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Update on farmall 806 diesel

K

Kory1998

Member
I went and checked timing
Ended up timing engine to 4 degree BTDC and lined pump line up. Tractor does run a lot better, how ever at roughly 1000 to 1200 rpm you can hear a faint miss or fluder like it not lined out right if you rev past it smooths out only at certain rpm, could anyone guess of anything else? Put tractor on disc and it had power to pull disk pulled great, just when you get to about 1000 1200 rpm it has that sound. This tractor has an 856 injector pump with 806 lines and injectors.
 
Some fluttered at that range when new. I dynoed a few that fluttered shop foreman said its ok.some are still runniing working fine
 
Not sure about the 4 degrees. On mine with the RD pump it was set at 50 degrees for the correct mark on the flywheel and has worked fine for 40 years. Still will pull the disc and other heavy work for it's size.
 
Since i am getting older and gave up keeping spec.'s in my head i would have to go dig up the spec.'s out of the book to be sure and i would have to be there to listen to what she is doing and put the timing window on the pump to see what the advance is doing . Messing with a D 361 is NOT for the novice . and a major tune up done correctly is a big plus . Your valve set will not be the same as mine as the FEEL thing comes from many years and many valve sets and the valve set has and affect on performance . Rocker arms ware with age and some have a ware pattern that will affect the setting of the valve and give a false set , pump advance can be sticking , a governor ring could be starting to come apart , the pump head may have ware and not doing it's thing , you could have injectors not seating properly , nozzle tips that are wore out and not giving a good spray pattern . I have been around 806's since they first came out and ran many and worked on a lot of them and owned several and still own and run one . Having the tools and special tools and equipment to work on them is a HUGE plus .
 
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