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CATERPILLAR D7 "ALL DONE"
- Thread starter MrT
- Start date
Duke Maddog
Well-known member
CATERPILLAR D7
Wow! most impressive! Did you fire it up yet? Something that detailed and well built HAS to run!
Wow! most impressive! Did you fire it up yet? Something that detailed and well built HAS to run!
CATERPILLAR D7
Well I don't presume to be a bulldozer expert and don't know one from another. The engine does look like most pictures I have uncovered. The box art shows this machine in civilian use, but I suppose it could be surplus. I intend to make it for civilian use, but thanks for the detailed advise.
B)
Well I don't presume to be a bulldozer expert and don't know one from another. The engine does look like most pictures I have uncovered. The box art shows this machine in civilian use, but I suppose it could be surplus. I intend to make it for civilian use, but thanks for the detailed advise.
B)
jeaton01
Well-known member
CATERPILLAR D7
The engine is very accurate, that I can assure you. The D-8 engine was made of many of the same components including the starting engine. It just had two more cylinders, and the cylinder heads were 3 cylinder blocks instead of two cylinders per head in the D-7. Caterpiller used the same basic engine up until the D-7F when they went to a high rpm 6 cylinder engine. The D-7E had a turbocharger on the 4 cylinder engine but otherwise looked the same as the earlier D-7 engine. Different governor and I recall it ran at a little higher rpm than the earlier engines. I've run the D-7E dozer and it was a nice tractor.
The engine is very accurate, that I can assure you. The D-8 engine was made of many of the same components including the starting engine. It just had two more cylinders, and the cylinder heads were 3 cylinder blocks instead of two cylinders per head in the D-7. Caterpiller used the same basic engine up until the D-7F when they went to a high rpm 6 cylinder engine. The D-7E had a turbocharger on the 4 cylinder engine but otherwise looked the same as the earlier D-7 engine. Different governor and I recall it ran at a little higher rpm than the earlier engines. I've run the D-7E dozer and it was a nice tractor.
CATERPILLAR D7
Good catch John, I don't think the one I'm working on has electric starter on it either. Presuming you're looking at the cylinder thing above the pony motor?
The oft cited Korean dozer my Father was so interested in. That's him standing next to it.
So how did they start the pony motor without electric start?
Good catch John, I don't think the one I'm working on has electric starter on it either. Presuming you're looking at the cylinder thing above the pony motor?
The oft cited Korean dozer my Father was so interested in. That's him standing next to it.
So how did they start the pony motor without electric start?
CATERPILLAR D7
https://www.youtube.com/watch?v=i-cBungm3uc
Not sure if you've seen this Terry, I have not. I haven't watched it all the way through but it looks like this one does not have electric start, I'll let John make that call.
edit: yeap, crank start.
https://www.youtube.com/watch?v=i-cBungm3uc
Not sure if you've seen this Terry, I have not. I haven't watched it all the way through but it looks like this one does not have electric start, I'll let John make that call.
edit: yeap, crank start.
Heavens Eagle
Well-known member
CATERPILLAR D7
The engine is looking might fine there Terry!
The engine is looking might fine there Terry!
CATERPILLAR D7
BAMN!
BAMN!
jeaton01
Well-known member
CATERPILLAR D7
You used a hand crank, Bob. That shaft sticking up through the hood on the left is where the handle fit. Those suckers had a real kick, you soon learned never to wrap your thumb around the handle. On some tractors the shaft went straight forward and through a hole in the lower radiator tank. The early D-8's were the same. Yes, no electric starter on that one. You can't see the starter crank shaft in your photo, but it is there on the model picture, braced to the radiator.
Good catch John, I don't think the one I'm working on has electric starter on it either. Presuming you're looking at the cylinder thing above the pony motor?
The oft cited Korean dozer my Father was so interested in. That's him standing next to it.
So how did they start the pony motor without electric start?
You used a hand crank, Bob. That shaft sticking up through the hood on the left is where the handle fit. Those suckers had a real kick, you soon learned never to wrap your thumb around the handle. On some tractors the shaft went straight forward and through a hole in the lower radiator tank. The early D-8's were the same. Yes, no electric starter on that one. You can't see the starter crank shaft in your photo, but it is there on the model picture, braced to the radiator.