BBates
New member
The parts book is confusing. It list 2 dipsticks: SBA398400310 R/B SBA398400350 dipstick measures 9.13 from underneath cap; years 1-1-1983 to 2-28-1983.
Part no. SBA398400350 R/B 47720351 steel measures 7.68 from underneath cap; years 1-1983 and later.
Gary
I have a 1985 1510,have the same issue.The hydraulic fluid was milky,so I decided to change it along with a new filter.I took all 3 plugs out and let it drain along with the filter,replaced the filter,replaced the plugs,added the recommended 18 quarts of fluid,and ran the tractor,shut it off, and checked the dipstick.Not only was it dry but the reservoir looked dry,so I added the other 2 quarts,repeated the process,and now it just barely registers on the tip of the dipstick.Unsure what to do,if I should add more fluid or not.Maybe I will call the local tractor shop on Monday and talk to them,they used to sell Ford and NH tractors and service them still.If I get an answer I will share it with you.