OK I just acquired this lift and it would more useful to me if it had pneumatic tires. I need to know if its possible to convert a hyster S50XM to pneumatic tires. thanks.
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got the spindles put back in the truck with all new bearings and seals. new wheel bearings too. slapped the tires on. dang they're heavy. everything clears. no rubbing or interference anywhere. now why do you suppose someone put the wrong size tires on it. from my view point its anyone's guess. this truck has had a hard life. its a 1996 with 14k hours on it. and from the looks of it virtually no maintenance at all. runs good though and everything works with the exception of some of the lights. which I will address when I get that far. so far I have completely dis-mantled the mast, had it blasted and I repainted it. it's now re-assembled waiting for me to get the rest of the truck painted. the body work on the counter weight is going slowly. just because I love body work so much these days. it looked like it had been through several demo derby's when I got it. I'm not complaining though. I got this truck dirt cheap. when Im done I might have 2k in it. which I know is cheap based on what these things are selling for. It will be nice to have a forklift in my shop again.
the tires were pressed flush with the outside of the rim. at this point I cant put them back on to see if they clear everything underneath. I am waiting for parts to arrive so I can put the spindles back in. the spindle and wheel bearings were in desperate need of replacing. I found those problems when I took the wheels off to have them swapped. I will let you know when i get the wheels back on whether or not they clear as is. as for OSHA. I dont really need to worry about that. this is a forklift for home/business use but im the only one going to use it since Im the only employee so to speak. thanks for the input.
This is more of a sales question than a service issue. You must go by the capacity plate. The tires should be 6" wide. Because the tires are 5" wide that are on there you need to figure out whether they should be pressed on flush with the inside, outside or halfway.
The tires can be the weakest link on a forklift truck meaning that they cause the truck to derate from its base capacity. For example, if your were to order a typical new 5000# pneumatic tire forklift truck with a triple mast that lifts 189", a hang on side shifter a solid pneumatic tires the capacity plate would read about 4600# and it would state that the truck is equipped with solid pneumatic tires. Let's say once the tires wear out you decide to change them to pneumatic tires. Then you would be changing the capacity of the truck to something like 3500# and you would need to order a new capacity plate reflecting that the truck now has pneumatic tires.
Sounds crazy but it is true. One of the things OSHA goes after most is to verify that the capacity plate matches exactly how the truck is exactly equipped.
either would be fine, the truck (most likely) was sold as a "wide axle" and had added fenders sides also. as long as it "works for you" the added stability of the wider tire footprint will not hurt anything. if it was going to be much more than an inch, or was smaller, then you might have a problem.
ok guys. try this one on for size. I bought tires for this forklift. had them put on. got them home and realized the rear (steering) tires overhang the rim by an inch. immediately Im thinking I bought the wrong size. however the dash plaque clearly says 16x6x10.5 which is what I bought. turns out the tires that were on it were 16x5x10.5 so whats the deal there? which one is correct? the plaque or the size that was removed? Im inclined to think the dash plaque would be the last word here but maybe not. any ideas?
That Hamerzin application sounds like one waiting to happen!!! You might want to re-think your application Hammerzin!
Model & serial number would be helpful
Could be:
1. Tilt lock valve if it is equipped with one
2. The internal tilt cylinder piston packing/seals are worn
Note: what every works for you may not be good enough should an accident happen the mod is non compliant to OSHA law.
Ok don't get me wrong I am not recomending for anyone to try this just saying it works for me.
But I do have a coupl of problems If someone would please help me with. My tilt cylinders when I tilt them back the just go right back out won't hold I have replacced the o rings in the valv body but not sure where to look next?
Hammerzin, please don't encourage people to do what you did. Whether you are in a commercial setting or not, you still have life and limb to lose. There is a good reason pneumatic tired machines are dimensionally larger than their cushion-tired counterparts. There is also a good reason that specification plates exist. You may have gone five years without snapping a lift chain and shattering your skull lifting loads heavy enough to lift the back end of your forklift up, but it only has to happen once to end your life. Please stop abusing forklifts and work safe, you have loved ones who want to see you come home.
I wasn't planning on doing anything other than repainting it. repairing the few items that need it and possibly throw some new tires on it. and might I add the tires will be the same size and variety as the ones on it now. I do actually have a dock door but cant use it due to the pile of dirt in front of it. maybe this would be reason enough to get the pile moved. then trucks can just back up to the door and I don't have to drive out on the gravel. dang what a novel idea that is. yes I have a dock door. my building is not a garage like you might think. its 22,000 sq ft. and sits right behind my house. once upon a time it was the home of Sheda fur company. I was told it used to be the worlds largest fur dealer. kinda strange since the town I live in is all of 297 people. and I do wonder if that's counting the people in the grave yard too. I would post a pic of my progress but don't know how or even if you can post pics. thanks to all who have given advice and direction.
Craig;
Stick with your original thought and leave the truck alone. Any changes made would be very dangerous and unsafe. If someone came up with a safe idea on how to make the conversion AND it was approved by ALL forklift manufacturers they would become an instant multimillionaire.
Just a few comments -
1. The smallest tires/wheel you found may not be adequate to support the wheel loading when the unit is driven empty. Approximately 65 -70% of the GVW empty is on the steering tires. This is one reason why steering tires wear out at twice the rate as the front tires. The tires & wheels need to be sized accordingly. You will find that tire sizes front & rear will vary from one manufacturer to the other for units with the same basic capacity rating. This is primarily due to the axle ratings difference which will vary due to various factors such as wheel base, front over hang, mast weight, etc, etc. In other words - not all forklifts are alike.
2. Likewise, the driving tires are under most load when the truck has a load on the forks. Even though you state that you handle loads under 2k "most" of the time. This statement also implies that "occassionly" loads greater than 2K are also handle. The front tires need to sized to the max weight the unit is designed to handle. This kinda' like saying you go bass fishing using 4 lb. test line becaus most of the time you catch 1-2 lb fish. You know what happens when the occasional 10 lb lunker hits. Guess I wouldn't want to be the one of 2 authorized people to operate the lift (or other folks working/standing nearby) when that "lunker" hits.
The steering tire I did have a set of rims made and bought the smallest fork truck wheels I could find. I had to shim the rear weight out just a little and still was able to use the lower bolt. As far as the front goes, I did search for some small truck pneumatic tires and wheels, which is where I ran into a clearance problem hence the trailer wheels. I have used the truck on some heavy loads one that even hovered my steering wheels but most of my loads are under 2000 pounds and with that no problems. However I will say this myself and one other person here are the only one's how operate the truck and I would not recommend doing this in a commercial or industrial setting. It sounds like the guy who originally posted the question may be able to get by with something like this mod
If it works for you thats great. However I dont think I am going to go down that path. I have done my fair share of seat of the pants engineering but there is a line I won't cross. And this would be one of those lines. I would be more inclined to find some tires and rims from a different forklift and re-drill the bolt pattern to match my truck instead of trailer house wheels. at least that way I know they are made for the application I am using them for.
Now that is some shadetree engineeering for sure! Guess all is fine unless something happens & some one gets hurt or worse. Wouldn't want to attempt to defend this conversion.
Hey I converted an old clark to air I took two moblie home rims (open centers) Left my hard wheels on the lift welded them to the solid wheel rim mounted a 10 ply 14" tire on it and that was it been using it 5 yrs now
OK now those seem to be pretty good reasons to leave it as is. thanks.
there is not proper frame to ground clearances, and the truck would no longer be as stable both for lifting and turning.
that would be my driveway. as much as I would like it paved its a little cost prohibitive,. I dont take it outside that often but it would be nice if I could without fear of getting stuck. its not essential to take it outdoors. but would be nice on the rare occasion I need to unload a truck on the street. I thought it would be more cost effective to convert to pneumatic vs paving my driveway.
now can someone tell me why it cannot be converted to pneumatic? other that the mfg says no. which Im not one to adhere to what a mfg tells me without good reason behind it.
Have you thought about improving your yard condition? Ive had customers ask about converting to pneumatic tired trucks to keep from getting stuck in small yards and after my suggestions found it favorable pricewise to pave their yard so their cushion truck could drive outside.
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