My bad luck with gearboxes!!! Help Please!!

[slaychild]

After my factory gearbox for my HL Tiger were bad, I got a Mato 3:1 gearboxes and one is messed up!! The bush holding drive shaft in gearbox wall come out. I can put it back in but when I drive it, it come right back out. Does anyone know of a fix? Here is a pic.

[971wright]

Hi You could try Putting it in a vice and gentle squeese the sides togther ,I had this with the original Heng long gears it worked for me .

regards pete

[Saxondog]

If you disassemble the side plate,place the hole over a vice with the jaws close just to the width of the hole,using a punch strike the opening side once just a good smack,then re-install the bushing,you may need to use the vice to press the bushing back into place.

The frame side should now retain the bushing due to the slight distortion of the hole. It is important to angle the punch on the inside of the gearbox frame pushing the hole edge slightly outward. I used this method just recently on my 2-year old Asiatam gearbox in my Tiger,two bushings had started working out like yours.

If you distort the bushing it may effect the shaft end of most likely damage the bushing,yet the frame if slightly distorted should not effect the friction point of the bushing.

I have disassembled this gearbox maybe 4 times,each time running in and then cleaning the gears.For Lubrication I use 3in1 light oil,a few drops in the bushings. I run the gears dry.

My two cents worth,cheers Blake

[jonger]

I shim my Heng Long metal gearboxes with brass washers - not sure if that would help in this instance.

[slaychild]

thank you guys, for now I used super glue to hold it and it seems to be working.

[Bigwheels_inc]

if the super glue doesnt work solder the edge of the bush to the case, the solder will stick to the brass and stop it pulling through

[slaychild]

I'll try that, thanks