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dhoadley

Pull a pulley?

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dhoadley

I'm digging into the original engine on my 728 Broadmoor. Looking thru the sparkplug hole, the piston is unmoved by the rotation of the crankshaft.XX( I'd like to crack open the case and find out why. Just how in the censored1.gif do you pull the double pulley off the end of the #^!@* crankshaft?! Any suggestions would be greatly appreciated.^ Thanx, Dave

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timflury

The spark plug hole is over the valves. Are you looking straight through the hole? Or to the piston side of the hole?

I might take a lot of your favorite penetrating oil to get the pulley set off. That and someone might have burred up the shaft when they cranked down the setscrew.

Some heat might be needed as well.

Most important is patience.

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powerking_one

David,

Since this engine sounds like it has a thrown rod, I'd take the engine off the frame, set it upside own on the workbench and soak the end of the crank with Kroil/PB-Blaster for a week or so. Then go to an Auto-Zone or similar auto parts place that has a free rental tool program. Get a gear puller set which has Bearing Separators with it. Using the B.S. distributes the pulling forces nearly 360 deg so as to minimize damage to the pulley sheave. Go slow on the pulling force. If it starts to move, stop, then tap the pulley back on and douse it with more penetrating oil and repeat; sliding it back and forth and hopefully it'll come off without damage to the pulley assy.

https://www.google.com/search?hl=en&site=imghp&tbm=isch&source=hp&biw=1024&bih=620&q=bearing+separator+pulley+removal&oq=bearing+separator+pulley+removal&gs_l=img.3...1261.24970.0.26339.50.22.12.16.22.0.236.2415.0j13j2.15.0....0...1ac.1.54.img..24.26.2319.3VGew8duYSs#facrc=_&imgdii=_&imgrc=LQlqB1ISDV0ZQM%253A%3B91r1DXroBf18QM%3Bhttp%253A%252F%252Fphotos.cubfest.com%252Falbums%252Fuserpics%252F10649%252F3_puller_in_place_%28Small%29.jpg%3Bhttp%253A%252F%252Ffarmallcub.com%252FphpBB2%252Fviewtopic.php%253Ff%253D11%2526t%253D44517%3B640%3B426

https://www.google.com/search?hl=en&site=imghp&tbm=isch&source=hp&biw=1024&bih=620&q=bearing+separator+pulley+removal&oq=bearing+separator+pulley+removal&gs_l=img.12...0.0.1.202608.0.0.0.0.0.0.0.0..0.0....0...1ac..54.img..24.26.2319.Ej-5DmTZdlk#facrc=_&imgdii=_&imgrc=RWn0BzEFhQkEYM%253A%3Baq7irRy_tpgjJM%3Bhttp%253A%252F%252Ftetoolsusa.com%252Ftools%252Fimages%252F2-1183.jpg%3Bhttp%253A%252F%252Ftetoolsusa.com%252Ftools%252Findex.php%253Fmain_page%253Dindex%2526cPath%253D192%3B584%3B553

Tom (PK)

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dhoadley

PK1, I have the engine out, upsidedown, and soaking in PB. I guess I'm on the right track already. I have a 2 & 3 arm puller, so I guess I need to get a gear puller. The pics were very helpful. Thanx, Dave

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CTD01

I have always loosened the set screws spray the pulleys up good get a socket that fits over shaft. A 1" deep in your case then tap the pulleys on until they bottom out then clean the surface of the shaft where the pulleys came from and then install your puller or a couple pry bars off the hub. I really dont like pulling off the sheet metal part of the pulley but sometimes you have to.

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GrincheyOne

Dave,

I have always found the HFT bearing pullers of great assistance in removing pulleys, etc w/o damage to the pulleys/bearings, and other such parts (like steering wheels), out side of the set (lots of times on sale (watch the site)) there is a larger puller with out other gadgets, but parts of the set can be used with it. It is a great investment for working on spindles. Set SKU is 93980 @

http://www.harborfreight.com/bearing-separator-and-puller-set-93980.html

The BIG MO puller/separator SKU is 03979 @

'>http://www.harborfreight.com/large-bearing-separator-3979.html

Suggest you have some 7/16-(don't know pitch) threaded rod on hand, for

this baby, or get creative!:Q

Cheers,

Wayne

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rich_kildow

Don't use those jaw/arm pullers on the pulley. The outside is pretty weak to forces in that direction and you will ruin it...don't ask me how I know. I can also vouch for the harbor freight bearing puller set up with the arms or rods as shown in the linked picture from Tom. They are one of the harbor freight gems and I have used them with my 20 ton air-over press for all sorts of stuff and they hold up perfectly.

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dhoadley

Well, I went to HFT yesterday, (didn't even know there was one less than 10 miles from me) and picked up the Large Bearing Separator. Best 30 bucks I've spent in awhile!dOd

PA040539.JPG

Much soaking, putting a little more pressure, more soaking , move alittle more, etc. Decided to pound it back down with an appropriately sized socket, but because I was too lazy to remove the Separator after removing the puller....

PA050542.JPG

wahLook for my ad in the classifieds "parts wanted".:o)I also noticed, after the fact, that this was two separate pulleys and that I only removed one set screw. No wonder it was soo hard to pull off!:o

PA050541.JPG

Does anyone else have problems getting an Autofocus camera to focus properly?I'll be starting a new thread shortly when I autopsy this dead engine. Thanx for the input, Dave

PA040539.JPG.c32815a60b7f0208c2cd67aa3f879b13.JPG

PA050542.JPG.39c08c350a9e263ef392bb7499deadce.JPG

PA050541.JPG.07d1002f1dd79e3851e73155734e6e9d.JPG

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GrincheyOne

Dave,

on my Nikon, there are several; menu choices that aide the auto focus.

Likely for the shots we like to take (detail) the macro setting is the best. a decent tripod also helps, since the auto focus is a delayed process...holding the shutter release down for a short time to allow the camera to adjust the lens.

If I am a bit unsteady, I normally post process my shots with PaintShop Pro 6.0, which has a "sharpen" function. Except when it is beyond repair.

Cheers,^

Wayne

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bowhunt4life

I have used Phoenix MFG out of Horicon, WI for pulleys. They have pressed pulleys and cast pulleys. You can search your size and their prices are reasonable.

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rich_kildow

I've had pretty good luck finding pulleys at Northern Tool if you have one of those near you. I've managed to replace several of the idlers on my 7116 with their stuff and they have been holding up great.

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dhoadley
quote:Originally posted by rich_kildow

I've had pretty good luck finding pulleys at Northern Tool if you have one of those near you. I've managed to replace several of the idlers on my 7116 with their stuff and they have been holding up great.


id="quote">
id="quote">The nearest Northern Tool is 523.3 miles.:D

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rich_kildow

523.3 miles, huh. I guess I'm spoiled at 70 miles to either of those stores. If you have anything with a good farm section like Fleet Farm, Farm and Fleet, TSC, L&M Fleet, etc, you may have some luck there as well.

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dhoadley
quote:Originally posted by BLT

What is diameter of broken pulley? Bore should be 1" X 1/4" KW, I think.


id="quote">
id="quote">As always Bob, you are correct about the bore. Outside diameter is 3".It's the drive pulley for a late 60's Broadmoor. Thanx, Dave

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