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Massey Harris & Massey Ferguson Tractors Discussion Forum
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Lining Up Perkins with Dual Disc Live PTO...

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FullPullLarry

07-08-2019 20:27:00




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What fun it is to line up a Perkins diesel into my MF35 with the two clutch splines. Using the fork lift doesn't give me much play on the engine angle to get the pilot in the bearing correctly so the engine sits a couple inches away from the transmission. It should slide together easy if I could get the angle right. No amount of lifting and shaking up and down while the engine is hanging from the forklift does the trick to line the pilot up. I guess I'll have to get my engine crane. Any particular tips for lining up this transmission shaft combo with an engine...and yes I have a clutch tool.

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DavidP, South Wales

07-10-2019 11:40:17




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 Re: Lining Up Perkins with Dual Disc Live PTO... in reply to FullPullLarry, 07-08-2019 20:27:00  
Hi, engines seem to have a life of their own sometimes. Either they fall in or you will have a job. It is essential not to keep turning one spline against the other as the ends can burr. As DT has said, the gap must remain parallel. Long bolts are a good idea but you must ensure that the engine is at the right height so that it remains free on the bolts. I use light springs on the bolts to keep a gentle pressure on the engine. With the height and gap right you can either engage engine pto and turn it with a screwdriver through it or just jiggle the front of the engine slightly. Once it has started fit a couple of bolts but DO NOT pull the engine in. As it engages further follow up with the bolts loosely. Once closed up tighten a couple of bolts and if you can check the clutch operation just in case you have to split it again. Tighten remaining bolts. Remove screwdriver if used.
DavidP, South Wales

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FullPullLarry

07-09-2019 11:41:00




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 Re: Lining Up Perkins with Dual Disc Live PTO... in reply to FullPullLarry, 07-08-2019 20:27:00  
Oh I've had all thread in there but I haven't had the two halves get closer than about 1.5 inches. Good tips on the PTO turning as well as turning the transmission through fill hole. To be honest I think I still need to get better alignment plus what you guys suggest with turning the drivetrain.



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2tractors

07-09-2019 06:00:41




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 Re: Lining Up Perkins with Dual Disc Live PTO... in reply to FullPullLarry, 07-08-2019 20:27:00  
I use allthread and whatever you do don't draw it together that last inch with the bolts. It will warp the disc.



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Bob N.Y.

07-09-2019 05:38:52




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 Re: Lining Up Perkins with Dual Disc Live PTO... in reply to FullPullLarry, 07-08-2019 20:27:00  
Cut the heads off from a couple long bolts of the correct size and thread them into the bell housing on opposite sides of the tractor to serve as guide dowels as the 2 halves come together.



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Dieseltech

07-09-2019 04:12:38




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 Re: Lining Up Perkins with Dual Disc Live PTO... in reply to FullPullLarry, 07-08-2019 20:27:00  
As Bob said, with PTO lever in engine drive turning it will align the PTO shaft input splines. Both halves MUST be parallel top-bottom, and side to side. Another trick I use is to shift the hi-lo lever in center-start position, then shift the main lever into either first or reverse. Now with the oil fill cap off use a long bar to turn the large gear, this will turn the main input shaft so it aligns with the clutch plate spline. USUALLY the main clutch enters first, then the PTO enters, and you will see tractor halves slide together.

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John Deere D

07-08-2019 22:29:17




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 Re: Lining Up Perkins with Dual Disc Live PTO... in reply to FullPullLarry, 07-08-2019 20:27:00  
I've replaced dual Clutch assemblies and or overhauled several MF FE 35 X..Perkins Engine...

I always check the Clutch splines (female) as to fit to the Input shafts spline (male)...

Assembled clutch assembly onto flywheel (borrowed alignment tool)......

With PTO lever engaged..Had a helper TURN the PTO SHAFT...Inputs from transmission aligned properly to Clutch assemblies and Pilot bearing...


Bob...

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John Deere D

07-08-2019 22:46:03




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 Re: Lining Up Perkins with Dual Disc Live PTO... in reply to John Deere D, 07-08-2019 22:29:17  
Also.. I had alignment pins threaded into the forward matting face of the transmission...

Bob..



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