bo dawg 516 #1 Posted May 10, 2021 Would this be the correct pully for this Cessna pump? Shaft on pump is like 7/16” but the pully is 5/8”. Fits sloppy. Plus key way is different size on pully than pump. Share this post Link to post Share on other sites
Maxwell-8 4,275 #2 Posted May 10, 2021 If its gone wobble, it could wear out the shaft. I personally wouldn't use it then. but don't know much about the cessna pump.So i am gone let de experts do their word. Share this post Link to post Share on other sites
bo dawg 516 #3 Posted May 10, 2021 19 minutes ago, Maxwell-8 said: If its gone wobble, it could wear out the shaft. I personally wouldn't use it then. but don't know much about the cessna pump.So i am gone let de experts do their word. it had thin aluminum wrapped around shaft and pulley shoved on tight but cocked. I want to make fit right. Or find correct pully if this is wrong one. Share this post Link to post Share on other sites
wallfish 16,986 #4 Posted May 10, 2021 It doesn't appear there's anything wrong with the pump shaft so the pulley is wrong if it doesn't fit tight 1 Share this post Link to post Share on other sites
bo dawg 516 #5 Posted May 10, 2021 What is the proper size pulley that would have came with the loader? Share this post Link to post Share on other sites
Achto 27,511 #6 Posted May 10, 2021 7/16" bore seems to be a bit of an odd ball size. If it were me, I would find a pulley with the correct o.d. and a 3/8" bore. Then I would drill the bore out to 7/16" and have the key way re-broached. I realize not everyone has this capability though. A machine shop could do this for you but I fear the price would be much more than the pulley. I did a quick search on 7/16" bore pulleys and came up dry. 1 Share this post Link to post Share on other sites
roadapples 6,983 #7 Posted May 10, 2021 I had to replace the seal on mine. Pretty sure the shaft was 9/16".... 2 Share this post Link to post Share on other sites
Achto 27,511 #8 Posted May 11, 2021 (edited) 1/2" or 9/16" would be a more common size. Here is a simple way to measure the diameter of the shaft if you don't have a caliper or micrometer. Use an open end wrench to slide over the shaft. If a 1/2" wrench fits over the shaft with little slop, it's a 1/2" shaft. So on & so forth till you find the correct size wrench to fit over the shaft and find the correct shaft size. Edited May 11, 2021 by Achto 2 Share this post Link to post Share on other sites
bo dawg 516 #9 Posted May 11, 2021 4 hours ago, Achto said: 1/2" or 9/16" would be a more common size. Here is a simple way to measure the diameter of the shaft if you don't have a caliper or micrometer. Use an open end wrench to slide over the shaft. If a 1/2" wrench fits over the shaft with little slop, it's a 1/2" shaft. So on & so forth till you find the correct size wrench to fit over the shaft and find the correct shaft size. My mistake on the shaft size, I did mean 9/16" , sorry! I did eyeball the size with a tape measure carefully. I didnt have any calipers. Eyeballed with tape on the pulley bore too at 5/8" 1 Share this post Link to post Share on other sites
bo dawg 516 #10 Posted May 11, 2021 4 hours ago, Achto said: 7/16" bore seems to be a bit of an odd ball size. If it were me, I would find a pulley with the correct o.d. and a 3/8" bore. Then I would drill the bore out to 7/16" and have the key way re-broached. I realize not everyone has this capability though. A machine shop could do this for you but I fear the price would be much more than the pulley. I did a quick search on 7/16" bore pulleys and came up dry. Im sorry I did mean to type 9/16" Share this post Link to post Share on other sites
Achto 27,511 #11 Posted May 11, 2021 (edited) 8 hours ago, bo dawg said: Im sorry I did mean to type 9/16" Again 9/16" bore is not a real common size. If you have a welder, you can put a pulley together at a fairly low cost. They offer a weld on hub in a V or W series. You could purchase a pulley of the correct o.d. in a V or W series, and weld the pulley to the hub. Here is a link to one place that sells hubs. https://www.surpluscenter.com/Brands/Concentric-International/9-16-Bore-Series-W-Weld-On-Roller-Chain-Sprocket-Hub-W9-16B-1-2342-B.axd Here is an example of the pulley, this pulley would require a W series hub. https://farmerbobsparts.com/4-od-pressed-steel-w-series-weld-a-pulley/ A little web surfing may find you better prices. Tractor Supply also offers these weld together hub and pulley or sprockets. Edited May 11, 2021 by Achto 1 1 Share this post Link to post Share on other sites
bo dawg 516 #12 Posted May 11, 2021 Does anyone have the specs of the correct pulley that Ark would have used? I would rather go off that spec than the one I have since it’s not the correct one. Mine measures to be 4 1/8” od. But then the belt sits down in it a bit too so not sure about any of it. Share this post Link to post Share on other sites
bo dawg 516 #14 Posted May 13, 2021 On 5/10/2021 at 4:17 PM, bo dawg said: Would this be the correct pully for this Cessna pump? Shaft on pump is like 7/16” but the pully is 5/8”. Fits sloppy. Plus key way is different size on pully than pump. I meant to type shaft size is 9/16" (not 7/16) Share this post Link to post Share on other sites
oliver2-44 9,708 #15 Posted May 13, 2021 If your existing pulley has a 5/8” inside bore and the shaft is 9/16” outside dia.use one of these shaft sleeves https://www.ebay.com/itm/332828096881 1 Share this post Link to post Share on other sites
