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Massey Harris & Massey Ferguson Tractors Discussion Forum

MF165 Clutch Replacement Advice

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Author  [Modern View]

01-12-2020 08:32:56

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Per my prior questions and your helpful responses I now have the tractor split with clutch and flywheel removed. Upon inspection I have a few additional questions on how to proceed. I have attached a doc/photo below with three reference arrows. Also of note, I do have some transmission leakage into the clutch housing area that I d like to take care of. I m not sure if it is leaking from top shaft or end plate over bottom shaft. The other debris you see in the photo is dirt and remnants of the PTO clutch plate (i.e. not anything metallic).

1. When I replace the release/throw-out bearing, is this just one bearing or is it a combination of bearings/bushings ?
2. It looks like the PTO/driveshaft seals can be replaced from the front and involve multiple oil seals, bushings, and bearings. I would presumably replace all of these if I can access them from the front, right?
3. I assume this lower shaft cover plate can easily be removed and a gasket replaced. Is there any other seal that should be replaced here?

Regarding the recommendation to replace the pilot bearing, I assume that is the bearing inside the fly wheel, right?

Per the recommendation to get a genuine MF rear main seal, if I purchase from YT is that a genuine MF seal?

Are there any special tools I need to complete these recommendations or does all disassemble and assemble with a reasonable collection of mechanics tools? My manual references a special seal tool MFN-850, do I need it?
All insights and suggestions are appreciated.

Thanks again for your help!

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DavidP, South Wales

01-12-2020 14:13:37

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 Re: MF165 Clutch Replacement Advice in reply to autocarmark, 01-12-2020 08:32:56  
Hello, it's been probably 20 years since replacing the last input housing seal and don't have my workshop manuals to hand. From memory and in order to remove the input housing the tractor will have to be split between the gearbox and centre housing. The top shaft is then withdrawn rearwards allowing a gear inside to 'drop' and allow the input housing to be removed. The seal can then be replaced. This is for a 6-speed transmission. I believe that if Multi-power, the tractor will not need to be split between the gb and ch.
It is always worth replacing the lower plate gasket and making sure that bolts are tight. Make sure that the plate is not deformed around the holes.

Unhook the release bearing/carrier assembly and remove. With the bearing supported on vice jaws and using a large socket or simiar tap the carrier out. Apply copper grease or similar to the fork contact points and inside the carrier.
Yes, the pilot bearing is in the flywheel and can be knocked out easily once the flywheel is removed.
No, a rear crank seal from YT is not likely to be a genuine one. I would not fit anything that did not come out of a MF or Perkins bag.
Your special tool numbers are different from ours. I suspect that this number refers to a seal protector. This is like a thin alu cigar tube. It fits over the spline to protect the seal. Insulating tape used cautiosly is an alternative with oil.
A genuine workshop manual is essential You will of course require a clutch plate alignment tool and release lever screw setting height setting tool and one for the the pto adjusting screws.
DavidP, South Wales

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