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Farmall & IHC Tractors Discussion Forum
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Farmall H presure plate question

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SCOTT IN MO

07-16-2004 10:18:32




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my question is If i put a new clutch in my H is It necessary to replace the presure plate even if the plate looks good.Thanks




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lee

07-16-2004 13:43:59




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 Re: Farmall H presure plate question in reply to SCOTT IN MO, 07-16-2004 10:18:32  
If you've got the cash and you don't want to fool with the old one, replace it with a new one. Myself, I would just replace what's needed. The pressure plate assembly comes apart so all the individual parts can be checked and replaced as needed. Release fingers wear, pins wear, springs may get soft or break. The plate itself must be flat with no cracks or serious heat checks or grooves, same for flywheel. Flatness can be checked with a good straight edge. If you are not comfortable making the necessary decisions buy a new assembly. Last one I did I put new springs, release fingers and pins on the old press plate which checked out good. I checked flywheel for flat, no serious grooves. Did not grind flywheel. Replaced clutch disk and pilot and throw-out bearings with new parts.

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Wayne Swenson

07-16-2004 11:09:45




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 Re: Farmall H presure plate question in reply to SCOTT IN MO, 07-16-2004 10:18:32  
Depends on your finances. As Allen in NE said, replacement is insurnace against future problems. I have done it both ways with success; if you know the clutch was working OK before, you could take a chance and just replace the friction disk. Clean off all oil & grease on the flywheel and pressure plate friction surfaces with a de-greasing spray and check the throwout bearing for roughness; be sure the grease zerk in the flywheel that lubes the bearing is functioning. (Align the single mark on the front pulley with the timing pointer; it lines up the zerk with the hole in the bottom of the clutch housing)
Check the splines on the shaft and use a file to remove any sharpness. The disk must slide easily on the splines to be able to shift and not grind the gears to much. Use a non-greasy lube (WD-40, JB-80, graphite, etc.) and insert into the friction disk. Clean the friction disk with de-greaser also and install the parts withought putting your greasy fingers on the cleaned surfaces.
Center the friction disk and tighten the cap screws carefully. I do not recall the torque value.

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Allan in NE

07-16-2004 10:36:08




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 Re: Farmall H presure plate question in reply to SCOTT IN MO, 07-16-2004 10:18:32  
Scott,

That pressure plate, along with a re-surfaced flywheel is the main 'heart' of that clutch.

Pressure plates most generally "look" good, but often aren't. I'd put in a new high quality pressure plate, clutch plate, grind the flywheel and use a new throw-out bearing. Check that pilot bearing while you are there too....

Do these things and she should last another 50 years.

My view,

Allan

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