The sander is a western 1998. It is painted on the inside sides and where there chain belt is the paint is worn off but i oil that up. I do have the load covered. The sand only freezes. The sand and salt does not freeze but gets stuck. Where the sand comes out you can look in there and the sand would be about 6" from bottom.
I used to have that problem with my spreader,my sand/salt pile got wet and it would bridge across and i d have toget out and stick the shovel in there and it would go down.Now i have my sand inside and im using treated(magic)salt,this seams to help,it only happened once this year,and it was because i filled the hopper and didnt spread for 10 hrs,while plowing.try to keep your sand dry,and dont pack it tight with the bucket trying to get more in,i was guilty of that too.
I've been using a similar spreader for a few years and have yet to have a problem, heres what i do. After every storm make sure it is completely empty, then spray all inside (while the conveyor is running) with fuel oil. Also, try to concentrate on spraying a lot of fuel oil on the chain to aid in lubrication. After that, tarp it real good and guarantee it will work fine next storm.
I had a sander at my last job, what we did....
1. Cover sand/salt pile if its outside.
2. I used old motor oil to lube the inside of the unit after each event. Wash it out, then soak it in oil.
3. Keep sander covered, make sure it stays corvered, we found that sometimes as you drive around the tarp would fly up a little on the front edge and fill up with snow.
4. Keep a pry bar(or similar tool with you) in the bed. All the driving and bouncing around will naturally compact the sand and make it that much harder to move.
Thats all I've got...and every now and then it would still clog. I used to use a 4' tree stake to loosten it up. Thats a lot lighter than a steel bar, especially after 14 hrs. in the truck
also if you have the inverted v in the hopper, raise it up. Sometimes it is to low, and it causes the briding right above the spreader chain.If sand does freeze, place a torpedo heater right inside the hoppe, or on the screen, and deflect the heat down in some manner.
We had problems with our V-Box spreaders, apperently Fisher put this seperator in the middle of the sander and the sand would not move from middle. So after contacting some owners of these they suggested we take the factory seperator out and our problem is fixed!! If its getting stuck do to cold try a tarp or find a garage to try too heat it up also you could buy an exhaust hose, put hose on exhaust and up to sander with a heavy duty tarp the heat of the exhaust will help warm it up.