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| Primary gear http://www.ducatittandf1.com/viewtopic.php?f=24&t=11313 |
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| Author: | Geoff [ Thu Feb 25, 2016 4:40 pm ] |
| Post subject: | Primary gear |
I'm having a hard time getting the primary gear off of my crankshaft. I'm using a small 2-jaw puller and it just doesn't want to budge. Is there something I'm missing? |
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| Author: | marcotoys [ Thu Feb 25, 2016 5:56 pm ] |
| Post subject: | Re: Primary gear |
You could try this : Put the most tension you can by turning your puller's large bolt. Then hit the puller large bolt with a hammer. It usually works for me. |
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| Author: | huit [ Thu Feb 25, 2016 8:53 pm ] |
| Post subject: | Re: Primary gear |
Beg,borrow a proper Ducati primary gear puller. Worth the investment. Good luck Paul |
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| Author: | 618F1 [ Thu Feb 25, 2016 9:04 pm ] |
| Post subject: | Re: Primary gear |
Come to the house and borrow my puller Geoff. MikeV Like huit said. |
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| Author: | Palmer [ Fri Feb 26, 2016 3:28 pm ] |
| Post subject: | Re: Primary gear |
Heat will also help, though sometimes a propane isn't enough and I have to get the oxy-acetylene out. Palmer |
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| Author: | Geoff [ Fri Feb 26, 2016 6:39 pm ] |
| Post subject: | Re: Primary gear |
Thanks for the insight. I tried propane with no luck. I'll try the MAPP gas and see if that gets it. |
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| Author: | wdietz186 [ Sat Feb 27, 2016 11:20 am ] |
| Post subject: | Re: Primary gear |
I use a heavy brass punch and a heavier hammer on the gear when it is under as much tension as I dare. I try to smack it just above the keyway area[no science here, it just worked getting off a stubborn one once]. The idea is to just get it to vibrate a touch so it releases its grip on the taper. Be prepared though, it comes off with a startling BANG! |
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| Author: | pat slinn [ Sun Feb 28, 2016 5:42 pm ] |
| Post subject: | Re: Primary gear |
I am have the exact same problem at this very moment trying to remove a primary gear. It is the hardest one I have come across in over 30 odd years. My friend has a hydraulic gear extractor, I have never used one before, has anyone else ? |
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| Author: | Geoff [ Mon Feb 29, 2016 1:20 pm ] |
| Post subject: | Re: Primary gear |
Hydraulics would be wonderful and I've got plenty of high force tools here in my shop at work. The big problem is getting behind the gear. A 3-jaw puller is putting all the force on the gear teeth which doesn't seem ideal with the risk of breaking a tooth. And getting a split plate puller behind there looks difficult with the lack of clearance to the crank case. I wish they had drilled and tapped a couple holes in the gear. |
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| Author: | Wolf [ Tue Mar 01, 2016 2:57 am ] |
| Post subject: | Re: Primary gear |
I have faced the same experience - on one motor it came off more or less easily - the recent attempt on another motor it was like welded on the crank shaft...I would strongly advise to use the factory tool - it saves a lot of nerves and also time. It is also a good ideas to retain the nut on the crank, otherwise it is possible the primary will be found in the opposite corner of the workshop... Good luck! Wolf |
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