Caterpillar D6A
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At the invitation of its new owner, I went to look at a D6A today:
Attachment 125742Attachment 125743 This arrived last Monday from the UK, where it had sat outside, apparently in the woods, for a good amount of time. It still has fairly substantial pieces of the original armour plate (22 mm thick, incidentally — I don’t think I’ve read the actual thickness anywhere) as well as the fuel and hydraulics tanks, seat, instrument panel etc. of the armoured version rather than the normal, unarmoured D6. The tracks are also the original military ones, which apparently differ from the civilian type in both width (50 cm vs. 44, IIRC) and material (high-nickel steel vs. lower-quality). The remains of original military paint are still there too, under the yellow. The ID plate is still legible: Attachment 125741 Chassis number 1T3045. And it came with these bits too: Attachment 125744Attachment 125740 The original winch and dozer blade, though the latter appears to have been modified to be a snow plough and the arm is incomplete, partially rusted through and with bits sheared off. But it should be repairable, by the looks of it. |
D6a
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Wow, what a find! Is this part of the Cat stable of Willem de Braal?
PS: for good measure I attached a picture of D6A - 1T3037 35839-1136 LCT = Det 59 M E Sec - Dozer Exxx221- (censored) 'WINNIE FAY.'- p012929 as identified by Michel Saberly: Attachment 125745 Source: https://flic.kr/p/zRPqD6 |
Willem is the one who posted about it here, but the dozers are owned by the De Braal family, yes. They’ve got three D6s now :)
The intention is to put the armoured cab back onto this one, probably by fabricating a complete replacement and fitting it instead of the cut-down one that’s still on the vehicle now (the real one, of course, will be saved as well). |
I agree....what a find......and not 1, but 3 CATs, sounds like the project has got very serious!
Thanks for sharing the pictures Jakko. I hope Willem will drop by to tell us more about the project and his exiting finds! Quote:
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What kind of shape is the undercarriage and track frames in?.The folks with the ACMOC might also be of some help with your machine.Very nice find
www.acmoc.org |
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Attachment 125789 Attachment 125790 Attachment 125791 Attachment 125792 As said, though, they have two other D6s, and plan to use parts from at least one of them. |
There's a Youtube channel for everyone and everything. If I can find it again, there is one about a fellow who found a 1950s Caterpillar dozer and got it running (salvage workshop). Everything on it is just really big and really heavy. He needed to replace an awful lot of hoses, gaskets, and seals in addition to unbuilding previous owner repairs. In the end it was as satisfying to see his success as it was for him to get there. One thing to keep in mind is the 24-Hour Overnight Delivery 1940s Caterpillar dozer parts store has been shut since the start of the pandemic, and getting the pieces you need will be quite hard.
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I’m fairly confident they’ll be able to get it running — the chap pointing at the engine in the photo there is the one who bought the dozer :)
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Awesome project.
Caterpillar is very proud of their history. The dealer in my area painted up the engine that's on display at the Smithsonian. If the local CAT dealer isn't all over helping out, than go to Corporate. I'm in a class at Caterpillar this week for work and am quite impressed with them as an outfit, overall not just as an engine and equipment maker. Matt |
Any update?
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I haven’t been back, but earlier this year I asked about it, and by this photo he sent me, they’ve started rebuilding the armour:
Attachment 130706 And are doing it by welding pieces into the existing plates, rather than building a new cab from scratch as they originally intended to do. |
I thought the 1T serials were all D7s?
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¹ Which, BTW, appear to be Caterpillar’s actual designations, rather than D6A and D7A that everyone uses nowadays. ² But there is a photo of one marked 1T3060 as well, which has yet to be explained AFAIK. |
Thanks for that Jakko! I knew the 1T serials don't appear in normal Caterpillar productions lists but had just thought they were all D7s. Good to know the facts.
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I am sure that I have seen standard un-armoured D7s with 1T numbers but I didn't record the actual number and of course they could have been rebuilt from armoured ones. Post war there were also 3T and 4T un-armoured D7s. I wonder what the 2Ts were if that designation was used?
David |
2T's were standard D4. 2, 3 and 4T serials all appear in Caterpillar production lists but 1T's do not.
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Cat museum in Brooks, Oregon at Powerland.
There is an extensive Cat museum in the Powerland complex in Brooks, Oregon Those folks may be a help. Dave [in Oregon USA]
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http://www.mapleleafup.net/forums/at...7&d=1600866349 (previously posted here) I haven’t seen a list for the D7-series, but I would suspect they appear there too? Quote:
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2C is for the Medium M4 tank transmission units.
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But is that book a Caterpillar publication? I have two different lists compiled from Caterpillar records (apparently) and none of the 1T serials are mentioned.
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Attachment 130727 Attachment 130728 Attachment 130729 Attachment 130730 |
Those drawings are marked Caterpillar Tractor Co. I had thought that the armour was designed, made and fitted in the UK, possibly by Jack Olding Ltd. I can't see a reason for Cat to give a separate code to armoured tractors and only add 'SP' to other variants like pipe cranes which are just as different to base machines. There were lots of standard 7M D7s used by the military so it isn't because they were military contract.
David |
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I just got some new photos from Christiaan de Braal, who said it was OK to post them here:
Attachment 132586 Attachment 132582 Attachment 132583 Attachment 132584 Attachment 132585 Not sure why they wrote 1T3038 on the front when it looks like it’s actually 1T3045, though. I suspect it’s because they’ll be recreating the armour for that one too, since 1T3045 still had some of the original armour around the engine. |
Armoured D6A
Fantastic work and exciting to see!
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Fantastic work
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I’ll be going back tomorrow to take another look, and will post more pictures of the current state then.
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It’s not mine — I build these kinds of things in 1:35 scale, not 1:1 :) I just know the owners of the dozer pictured, who sometimes e-mail me to say, “Come over to take another look!”
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