Thread: Dozer gearbox

There is a bronze alloy that you could apply with oxy. It has hard wearing properties. I got a packet of rods from BOC. Not of course for a dozer gear box but it should work just fine for your application. I gather you can run a oxy ok, just warm up the cast to burn out any oil before you start.
Cheers Hall

Thanks Hall.....I will write your advice in my grubby old school book
dave

Probably not so relevant on small parts like this, but once brazed, cover them up to allow them to cool slowly. More critical on larger parts so different cooling rates don't cause stresses to build up eleswhere and cause cracks.

At least that's what my welding teacher told us back in the late 80's when I was taught this. Brazed quite a bit of cast over the years and never had one break afterwards, but then I've always followed his advice. 😊

And no I'm not a welder but during my Electrical apprenticeship we were taught oxy welding for 2 weeks full time at the SEC, so take my advice with a grain of salt compared to those here that may do a lot more of this than me.

Thank you Homestar, seems good advice, I remember an old smithy in the district would leave some of the work in the coals for quite a long time ........then on different metal would quench immediately . I wish I had written that in my book instead of throwing horseshoes at the brother.
dave

Put it in a drum of lime,covered of course with the lime,very slow cool.
cheers
blaze

Thanks bblaze,
I gather you live in Smithton, I farmed at Montumana for several decades til 2003 , along with said dozer, but now down "The Channel '. reckon there is still some red dirt in the undercarriage.
dave