Precision Engineering with Sledge Hammer !!!

[AndrewMawson]

I came across this Youtube video while searching for tips greasing my slew ring.

Who needs grinding or scraping - no need to mess about with engineers blue - all you need is a Sledge Hammer



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of4dhbBS-9M


They never seem to consider that the slew gear itself might be warped !

[v8druid]

I came across this Youtube video while searching for tips greasing my slew ring.

Who needs grinding or scraping - no need to mess about with engineers blue - all you need is a Sledge Hammer



feature=player_embedded&v=of4dhbBS-9M" target="_blank">

of4dhbBS-9M


They never seem to consider that the slew gear itself might be warped !

Too painful to watch ........ gave up after 5 minutes of abusing the crap out of that poor lil' turret !!!
Would like to know just what was at fault and how it came to be soooooooo rocky!!




Muz yer bugger - yer's moved all the Icons about again!

[AndrewMawson]

Seems that the slew bearing actually broke! He has another video of the wreckage:

[v8druid]

Seems that the slew bearing actually broke! He has another video of the wreckage:

Jeez .......... more painful viewing with a turret that out o' shape it's hardly surprising the original broke up or was it the break up caused it ?

chicken and the egg

[Mick-the-fitter]

Jeez .......... more painful viewing with a turret that out o' shape it's hardly surprising the original broke up or was it the break up caused it ?

chicken and the egg

Brings back memories of Hanix's, could maybe make an easy dredger build!

[Muz]

Muz yer bugger - yer's moved all the Icons about again!

Havent touched a thing .. sometimes they bunch differently on different computers or browsers.

Usually the ring bearing gets so worn that the machine starts to nod a bit, and you can see the wear by using the bucket to jack the machine off the ground. If theres any lift, before the undercarriage comes up with the superstructure, thats free play in the bearing, and there shouldnt be hardly any at all. Eventually the whole unit will fail. Machines that have done a lot of breaker work are more prone to trouble like this.

[v8druid]

Havent touched a thing .. sometimes they bunch differently on different computers or browsers.

Usually the ring bearing gets so worn that the machine starts to nod a bit, and you can see the wear by using the bucket to jack the machine off the ground. If theres any lift, before the undercarriage comes up with the superstructure, thats free play in the bearing, and there shouldnt be hardly any at all. Eventually the whole unit will fail. Machines that have done a lot of breaker work are more prone to trouble like this.

LOL - mine seem to change every five or six days !! Just get used to what's where and bugger me they've all up-ed and moved again!!
Same 'elsewhere' too, so must be a software thing ....... keep you on yer toes !!

Ring lift was the big check when buying a s/h mobile crane - put the boom on the rest and get someone to watch the ring as you take the weight from arse heavy, with the tail weight hanging, to nose heavy with the boom air-borne again.
Wear is inevitable, but that lil' JakieB, in bits, looks pretty tidy to have a catastrophic failure like that.
As you say, you'd get tell tale signs long before that sort of issue reared its ugly head.