175 clutch issue

mechanic

Member
I have question. My 175 is not holding speed going up a incline. My PTO shaft spinns most all the time even with the lever disengaged. But I can make it stop spinning by revving the engine up and down with the lever off. What do you think?
 
Hello,
First of all do you have free travel on the clutch pedal? If your pedal is of the rear pivot type you should be
able to press the pedal around 1/2" to 1 1/2" before you feel pressure. The alternatives are that the main clutch
plate has worn out or you have oil on the faces probably from a leaking rear crankshaft seal..
You have not mentioned whether you have an independant PTO but your wording suggests this. If you do have an IPTO
then it is likely that the brake pad which acts on the clutch pack drum will have worn and lost its 'bite'. You
have not mentioned any problem driving an implement so can it be assumed that that side of it is OK? A small
piston in a housing operates the brake. The seal may have split and consequently you are losing oil but able to
overcome it by increasing the flow/pressure.

DavidP, South Wales
 
Oil is present. I suppose I need a rope seal. Is there a newer and or better seal to use? Updated is what I would call it.a
 
If there's oil in the clutch housing, what color is it? If really black that's engine oil, if more clear it's rear end oil, most likely from the trans and PTO input shafts area. I've seldom seen black oil on the clutch, it's more likely from the rear. Make sure the drain hole is open, and the cotter pin is still in place too.
 
If your tractor doesn't have it drill something like a 3/16" or smaller hole in the bell housing along with a smaller cotter pin like the one near the back of the clutch housing. Some even drill the plate on the bottom of the clutch housing so it can't hold any oil.

Drill hole here.
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OK, so I finally got around to splitting this tractor. What I found was a bunch of hydraulic oil. This 175 has the split torque clutch. Only one disk. Anyway, the other thing I found was the splines on the on the pressure plate were worn badly, as well as the retainer splines. So, can I replace the retainer with out tearing the transmission to peaces? I am going to do all the seals and bearings plus clutch as well.
 
OK, I made a mistake in my last post. The seal retainer is OK. It actually looks to be the splines on the pinon drive shaft. The outside one that drives the hydraulic.
 
On replacing that shaft it depends on when your tractor was built. On the early ones you remove the 4 bolt cover below the input shaft (that covers the pto/hyd shaft) that shaft comes out the front before the input shaft can come out. On the later year ones you have to split the transmission from the rearend because that pto/hyd shaft has to come out of the rear of the transmission.
 
It is a 67 model. I wonder if I could put the dual clutch in this tractor instead of the split torque clutch? I wonder if it would be better? Anyway, going to replace the PTO pinon shaft, clutch, all seals, throw out bearing, release springs and the rear rope seal on the engine. Anyway hing else you can think of would be helpful. I mean, got it apart, may as well get her ship shape!
 
So I have disassembled everything from the flywheel to the retainer. Looks like I need everything I thought. Question, where can I buy the metal sealing washers on the PTO pinon? There seem to be 2 sets one one the PTO pinon and the other on the shaft that runs inside the pinon shaft.
 
OK, I have some questions for you Massey guru's on parts? I am having a hard time figuring out the parts for this repair. I can't seem to find my exact PTO pinion shaft and retainer seals and such? My retainer has a brass looking bushing and rubber seal, and another rubber seal on the inside from the oil side of the pinion. I need part numbers to go with what I have? The manuals don't exactly show the parts I need. Any help would be great.
 
I did, it really does not help much. There seems to be a upgrade on the IPTO retainer at some time in the manufacturer of the 175. I am having the clutch rebuilt right now. So as soon as I can get the seals figured out I will be putting it back together. I went buy AGCO today, and they are about useless as can be. They want you to buy a new one instead of restoring an antique tractor.
 
The multi-power does use some different seals, and other pieces that a non-multipower doesn't. So the parts should be in the book, the pictures in the parts book as you know are not as detailed. Around where I am my brother has the only multi-power tractor I've ever seen in person so my experience with them parts wise is limited. I think my brother changed the seals in his about 25 years or so ago.
 
OK, here is where I am at with my tractor repair. Once I got everything apart and inspected. I count the number the PTO retainer and the PTO pinion were groved from the sealing rings. Hence the hydraulic leaking into the bell housing. So, replacement is in the near future. Problem is they don't make the old style retainer with the bronze bushing anymore. So time down the line they changed the design. The went to a needle bearing and a seal in stead of the bushing. You have to change the retainer and release bearing and carrier. So, off to the races....any input would have great....
 
If you have a MF dealer with a good parts guy, he maybe able to find another dealer who may have the old style parts you need. That is the only thing I can think of besides having to swap out all those other parts just because of a different seal. Maybe try calling AGCO answers at 877-525-4384 they have helped me in the past on some parts issues.
 
I called them and everybody else. My original retainer is not serviced anymore. So I just upgraded to the pto retainer with the needle bearing and larger throwout bearing carrier. It cost me $400 to upgrade, but I think it will be worth it. This tractor runs good. I will start the rebuild when I get the clutch back and new parts come in.
 
Well I got all my parts in for my clutch/PTO pinion retainer replacement. Start in the morning assembling everything. Should be interesting......
 
If, or when my brother has to re-seal the transmission on his 150 with multi-power. I'm sure he will love having to spend an extra $400.00 on the pto retainer/throw out bearing carrier.
 
Ya, it is about $450 for the PTO pinion,retainer,throwout bearing and carrier and all the bearngs and seals and such. New clutch about $320. But it is all new.
 
Well, all parts are assembled and ready to be installed. BUT, I have one problem....my PTO driven gear has a broken tooth. Didnt see it at first turned everything to line up splins and such and there it was. I will have to replace it. I think that explains why I had the odd wear patterns on my pinion shaft splines. Any suggestions on how to get to this gear?
 
Got it he clutch in and transmission back together today. Ready to reinstall into tractor. Whew, pretty good job.
 
Transmission is connected back to the rearend assembly. Tonight I will connect the engine/clutch and the transmission together.
 

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