I have a customer with a cushion tire lift that needs a 19x8x15 tire. The truck calls for 21 x715. Due to roof height it will not clear. Any ideals?
Showing items 1 - 20 of 22 results.
In this mans case I will have to agree. My company has decided to not change his tires except to approved options only. I just have to deal with the fact that you can not help everyone in this industry. Sometimes the criteria offers no acceptable solution.
I see installing a worn tire as the libility. 10% wear on a solid tire is the limit. Camoplast has documentation stating acceptable wear limits.
Installing used tires is a credible option as long the customer knows the risks involved IMHO. In todays economic enviroment, companies are looking at saving every last dime if they can. Modifying the mast & OHG are not an option ( to much liability), but tires do wear & installing used tires that are worn to accomplish some specific need is viable option. Of course this is all good because I say so-LOL.
Perhaps buying a brake drum assy w/the worn tire attatched could be option. I had to do this once when the odd tire size I needed was backordered. Atlanta lift wouldn't sell just the tires, I had to buy the brake drums & they left the tires bolted on- Just a thought.
The forklift brings to mind a few situation comedies I have seen on TV down through the years where a piece of furniture or sculpture was bought, only to find out it will not fit through any door on the house.
Mast and overhead guard is too tall. Lights are mounted flat on ceiling. The customer really needs a smaller truck and either a paved drive or separate truck. What he will do is a horse of another color.
on the repressing of tires
swoop223 is correct
even though you can technically do it, they will not stay on the hub. Back when cat had their own tirepress guy we tried it many times only to have it fail because the tires would start comming off the hub over time. Once the pressring on the tire has been expanded after the initial press it looses its holding integrity. We tried several methods of countering this effect by applying welds to the pressring on the old tire and anything else we could think of to reuse them but in the longrun they just would not stay on the hub, in some cases we even had the pressring on the tire break after repressing. Its a bad idea overall and imo a total waste of customers time and money.
Now bbforks idea of just welding the tire onto the hub at the seam outside the edge of the tire may work but that even requires more time grinding it down if you ever have to replace the tires, the heat from the welding affects the tire bonding on the outside of the tire and can cause premature bond separation, it imo is just another 'backyard' fix that could be avoided if the job is 'done right the first time'.
What you spend on trying to rig the old tires to work or even taking new tires and grinding them down you could invest in doing the 'right job' and just fix the OHG or the clearance issue in the door.
Like i said, i've been down this road before and its just not worth the risk. Saving the customer money? Not really.
osha Standard Number: 1910.178(a)(4)
i don't quite know how to respond to you except to repeat myself. liability is the reason for pulling in a third party. if you don't feel comfortable then that is up to you, depending on the guard in question it can be a very simple thing or a complex one either way it can be done legally and without the manufacturer involved and without the middle man being held liable.
Yes they are modified all the time but just because they are does not make it right and safe. If the manufacturer is out of business then I would not want to make any modification but purchase the correct truck or equipment for the application. I would not want to have a second party document the modifications what happens if they go out of business? It is all about liability and do you really want to put yourself in that position? One issue like this and you suddenly no longer have a business. Some times it is better to walk away from a situation and maybe loose a small customer like this than loose everything your or your employer has worked for.
things are modified all the time, what happens if the manufacturer has gone out of business? or a cab needs to be installed? a qualified engineering company can provide legal documentation deeming the modification safe, only the one they did of course. maybe your laws are different it is pretty strict here though.
BB,
I would not reccomend welding tires to the hub. One issue is the next person that changes tires and is not aware of it could result in disasterous results. Two welding creates heat which is not good for the bonding of the tire especially if they are poly.
Stam,
You need to clarify your statement. You never want to modify or "chop" something like the over head guard without authorization from the factory and then assuming they ok some thing like that it needs to be done by a factory authorized/certified person.
I agree that pressing old tires is a risk, but you can weld the band to the hub. I work on older units where even new tires walk off the hubs. Welding on the outside edge (so you can see if the weld ever needs addressing) has worked many times for me- haven't had a issue yet.
What make/model of lift are you working on?
7777,
I basically agree with your comments most of the time they will work but on occassions you will get a spinner- it all depends on how the wheel OD was formed to the lowside or high side of the manufacturing tolerance & the same with the tire steel band. A fat band & a wheel to the skinny side will greatly increase the chance of a spinner & general that doesn't show up until you have paid for a pressing charge & the check has cleared the bank. Also temperature can have an effect, cold temps will slightly shrink (OD get smaller & ID's larger metal. Like cold soaking metal object that was put togetehr with an interfernce fit in ice or dry ice to make it come apart (like bearings on a shaft. It is a matter of risk.
you can "chop" your ohg. if liability is a concern have an engineer do the work for you and accept liability.
You might be able to purchase new tires and have them ground down, and yes used tires will do fine w/ pressing.
If they don't want to mess with the door header - is it possible to skim off an inch or two at the thresholds & raise the light fixtures or replace with a shorter profile (height wise) light -second hand if you or they can find them to save the wallet. Used to sell rough terrain poultry units in East Texas area working with Bright Coop to the chicken growers & they did that all the time - of course, dirt is easier to move than - concrete & asphalt. My son is a commerical elctrician and many of his comany's customers are updating lights & the throw the old ones away,of course teh guys doing the job are alwasy looking for "a little side" money - check with some of the larger electrical contractors around your area.
Hey free advise is just that - maybe you can use it or maybe you will do a control-alt-delete - not an issue here.
The other idea but it is expensive Whe na I worked for Komatus - the provide 3.5" undercleance under the mast and times the lowered height would become an issue. Lift Tec 9supplier of all masts to Komatsu when hey were in Covington, GA)would builda "special" mast w/ 3" under clearance (the normal industry std.) to resolve lift height & lowered height issues - this was done by lowering teh tilt & axle mounts 1/2". But this had to be done on new production masts - no field modifications & Komatsu had to approve the changes to make certain other areas were not affect - like pinch points at mast cross ties, etc. (It is easy to spend other people money - eh?) but this free too!
mrfixit
you cant 'repress' used tires
they will not stay on the hub
once pressed they expand and loose thier 'holding' capability
my suggestion is to put the correct tires on the lift
if any alterations should be made it should be to re-size their door height to allow for clearance (sounds like they didn't spec out the truck well enough before buying it?) I'll guess they bought it for a real deal at some auction? Well saving money is good but sometimes it comes with other costs in the long run for things unforeseen like this.
and of course there is also the option to cut the OHG down but that also has it's costs and you have to get approval from the mfg to do so.
the main thing is to remember that altering a truck away from it's original design is not good, creates all sorts of problems with the truck and possibly for the customer should anything happen because of the changes they make 'out of spec'.....
i wouldn't want to be the one responsible for any accidents because of this and I'm sure you wouldn't either. insurance claims and lawsuits can bankrupt companies, I'm sure they are aware of this :o)
also if this is a cushion tire truck and not pneumatic then they shouldn't be driving it on gravel in the first place, its not designed to do this, that is why they get stuck...
a paved driveway or something is yet another cost they will eventually forego to eliminate the 'getting stuck' scenario. (that is when they get tired of towing the truck out of stuck situations)
imo altering the door to the building would probably be the best way to go and the cheapest since you probably wont find any odd sized tires to fit the needs your looking for.
The place I buy tires has plenty of used 21" tires that measure 18-19" that were taken off and replaced.
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