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Polaris Big Boss A-arm update out from Polaris

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  • mod elan
    replied
    I installed all 4 kits at 11 miles last July on a new one. Itís used as a tool so I wasnít about to have one break in the field by myself. Turned 800 miles last week and no problems yet. I looked at the kit contents and you only need to get the bushings and pivot tubes to do the upgrade if the bolts arenít broken yet. No need to get bolts, washers, and nuts as they are all the same. Unless you are worried the bolts have already been stressed. The below quantities are for one a-arm.

    (1) 5137562 Pivot Tube
    (2) 5436973 Bushing
    Bolt part number in case you want a new one: 7519065

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  • Hunt'N'Photos
    replied
    Any updates to this? Has anyone with the Hatchers pass fix broken a bolt since then? I just picked up a barely used 2014 Big Boss with 277 miles that was super clean. And wouldnt you know it, when I was looking it over the bolt was broke on the middle left axle and the owner didnt know it.... I am going to look into this fix if it is working for everyone else...

    Leave a comment:


  • bigsub
    replied
    Originally posted by akrider View Post
    Just wondering if everybody who has experienced broken bolts checked them before the first time you rode it. I did, all of them were loose. One I could turn with my fingers. I found a torque spec list(can't find it now) on line and torqued all of the bolts to those specs. I have 350 miles and have not broke a bolt. It sounds like I am riding mine the same way as everybody else. Just a thought...


    Sent when I should be doing my chores.
    I check mine every time I load it on the trailer. Neither time I experienced broken bolts were they loose.

    Here is the latest information I got from Big Lake Power-sports: They surmise that when the center axle is flexed (stuffed) to it's fullest extent, it raises the rear axle off the ground (full droop). This puts massive stress on the lower A-arm bolt. I am not sure about this hypothesis, but it makes a guy think.

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  • akrider
    replied
    Just wondering if everybody who has experienced broken bolts checked them before the first time you rode it. I did, all of them were loose. One I could turn with my fingers. I found a torque spec list(can't find it now) on line and torqued all of the bolts to those specs. I have 350 miles and have not broke a bolt. It sounds like I am riding mine the same way as everybody else. Just a thought...


    Sent when I should be doing my chores.

    Leave a comment:


  • moosehunter83
    replied
    Not sure which brace you are referring to, but the one I'm talking about ties both sides (left and right of machine) together. I just think this has something to do with it. Hoping to put a few more miles on to see if the fix kit from Hatchers Pass is the answer before I try something else.

    Leave a comment:


  • northway
    replied
    Originally posted by moosehunter83 View Post
    I broke yet another bolt on my big boss. This is my fourth one. I had just installed the "fix kit" from Hatchers Pass on the center set because i had never had a problem with the rear ones and wouldn't ya know it, I broke a rear one. First time this has happened to me. Luckily I heard it break and was able to do a easy trail side fix. I'm also wondering about the brace that ties the two sides together. Especially since the one I broke on the rear set was at the head of the bolt and not on the nut side like the middle ones have been. I wouldn't mind taking the brace off and trying in out but not sure what all it would effect. Any thoughts?
    If that is the brace that the bolt goes through make sure your bolt goes through it! I had one that wasn't and the bracket that the bolt goes through tore and bent down. So limping back out with a rachet strap keeping pressure off the tire and then 2 hours of bending, welding, etc. it is now fixed a hell of a lot better than factory. But lining that bracket up after something bends is not fun. Almost mind boggling that the engineers came up with that design.....

    Leave a comment:


  • moosehunter83
    replied
    I broke yet another bolt on my big boss. This is my fourth one. I had just installed the "fix kit" from Hatchers Pass on the center set because i had never had a problem with the rear ones and wouldn't ya know it, I broke a rear one. First time this has happened to me. Luckily I heard it break and was able to do a easy trail side fix. I'm also wondering about the brace that ties the two sides together. Especially since the one I broke on the rear set was at the head of the bolt and not on the nut side like the middle ones have been. I wouldn't mind taking the brace off and trying in out but not sure what all it would effect. Any thoughts?

    Leave a comment:


  • bigsub
    replied
    I just had a thought (imagine that!). Could the so-called dog bone brace that ties the two sides together be the stresser? I feel A LOT of flex in the frame (seat) when going over hummocks and rocks. The two bolts I have broken were sheared on the threaded end which would be weaker than the head end. Is the flexing frame creating this problem or is it the stress of the susspension going over rocks? I was looking at my 6x with the bed up sitting next to my 500HO and remembered being told that the front suspension on these two are the same. I then started questioning how many rear A arm bolts have been broken on the 4 wheelers. None that I have read about. I think I may be on to something. What do all of you think? Is the flexing frame doing this? Can we beef it up or would simply removing the dog bone brace eliminate the issue? hmmmmm.

    Leave a comment:


  • AlaskanSD
    replied
    I'm needing to swing by as well for a preemptive replacement. I'm getting mixed messages as to weather it's a Hatcher's fix or a genuine Polaris fix. Hatchers claims it's a Polaris part, but non of the other Polaris deals seem to know about it.

    Leave a comment:


  • moosehunter83
    replied
    Anyone tried the update from Hatchers Pass? Any problems with the new set up breaking? Just picked them up and getting ready to put them on the Big Boss tonight.

    Leave a comment:


  • cwoods
    replied
    I too am loaded and ready for another week to go by!
    The friend who made my bolts said he indeed had some fellow miners he knew who broke a few of the rears as well as the braces that tie each side together (what I call dog bone braces) which is why I did what I did on all 4 rears plus having the braces re-cut in much stronger steel. I would be checking rears regularly as well if I was still with the stock setup.
    I'm hearing from fellow workers here on the Slope that this bolt upgrade from Hatcher Pass has nothing at all to do with Polaris but is something they themselves came up with and sourced out to have made and try, anyone else confirm that? Regardless I hope it helps.
    As far as the load carried out...imo it should perform to the payload suggested by Polaris without this issue. I'm just glad I went through what I did on mine, I don't like those kinds of surprises and even though everything has the potential to fail I feel confident with that bull in the bed.

    Leave a comment:


  • BTK
    replied
    Time to load the big boss for next week. I did a quick check of all the bolts. Front right was loose like usual--I haven't added any locktight; the rear left arm bolt was missing the head. Grabbed a spare and a washer and replaced in about ten minutes which included removing the old nut for re-use. I don't think I've ever broken a rear. Thankfully nothing was bent. I don't usually check that side but will now. Question: Is it easier on the machine to make two trips over tussocks with half a moose, or make one trip with a whole moose? I did two trips but now I wonder. ps--I've no idea how to make paragraphs on here

    Leave a comment:


  • Riverben
    replied
    Cwoods,I figured it out thanks for the info,,,as far as the a arm situation there is not enough grease in there from the factory for my liking,,I'm going to give them all a darn good greasing,I think that will help a lot

    Leave a comment:


  • Riverben
    replied
    Cwoods ,not sure how to check a pm,not to computer savvy

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  • cwoods
    replied
    Sent ya a pm Riverben

    Leave a comment:

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