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Just bought Max IV now keep me from burning it lol

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  • Just bought Max IV now keep me from burning it lol

    I got my well used but new to me Max home Thursday and then had to try it out yesterday with no plugs stupid idea I know I drove around the yard and up and down some hills and it seemed pretty good figured out how to shift the T20 pretty easy so I decided to take it through the edge of my pond knowing there were no plugs and I thought oh no big deal just going across 8 or 10 feet of water and everything would have probably been fine but previous owner was a more motivated seller because it only had 14 minutes worth of gas in the tank and I was at 14:30 when I hit the water so 3-4 feet into the water it sputters and cuts off I knew what had happened sure enough I check the fuel filter and no gas so by the time I find a empty gas can go 3 miles to the store and 3 miles back it has filled about 3 inches of water in the tub glad it wasn't deep or so I thought I get it fired back up but it is slinging water around in the tub on belt and its slipping so I go get rhino pull it up the bank drain the water out and after everything dries out I crank it up drive up to shed it seems fine pour some burnt motor oil over chains it seems fine runs drives shifts great

    Second full day of AATV ownership go to Napa get two 3/4 freeze plug that are like a rubber plug with a bolt through them that makes the rubber swell up in hole they work excellent if any body needs to get some plugs quick fix two newly flat tires drive machine around the yard it seems fine so I figure round two for the pond my Dad shows up at this point so me him and my three year old head off into the green scum infested waters and as soon as the rear tires drop off a little mud shelf we almost turn bottom upwards in the water and take water on over the low side of the tub the two adults where in the front seat and the three year old in the back these thing look much more stable on youtube we get turned around get back to the bank its a gradual slope into the water it is slippery mud but I mean thats what these things are made for right? It drags us out of the pond losing their sense of adventure they get out I drain the water out it honestly wasn't much a try it again with one person in the dead middle it seems pretty good drive around and try to climb up a steeper bank upon my first attempt it will not make it I then realize that with all wheels freely spinning in the water that the trans is stuck in fwd even with the sticks all the way back or half way or full forward it hasn't came out of reverse yet? I get it turned back into the water turn around and get a better line at the steep place and climb it impressing all the on lookers but on the bank after removing the floor boards still can't figure out the transmission not shifting I take the linkage loose and make sure its pushing both sides equally at once and it appears it is I try some fairly gentle taps from a hammer still no dice I am gonna try one side at a time tomorrow later after word has spread through out the community of the 6x6 exploits a friend of mine shows up and its round 3 of pond driving everything is going well and with two adults it seems stable this time but when we get to the gently sloping bank and try to crawl out it just spins and gets stuck in shallow water and mud that my rhino could probably get through with some throttle after getting out and pushing it to the mowed grass it finally hooks up but then doesn't have enough power to pull itself up or spin the tires without stalling out 3 or 4 times its not steep at all I mow right up to the water with my freaking ride on lawn mower I don't think my previous climb would be possible now with whatever is going on is there something in the transmission to cause this problem I checked the clutch and it seems to be working correctly once pulled back to driveway it drives fine in fwd but still won't shift into reverse

    Previous owner swapped a Honda 18hp motor in but used original clutch belt looks ok and in line the clutch looks good seems to be working right I don't know I wondered if larger tires would help with the stability in the water and in the mud because it has the little rawhides 21/11/9 if i remember correctly but with it stalling out like it needs more power I don't know that it could handle bigger tires actually thought it would be handy to have the small tires on and just add tracks but I don't know if it could handle turning tracks at this point the Honda seems strong and I originally thought was just as good or better than a 18 briggs but I don't know what to think now any ideas or advice would be appreciated

  • #2
    I think you may just need some more time with the machine. It takes a few times entering and exiting the water to get the hang of it. You will learn the best lines to take based on the capabilities of your 6x6. Larger tires will definitely help keep you from getting stuck as easily and the 18HP motor should have enough power to turn 25" or 26" tires without much trouble. A larger motor would be preferred, of course, but there are a lot of guys with 18HP Briggs motors running 26" tires on their Max IV without any issues.

    For your shifting problems, your shift linkage going to the diamond shifters on the T20 transmission is probably at a bad angle. If it is bent a little, it can push or pull against the T20 diamond shifters instead of moving them. Look under the engine stand on top of the transmission and see if anything looks like it is binding there.

    Overall, I would recommend going in the water by yourself for several times. Enter slowly, enter quickly, enter straight, at an angle, etc. Once you are in the water, shift from one side of the Max to the other. Rock the machine to get a feel for the stability. Once you learn how the machine reacts in the water, it won't have as much of an uneasy feeling to it.

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    • #3
      hi,
      There are some water areas and swamp areas I do not go also . Yes I have had trouble on sand that does not compact and then get bogged typically [ large particle river sand ] when exiting .Swamp mud ,very very sticky mud that stops the wheels turning and packs tight in between the wheels also .
      U will learn by doing but have some tow ropes ha ha
      Have fun
      tomo

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      • #4
        Shifting a t-20, because it is not synchronized, takes a little getting used to. There is an action many people refer to as "the dance" that helps. Try rocking the machine by shifting your weight while moving the lateral sticks while giving just a touch of throttle and then back to idle. Does that seem like you need to be unusually coordinated? There are 2 ways to make it easier: Install springs on the shift assy at the diamond shifters, commonly known as the easy shift kit. Or my preferred way, Split the shifter so you are only trying to engage one side at a time. OR.....a combination of both[IMG][/IMG]



        Your lack of low end power (climbing the bank with extra people) is probably a belt adjustment issue. First check that at rest the belt is all the way to the top of the secondary clutch (on the trans). It should be level with the top or stick up slightly above. After that, look at the tension. You may need more shims under the engine. And as always check the clutch alignment.[IMG][/IMG]

        Here is some good info. ATV and Snowmobile Belts - by Dayco

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        • #5
          Thanks for the replys everybody I am gonna go out and check the diamond shifters right now

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          • #6
            Ok I got the back seat and the battery out of the way took the linkages off both side of transmission and put them back one at a time the left side shifts fine the right had a little bow in the bar under the engine stand and will not shift it move slightly freely both ways but not enough to move anything internally is there a shift fork or something in there that may be stuck?

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            • #7
              Are the pins on the shift perfectly rounded or are there flat spots?
              Did you take pictures?
              The trouble with retirement is.... I never get a day off !!!!

              sigpic

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              • #8
                You need to take the diamond out and look at the pin on the bottom. Pull the o-ring off the main part and hit it with a brass wire brush to clean it up a bit if it looks junky. I have had machines that would not shift at all on one side, done that, put the o-ring back on, and lubed it up and reinstalled it, and it worked like new. There is a chance that the pin is bad as well. Like plumcrazy indicated, check to make sure you don't have a flat spot on the pin as well.
                l like to buy stuff and no I don't do payments!

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                • #9
                  Originally posted by amphibious drew View Post
                  You need to take the diamond out and look at the pin on the bottom. Pull the o-ring off the main part and hit it with a brass wire brush to clean it up a bit if it looks junky. I have had machines that would not shift at all on one side, done that, put the o-ring back on, and lubed it up and reinstalled it, and it worked like new. There is a chance that the pin is bad as well. Like plumcrazy indicated, check to make sure you don't have a flat spot on the pin as well.
                  Yep ... what Drew said!
                  At Busco last April, my T20 wouldn't shift into reverse out on the trail, someone handed me a can of WD40 to spray the shifters , Damn if they didn't start shifting like new again. I had a lot of mud and water splashing in the tub and may have got some dirt or something under that diamond.
                  I had ZERO problems before then, or since, but I now spray those shifters every time I head out with WD40.
                  The trouble with retirement is.... I never get a day off !!!!

                  sigpic

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                  • #10
                    thanks for the advice I will try that tomorrow will I haft to remove the engine and stand to get the shafts out of the tranny?

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                    • #11
                      Originally posted by 79ford View Post
                      thanks for the advice I will try that tomorrow will I haft to remove the engine and stand to get the shafts out of the tranny?
                      Yep, makes life a LOT easier.
                      The trouble with retirement is.... I never get a day off !!!!

                      sigpic

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