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  #1  
Old 04-29-2015, 10:14 AM
ArkCadet ArkCadet is offline
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Default GT2550 deck issue

Hello everyone! First post here. Looks like a place I'll enjoy.

I have a GT2550 that I inherited from the previous owner of the house we just bought in early December. Anyway, it has a 50" 3 blade deck and their is a Torsion Spring (Part# 732-3067) on the pulley that engages the belt to turn the blades. It have used the mower 2 times and the spring has broken 2 times. The previous owner told me that part breaks from time to time. There has to be a reason for that and I want to figure out why. I can't determine what is causing this and I'm not one of those that says "oh well, I guess it breaks a lot." ha Anyway, in looking at the parts manual I have and anything I can find online, it shows this below(#17 and its orientation with #5 and #27 and what is causing the breaking is what I'm trying to figure out)...



So looking at that above, it almost look like the loop end of the spring does NOT go on the little peg that sticks up on part 27. However it seems like it would since the loop and peg are a perfect fit...and since there is no other reason for that peg to be there. The last two times, the non-loop end of the spring has been put into the hole on the pulley arm, and then the loop over the peg at the base. But, the spring has broken right at the 90 degree angle at the top of the spring both times after mowing a few hours.

Last night, I put it on just as it shows in the parts diagram above (with the loop end NOT on the peg, but to the right of it), but it just does not seem like enough tension on the arm at all.....and from my understanding, there is always tension on the belt, just more added to engage the blades?? I just don't know.



So, with all of you expoerts on here, do you know what my problem is??? THANKS!!!!

Here are some other pictures that may or may not help.



Here is the new spring in place as mentioned above and the old spring that broke. Again, the broken spring was brand new and I put it on with the loop end on the peg about a month ago. First time out and it broke after mowing for a couple hours.



I guess the good thing about this is I have become an expert in a short amount of time on removing the deck. HA

Thanks again everyone!!
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  #2  
Old 04-29-2015, 10:25 AM
64fleetside 64fleetside is offline
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Welcome to the forum, I am near Little Rock. Belt should be tight.
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Old 04-29-2015, 10:26 AM
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Sam Mac Sam Mac is offline
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Any chance the belt is a bit too short causing excessive tension on the spring ?
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Old 04-29-2015, 10:26 AM
ArkCadet ArkCadet is offline
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Quote:
Originally Posted by 64fleetside View Post
Welcome to the forum, I am near Little Rock. Belt should be tight.
Thanks! So I assume that means torsion spring loop end should go over peg on base? And I am as well. I live in Alexander.
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Old 04-29-2015, 10:29 AM
64fleetside 64fleetside is offline
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I am near Cabot, up north of you. Looks like you could hook an extension spring on there fairly easily, might be more durable, might use both.
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Old 04-29-2015, 11:23 AM
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jimbob200521 jimbob200521 is offline
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That loop should definitely be over the peg.

Just out of curiosity, what RPM are you engaging the deck at?
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Old 04-29-2015, 11:36 AM
ArkCadet ArkCadet is offline
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Quote:
Originally Posted by jimbob200521 View Post
That loop should definitely be over the peg.

Just out of curiosity, what RPM are you engaging the deck at?
Hm. Good question. Not sure. Should I idle it down before engaging? Also, not sure it matters, but the spring breaking never occurs when engaging or disengaging. Its always while mowing for a while. Thanks for the reply!
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Old 04-29-2015, 12:07 PM
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jimbob200521 jimbob200521 is offline
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Quote:
Originally Posted by ArkCadet View Post
Hm. Good question. Not sure. Should I idle it down before engaging? Also, not sure it matters, but the spring breaking never occurs when engaging or disengaging. Its always while mowing for a while. Thanks for the reply!
Just a good habit to engage your PTO based equipment at a lower RPM. The higher the RPM the harder it is on your equipment.
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Old 04-29-2015, 12:40 PM
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sbauerz28 sbauerz28 is offline
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Maybe you have a bent pulley or a pulley that's crushed slightly in one spot. This would cause the belt ride high in the pulley on said spot and in turn cause the idler pulley to "bounce". This would cause a lot of additional stress on the spring.
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Old 04-29-2015, 01:59 PM
ArkCadet ArkCadet is offline
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Quote:
Originally Posted by sbauerz28 View Post
Maybe you have a bent pulley or a pulley that's crushed slightly in one spot. This would cause the belt ride high in the pulley on said spot and in turn cause the idler pulley to "bounce". This would cause a lot of additional stress on the spring.
Thanks, I will check that tonight and see if I can spot anything.
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