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HH100 Points Plunger


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#1 MH81 ONLINE  

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Posted January 25, 2012 - 11:45 PM

The Suburban 10 "kit" I just picked up had the engine off. I actually took 10 seconds tonight to roll it over. It sounds tight and the compression seems OK. I was really excited to see the Points cover on there. When I opened it up, however, the plunger is nearly flush with the casting and looks broken off. it does move, but is stiff to push back.
IF I manage to get ahold of it, does anyone know if it will / should pull out towards the points or does it have to go in towards the crankshaft? I'm not afraid to tear it open, just would rather make it easier if I can.

#2 Bruce Dorsi ONLINE  

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Posted January 26, 2012 - 12:42 AM

The points plunger is straight, and can be removed from the outside.

#3 MH81 ONLINE  

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Posted January 26, 2012 - 01:06 AM

Thanks Bruce, I was hoping someone would say that :D

I will give it a try after I find some room on my bench.

#4 wvbuzzmaster OFFLINE  

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Posted January 26, 2012 - 05:59 AM

Good luck Alan, workbench space can be difficult to find.

... oh, and good luck with the Techumseh LOL.

#5 MH81 ONLINE  

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Posted January 27, 2012 - 12:57 AM

Well, thru a combination of corrosion and not much to get ahold of, I had to pull the cover to get it out. Looks like it started it's life at 1/8 x 3/4". Now to get to finding one :D

The inside of this engine looks great. It's never been open, but there's almost no sludge in there. The oil was clean too. I think this one has been taken care of. We'll see.

#6 Cvans OFFLINE  

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Posted January 27, 2012 - 01:47 AM

Good luck with your project. I hope it runs like a champ when your done.

#7 olcowhand ONLINE  

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Posted January 27, 2012 - 10:26 AM

Common problem is a sticky plunger on these. I had to use emery cloth on my HH120 on my 67 MF12H to stop it from sticking.

#8 bhts OFFLINE  

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Posted January 27, 2012 - 10:46 AM

Common problem is a sticky plunger on these. I had to use emery cloth on my HH120 on my 67 MF12H to stop it from sticking.


I will agreee with Dan as long as it is not broken a good cleaning can save the plunger. Only bad thing is these are NLA as a set or just the plunger unless you can find a set sitting on a dealers shelf somewhere.

#9 Bud OFFLINE  

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Posted January 27, 2012 - 11:00 AM

Here is one on ebay if it's anygood. Massey Ferguson MF10 Tractor Tecumseh HH100 10hp Engine Point Push Rod | eBay
  • MH81 said thank you

#10 wvbuzzmaster OFFLINE  

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Posted January 27, 2012 - 01:38 PM

Couldn't you just use any old pin off the shelf that measures right?

#11 ckjakline OFFLINE  

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Posted January 27, 2012 - 01:50 PM

As long as you cut it to the right length and close to o.d of the orig plunger you can use steel.I cut the head off a nail and used that for my 66 MF 10.

#12 MH81 ONLINE  

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Posted January 27, 2012 - 05:40 PM

The originals are made out of a fiberous material that won't wear the lobe on the cam. The one place I called today suggested aluminum, another said to use brass, the third said to drill the hole out & then you could use a Kohler plunger.

BTW, the one listed above in the eBay link sold via By it Now... To me. :D $5.47 incl shipping. If it's the wrong one, oh well.

#13 wvbuzzmaster OFFLINE  

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Posted January 27, 2012 - 06:01 PM

Congratz Alan!




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