After sitting all winter in the snow and rain, my old big Cat 20 started on the second pull of the crank (w/o any priming). It runs great and I moved it to an area where I plan to make it look almost new again.
The only mechanical problem is "leaking final drives". This is something that has gone on since 1941 when we purchased the tractor used. We got around the problem by adding about a pint of real heavy gear oil before a long day of field work. My (deseased) father used to say the cork seals on the 20 were always a problem.
Dad really knew about Cat 20s. He purchased one new 20 in 1927 and wore it out farming and maintaining roads in Riverside County. He purchased a second one but lost it and the farm during the depression! He used to say the seal problem was solved on the Cat 28 when bellow seals were used instead of cork on the 20.
Recently, I heard there is a way of adjusting the 20tys finals to reduce or eliminate the leakage. Is this possible, and if so, what is the procedure? I'm suprised my dad never mentioned such an adjustment.
Thanks in advance for any help.