31/1959
    1 C0NN4022A Vent Assy., Air, PTO Shifter Plate, L/PTO, All Purpose & Heavy Duty, No Longer Serviced, Start Year: 01/01/1955
    1 9N4131 GASKET Gasket, Shifter Plate Cover to Housing, Start Year: 01/01/1953
    1 86613266 CUP Cup, Transmission Countershaft Rear, Bearing W/5-Speed Transmission, Years: 01/01/1955-12/31/1959
    Attached Thumbnails Attached Thumbnails -ptoshifter601-gif  

  8. #8
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    Ford 601 Workmaster

    Default Re: Ford 601 Workmaster PTO Problem

    Soundguy: Thanks for the good information. The end of the ahaft looks good, no scrathes or marks of any kind. I will measure in the morning to make sure it isn't mushroomed. Regarding the clutch Dog, I can feel this with my hand thru the side when I removed the side plate and shift lever, Should I be able to pull this out? It looks like according the diagram there is a snap ring in the way. I have a shop manual (your reccomendation from an earlier post)

  9. #9
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    Default Re: Ford 601 Workmaster PTO Problem

    It does seem that the PTO shaft does have a slight twist in it now that I have had a chance to examine it in better light attached, are the pictures. Is it possible that even this little of a twist can cause the problems I am having? You have to look at it from just the right angle to see the twist.
    Attached Thumbnails Attached Thumbnails -imgp3119-jpg   -imgp3120-jpg   -imgp3121-jpg   -imgp3122-jpg  

  10. #10
    Epic Contributor Soundguy's Avatar
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    Default Re: Ford 601 Workmaster PTO Problem

    yep.. it's slight. here's the issue.. from the beginning of the twist to the end of the twist. if there is more distance that the splines have moved in reference to a parallel line that they should be on.. if that difference is more than the tolerance fit between the sliding coupler .. then it will cause a problem

    you could dye and slide together and see where it removes the dye.. or try to hand fit and tap it in and ovserve.

    I might try to file the pto shaft a hair to true it up. it's a 100$ gamble at most.. and your twist is VERY slight.

    file a lil then check.

    and yes.. 2 rings and a support bearing back there..

    feel in there first to see if the leading edge of the internal splines are damaged.. might use a strong lamp from the rear.. or snake light / mirror..

    soudnguy

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