With the vast knowledge and resources on this board I'm hoping that someone can identify this Caterpillar engine a fella is offering me for my M813 repower.
Here goes:
Model# 3406DI
Serial# 70v29102
Arrangement# 5R6706
Thanks in advance for any help you can give,
Eddie
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1977 USMC M813-A1
M796A1 Trailer
MKT-95 Field kitchen
I don't have much to offer but I think the 3406 was the inline 6 used in a lot of medium duty trucks. I have a friend with a GMC Topkick with the 3406 in it.
Location: Northern Michigan - Tip Of The Mitt - Squaw Creek
Posts: 1,646
Quote:
Originally Posted by poppop
I don't have much to offer but I think the 3406 was the inline 6 used in a lot of medium duty trucks. I have a friend with a GMC Topkick with the 3406 in it.
wow! 3406 in a top kick!
talk about a kick with some kick!
The 34 part is the cubic inches per cylinder, 6 cylinder, DI probably direct injection. I could be wrong so still better to call CAT. That would make it a little over 200 ci, not a very big engine displacement.
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1952 M-38
LST-178 Lube and Service Trailer
M-105A2 trailer, bare
M-105A2 with sides, bows
'old' Onan 115 v radar power generator, 4 cyl opposed
2 x S-250 Shelter, 318 shelter
1957 Unimog 404 flatbed, French NATO (Germany)
1965 Unimog 404 radio truck (German Army)
1970 Unimog 406
1978 Unimog 406
1982 Unimog 406
1988 Unimog U-1300L MIL contract, Fire Service life (red over OD paint)
A 3406, if memory serves, is an inline 6 of 893 cubic inches. Horsepower ratings ranged from about 280 to 425 depending on set up. These are fine engines with a mechanical pump, tubro & aftercooler. Hope this helps.........Creeker
ok, I have limited info tonight. But here is what I do have. This is a 3406B, Direct injected, Jacket water aftercooled. 350 hp gross. advertised is 330 hp @1900 rpm. Hi idle limit @ 2300. I beleive this to be the front engine fora 621e/623e or 627e scraper. So i am going to assume it will need the flywheel housing changed to a truck style. Also i think this will have a cooler for powertrain oil that would have to be removed,at this time the rear seal would have to changed out to a dry flywheel type. As for the meaning of 3406, 3400 is the family type. 6 is the obviously the number of cylinders. displacement is 14.6 liter or 893 cubic inch. other engines in this family are the 3408 and 3412, a V8 and V12. I will take the numbers to work tomorrow and see what else i can find out.
The Following User Says Thank You to garp For This Useful Post:
95% of 3406A models are not DI, but rather are PC. Precombustion chamber with glow plugs. A few late A's were DI or it was converted at overhaul. An easy way to tell between an A or a B is the fuel injection pump. An A has a rounded body pump mounted away from the front cover via a housing about 3 in in dia. and a foot long. Bs and Cs have a flat topped pump, a plate on the side of the body with about 15 or so 1/4 bolts holding it on and is right up against the front cover with the front 2 fuel lines actually under the air compressor if so equipped.
Identify this Cat! Please!
