catcrazy - The D311 genset is rated at 21KW for 12 hours at .8 Power Factor, and it runs at 1200 RPM.
It weighs 2760 lbs, and has a S/N commencing at 4V5001. This unit was built between 1947 and 1959.
The S/N tag should be in the same place as on your crawler .. on the left upper rear of the block, behind the pony controls.![]()
Is there any way to find out what manual I need for this unit if the serial number tag is missing? Can see where the serial number tag was riveted on to the side of the block, but it is gone. Also if any one has pictures of what the coupler between the engine & the generator looks like would be greatly appreciated.
Check along the vertical pan mounting flange just under the fuel transfer pump.
Should be stamped there.
Generator coupling should look like this:
Is there any way to find out what manual I need for this unit if the serial number tag is missing? Can see where the serial number tag was riveted on to the side of the block, but it is gone. Also if any one has pictures of what the coupler between the engine & the generator looks like would be greatly appreciated.
Also sand or scrape the paint away where the tag was on the engine and see if it wasn't stamped into the block before the tag was put on.
Talked to caterpillar about coupler & they said that it was discontinued, so unless someone has a used one that they want to part with it looks like I may have to go to after market unit. If anyone has information on what is needed for an after market coupler please let me know, if not I'm sure that my local bearing & drive dealer can figure something out. Its just that I would much rather stay with OEM equipment if possible.
What's wrong with the coupler on your set?
You might get lucky and find one that someone used the engine for a tractor or something or is being scrapped.
How much HP does the D311 produce? I'm trying to match up an after market coupler & I need this information for the bearing & drive guys.
How much HP does the D311 produce? I'm trying to match up an after market coupler & I need this information for the bearing & drive guys.