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#1
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1812 driveshaft questions
my 1812 has been shearing coiled spring pins , I dug into it today. was going to replace the front flange and bearing and also the rear centering bearing. took it apart and found the the input shaft on the hydro is egg shaped causing my issues. can you repair the input shaft or what can I do to fix the spring pin issues?
thanks in advance Rob |
#2
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I had my 1572 have the same condition with the hydro shaft becoming egg-shaped. It really did not really show up until I was randomly loosing sealing ability of the front seal and loosing hytran. As I was digging into it, I found the bronze self centering bearing at the pump end of the driveshaft was worn out and was allowing the disconnect clutch to rotate in an off-center out of balance condition. I believe this is what led to the problem with the hydro pump shaft becoming egg-shaped.
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1989 - Cub Cadet 1772 1987 - Cub Cadet 1572 w/Rear PTO & Cat. 0 38" Lawn Sweeper #196483 42" L42 (Bush Hog) Rotary Cutter # 190349 45" 2-Stage Snowblower # 196364 48" Haban Rotortiller Rear PTO Driven #190356 54" SnowBlade with hydraulic Angle #196376 60" Haban Mowing Deck #196374 |
#3
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Rob
If the input shaft is worn the best thing to do is to replace the shaft. BIG $$$$$. I had one years ago that was worn, what I did was drilled the coupler or arm as they call it 90 degrees from the pin hole and tapped it for set screws to hold it from moving. I also used some Devcon plastic metal. I was working a couple years later when I sold the tractor. Never did like that design with only a pin. Good luck.
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2264 with 54 GT deck 1641 AKA Black Jack with a 402-E Haban Sickle bar mower JD317 dump truck BX2670 with FEL |
#4
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Frank, I think Rob is talking about the shaft being egg shaped where the coupler fits over it. The 1811 only has a round shaft with a 1/4" pin through it unlike the splines on the Supers and Cyclops series.
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2264 with 54 GT deck 1641 AKA Black Jack with a 402-E Haban Sickle bar mower JD317 dump truck BX2670 with FEL |
#5
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Quote:
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#6
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Jon we are on the same page. Egg shaped shaft. What I suggested is a stop gap fix. As you mentioned the proper thing to do is replace the pump or the shaft. The used pump is less expensive.
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2264 with 54 GT deck 1641 AKA Black Jack with a 402-E Haban Sickle bar mower JD317 dump truck BX2670 with FEL |
#7
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could I drill out the cast piece to equal the input shaft? or less trouble swaping hydro"s. I have an extra one on the shelf.
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#8
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Less metal for the pin to turn the shaft with a larger hole. I wouldn't.
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#9
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You cannot repair it. Not cost-effectively anyway. Your best most economical route is to replace the hydro with a good used unit. They usually sell for around $125.
It is caused by driveshaft misalignment either because it is bent, or because the centering bearing went out. The off-center load causes the shaft to wear a flat spot on it because that is where the most pressure is on the shaft. I'm not sure if that makes any sense.... but it's the best description I can do at the moment. |
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