Nice looking machine. I am not up to date with models in the earth moving side but I can operate these old ones fairly well. The serial number to me is unusual as compared to tractors. Have you tried to Google the serial number? What is behind the guard at the bottom of the grille? Is it the hydraulic pump? I used to think these started with a T in the serial numbers.
Cheers Cobba & Cobbarette
Coopernook, The Centre of our Universe
Working on more play time.
Drott was the sole supplier of loader attachments for International Harvester crawler tractors in the 1950s, until International introduced their own line of integral loaders. It developed the first multi-purpose bucket; dubbed the 4-in-1 bucket, it gets its name from its four functions: dozer, clamshell, bucket and scraper. The 4-in-1-line became the basis for International Harvester’s crawler loader line. In the UK they were colocally known as "Drotts" (and the term was often used for other makes of tracked loader like JCB was used for all makes wheeled backhoe loaders) Model nomenclature: Drott model numbers had a prefix that matched the model number for the tractor; i.e., the TD6 used a 6K3 loader. An “A” suffix indicated a later improved version.
Possibly getting a bit sidetracked, by the numbers shown in the photo??
You can JUST make out the wording "Built in Australia by IHC blah blah"
Next plate saying "made under arrangement with Drott Man. of Milwaukee..................."
As stated here, IHC had almost exclusive rights to "DROTT" and "SKID-SHOVEL" in Australia.
That "A 6 B K 3" to me looks like the model # of the TRACTOR itself???
The "5 3 1" series # COULD possibly be the series of the actual attachment. i.e. the front end loader with the clamshell bucket.
Just a WAG.
Only IHC stuff I recall had a string of numbers with a couple of letters FIRST, e.g. TD 15-18-20-24-25 etc
Also had the BTD series.
Possibly the A 6 B K was a designation specifically for front -end-loaders??
Like I said, a WAG at best.
Pretty sure Lang has it nailed right there, either built on a TD or BTD 6 running gear, maybe the A 6 K relates to either the DROTT portion or IHC's designation to seperate it from a dozers designation.
I think its an A100,aka T D 6......the diff is a BTD is british and will have a different motor to a US made one.........However ,to the nitty gritty ......these inters were a right POS ,IMHO the only Inters ever any good were post 1960 ,the TD15B,and TD 20 ,correcponding loaders the 175 and 250......After IH took over the Jumbo factory ,the motors improved and small machines were all German ,well made ,but highly complicated ,as German stuff is...........My advice is go through the whole tractor carefully before spending one more dollar .....usually they are moneypits with ripoff prices for s/h spares ....if you can get them.
Lang is on the money as usual, as I learned it some place, A is australian, B is British, T is track, D is diesel, this system followed thru on all its 50, 60, & 70's machines. AFAIK. So a tractor expert will clarify the engine etc.