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Old 11 February 2019, 09:01   #1
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How to replace roller split pins (easily)?

I am planning to remove the rollers to clean up and lubricate and then replace the rusted split pins. Might be a stupid question but can't find anything with the search.

What is the best way to put new split pins in given that they are recessed into the roller? Do you just bend the split pin before inserting? Would appreciate any tips as a few seconds saved per pin will add up!

Trailer is an indespension super roller coaster. Pic of area attached.
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Old 11 February 2019, 09:07   #2
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Old 11 February 2019, 09:22   #3
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I'm afraid without seeing them it's just soak in penetrating oil (a few hours or overnight) and grunt.. mole grips work well ...it does help if you get pins as straight as possible before you extract them.
Worse case is drilling them out but that isn't often nesssary if they snap during the process a punch the right size will soon sort it.
Just remember to replace them with stainless!....AND the washers if you take my advice
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Old 11 February 2019, 11:16   #4
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One wee tip I was given and have used to great success. Getting them out is just as Maximus says is just "good engineering practice!"
Reinserting them and or having had to drill out the old ones with the rubber wheel off is to simply drill a pilot hole through the rubber roller, well greased the new split will pop through with a screw driver, bend it over once in and jobs done. "stupid and simple"
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Old 11 February 2019, 18:10   #5
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One wee tip I was given and have used to great success. Getting them out is just as Maximus says is just "good engineering practice!"
Reinserting them and or having had to drill out the old ones with the rubber wheel off is to simply drill a pilot hole through the rubber roller, well greased the new split will pop through with a screw driver, bend it over once in and jobs done. "stupid and simple"
+1 on drill a hole in rubber rollers
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Old 12 February 2019, 01:43   #6
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One wee tip I was given and have used to great success. Getting them out is just as Maximus says is just "good engineering practice!"
Reinserting them and or having had to drill out the old ones with the rubber wheel off is to simply drill a pilot hole through the rubber roller, well greased the new split will pop through with a screw driver, bend it over once in and jobs done. "stupid and simple"
Great stuff. Thanks. Was contemplating just that but was concerned it would weaken the roller and cause it to split.
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Old 12 February 2019, 08:43   #7
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I have 128 of these to do soon. Are we suggesting drilling a hole in every roller simply to insert new pins, or as a way to remove corroded pins, or both? I see the logic - but I'm reluctant to drill rollers to simplify insertion - although with 128 to do I could easily be persuaded!!
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Old 12 February 2019, 08:58   #8
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Or you could use a small sharp cold chisel & take the ends off the old split pin, remove the roller & punch out the remains.
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Old 12 February 2019, 09:22   #9
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Or you could use a small sharp cold chisel & take the ends off the old split pin, remove the roller & punch out the remains.
My first post on this problem was to drill the hole in the rubber for replacement of the cotter pins. And it can be used to help with extraction. But having 128 to deal with I have found a grinder with in your case mated with a worn down cut off wheel to fit in the space. If you can fit it in between the rubber the cutting off of the heads takes 2 seconds per. It also vibrates loose the rust some if they are stuck. Now I donít have rollers to look at so it may be impossible to do this but if you can itís fast.
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Old 12 February 2019, 11:05   #10
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Or you could use a small sharp cold chisel & take the ends off the old split pin, remove the roller & punch out the remains.
or a dremel with a disc to cut um off, don't get the drilling rollers though, do they heat the pins up to bend in or just force in? Or is the other side of the roller shallower so insert the pin in there last?

Would the roller compress with a G clamp so the pin will be easer to insert got to be another way other that drilling IMO
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