3-Point Hitch PTO 3 pt hitch problems

[Kindasecluded]

Good day. Got a bit of a problem where as i'm fixing the grandpas 1966 MF135 3 cyl Perkins diesel. From what I had seen on here a while ago its looking to me to be a 135 orchard. For quite some time the PTO has been full time live. The engage arm moves but will not disengage the PTO rather just grinds until you let go and the arm drops back down. Is there a declutch pedal??? There is a pedal on the right but when I step on it I need a prybar to get it back up. Now another serious issue we had recently rear its ugly head is that we have no hydraulic response for the 3 point hitch. The fluid level is good, but I noticed today there is an oil patch on the ground under the left sie and it appears to be seeping out of the cover for the PTO control. Any info would great. This machine still runs strong and its a shame to see it sit idle

 

[shona13]

g,day kindasecluded.
If you remove the pto sideplate that is the one with the pto lever attached remove all of the bolts and the cover will come out with the pto operating fork attached ,if you look inside down the bottom of the gearbox you will see the pto gear and selector grove that the lever runs in,with the engine stopped try moving the gear to the front of the tractor using a large screwdriver ,it sounds like it is already engaged if so try sliding it to the rear about one inch then you should be able to turn the pto shaft by hand if so and it was easy to slide the gear fit the pto plate carefully in a vice and check that the lever CLICKS into the three positions engine pto ,neutral and ground it should move with a definite click stop if not looking at the lever where it fits onto the shaft there is a Roll /Spring Pin using a small pin punch knock it out and pull the assembly to bits clean up the shaft with emery you will most likely find the hole in the shaft is worn a bit so long as it is not to bad it can be reused reassemble everything using a new O ring and some grease,if you dont have a new pin use a grade eight setscrew ,bolt and nut not to tight and gently peen the thread of the bolt just to stop it coming undone, when you are happy all is good refit using a new gasket and carefully re fit the cover making sure the pto fork fits in the grove it is a good idea to mark the cover before removal .
That is all there is in the pto selector part if it still does not work you may have to have a look at the clutch side of things let us know and we can go from there.
Just another thought when you have the cover of check the condition of the oil if it has water in it( milky looking) I would change it ,it takes 8 of Your Gallons I would also remove the hydraulic filter and give it a good clean it is easy to get at and will save you removing the cover twice.
Happy Days
Hutch

 

[shona13]

Hi again .
The other part of your question the lever on the right hand side is the differential lock when pushed all the way down it will lock both drive wheels giving more traction in sticky situations ,just be mindfull that when it is engaged the tractor will be reluctant to change direction this is due to the fact that the both wheels are DRIVING, Caution before you use the diff lock spray and plenty of oil and ease up the shaft where it pivots on the axle trumpet housing when working properly the lever when pushed down will spring back up on its own .

Another thing you may find is the foot lever is held onto the shaft via a friction clamp bolt and sometimes with the operator applying to much PRESSURE on the lever it will slip and turn on the shaft ,if you find this happen loosen the clamp bolt a little bit and pull the lever back up say about 5 inches and lock the bolt in this position.

Now when using the diff lock say you find that the drive wheel is starting to or about to spin press the pedal down and hold it down dont press to hard what is happening in there is the diff has a crown type nut and the sliding diff lock matching crown gear have to MESH so as the wheel is spinning the two eventually line up and you will feel the pedal click down and engage to stop it jumping out when you still need it keep moderate pressure on the foot lever .
When you dont need the diff lock take your foot of and let the lever disengage on its own you will find sometimes it will HANG ON ,It wont come out, this is due to the fact that the load /torque difference is still present between the two axles to help release, turn the steering to the left this will change the turning radius of one or the other axle and relieve the torque stress between the two axles,normally you will not have trouble with it but sometimes it takes a couple of goes at it to get it to release if it doesnt try it in reverse gear.
Happy Days
Hutch.