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Pto Massey 165 multi power

S

sam un ont

Member
The problem I am having is that the pto will not engage without grinding and the pto when engaged will slow down but never completely stop with the pedal depressed
I have adjusted the pto clutch and the pedal free play with no success
I have found that while cranking the engine (without starting) I can depress the clutch and engage the pto without grinding, let the pedal up to turn the pto, and then depress the pedal and the pro will stop
With the engine off I can engage the pot depress the clutch and then freely turn the pot

The problem arises once the engine is running
Any help is greatly appreciated

Sam
 
The three PTO RELEASE bolts need the gap adjusted on the flywheel clutch assembly. Get the service manual out, and adjust the bolts to .080 inch clearance through the bottom inspection opening. Outside linkage WILL then need reset also when done.
 
As I have previously stated I have already adjusted the pto clutch and adjusted the outside pedal free play
I am leaning now to possibly a hydraulic release problem
Sam
 
You DO have the two stage flywheel clutch? Then the release screw gap is either not set right, OR there's a more serious problem inside, like the lining coming off and doubling up causing drag. I've also seen the PTO pressure plate crack too, and it will never release right when that happens. Had that on a 265 couple years ago. Even tried setting the screws to .060 on that one and it still dragged with the cracked plate..
 
Hello Sam -

DT mentions a setting of .060 on those 3 bolts inside the housing - while he normally recommends .085 .

We routinely use the 060 setting now, after my first 3 or so overhauls still ground at 080 - 085. Haven't figured why - possibly worn hinge pins or linkage?

But the grinding stopped, and no further issues popped up as a result of the closer setting.
 
Hi, as has been suggested reducing the clearance to around 060" may help but from what has been said it sounds a little more like oil contamination causing a drag on the plate or possible rust present on the splines which is not allowing the plate to move when the pressure is taken off. Remove the inspection plate under the clutch housing and using a flashlight inspect the clutch housing thoroughly for any oil residue present around the clutch cover or on the springs. Check also for any uneven gap on the three adjusting bolts.

DavidP, South Wales
 
All good comments. However I have set the ptoclutch at .060. And it did help a bit.
I have also put the pto

in gear (engine off)and had the clutch depressed ,crawled underneath and was able to rotate the disc with a screwdriver so I am pretty sure that the problem is not there, but I have been wrong before
Sam
 

I haven't messed with a lot of two stage clutchs but I have seen/experienced already that the gap can be set correctly but if the pedal lever isn't adjusted properly the throwout can go to far and cause hangup/grinding. It's very easy to tell if this is happening. Two ways. One, just don't push the clutch quite as far and see if the pto stops spinning or engages/disengages with no grinding. I was also able to see it happen through the inspection cover. I could see the secondary clutch release, and then because the pedal was misadjusted, it went a little further and the clutch tightened again.

Best of luck with it.
 
I think that I have finally got to the bottom and the answer was staring me in the face.
I am 99%sure that it is the sloppy clutch lineage. There appears to be almost 1/2inch plat particularly in the Clevis as I I can jam a nail in to take up the slack and the pto will stop
Now I am on the hunt for a mew Clovis

Thanks to all of you for your valuable input

Sam
 
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