How to remove rear square wheel from the driveing axle??

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dax0121

dax0121

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I have FG MT5 and I bought a set of rear aluminum uprights and I was planning to use the existing bearings, bush, and driving axle from the stock palstic uprights. How do I remove the GRUB SCREW from the square wheel, it so hard and looks like there was too much locktite from the factory set up? How do i loosen up the locktite? Please if you have any ways that would work let me know. Thanks...
 
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Heat it up. Locktight melts/burns at high temp and will pop loose.
I use a pen torch. You can also use a soldering iron if you cannot adjust the flame enough to not melt stuff.
 
pipeous said:
and get a good hardened allen wrench set, the kind with handles. cheap allen wrenches just strip and cause more troubles
Click to expand...
Great advise there fellas, Do get a good set of allen keys,I didnt about 7 years ago when I first got my 1/5th scale and ended up rounding the grubs off! I took i t down to a local engineering firm and they charged me £10 a corner to drill,weld and re-tap new holes in them.(I know you can get them off ebay now for buttons,but I didnt know this at the time) A pricey thing.
J.
 
I tried to heat it with my soldering Iron but I think it was not hot enough and I ended stripping the grub screw. Tried to hammer it and now I cannot screw in the nut that locks the wheel/tire. I just ordered new parts for the aluminum uprights. My bad and it was not cheap. Thanks guys for your replies
 
one more thing to get the grub screws out... I bought a set of grab its from canadian tire. kind of an easy out. you drill with one end and it removes stripped screws the other end. a good investment. only screw it has not been able to get out for me was the throttle shaft (too small). I traded for a 1/10th crawler and the guy used red loktite everywhere. the grab it saved me
 
Do you have a plumbers torch? You an slowly heat up the square. The square bing aluminum will heat up fast and expand, also melting the locktight.

Even if you screw up the two grubs or holes you can drill and tap the other two with bigger grubs.
 
I had to hack a layshaft gear last night. grub screws were stripped in the used mt I bought. It had 3 grubs. I got 2 out with the grab it. one was not coming so I basically drilled a massive hole lol... he must have used cheap allen wrenches
 
I used to use the micro torch, but even that didn't work sometimes.. Now I use the Mapp gas torch, the yellow one, the same the plumbers use. Works a treat.
Now that the set screw is done for it, just get a good drill bit and drill it out slowly.

Good Luck

Chris
 
Always use quality allen wrenches, like this one:
http://www.rcmart.com/catalog/rc-tool-team-allen-wrench-110991-p-17379.html?cPath=456_40

Even cheap ones in this tipe are miles away that any other available at local hardware store.

About the loctite-ed screws from factory.
They don't use loctite, you can buy screws with "tuflock", it looks like plastified loctite on screw and it's harder to release, so use quality allen tools and if needed small torch.
On Loctite's blue and red you don't need torch, but with green loctite almost every time you need to use the torch.

My personal no.1 choice in screw retention is
268.jpg


Holds perfectly, no need to use torch, and no messy parts. Especially unpleasant when standard flowing loctite goes under alloy gear carrier and holds between carrier and central shaft, is cause you don't have hardened shaft, you can practicly throw it in trash...

Just hope these few tips will help you guys..
 
Thanks Stegy.

+1 on the EDS tools.. I have a whole bunch of tools myself and you're absolutely correct, a good pair of quality allen wrenches will save you a world of headaches.

About the loctite, Here in America anyways, the most recognized ones are blue and red. The Blue #242 being Medium strength and the red #271 being high strength.
There are other renditions of them such as the green #290 has a low viscosity and is intended for pre assembled parts and purple #222 is low strength.



Chris
 
I had trouble getting the gear off the lay shaft so I use a gear puller to get it off without loosing the screws and off it came. Once I had the gear off the grub screws came out easy.
 
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