I have the reproduction version of the shop manual and it has that saying in it.
The oil pressure on my 881 is low like yours, about 12 psi at idle, 30 at pto speed, I'm using Delo 400 15w40.
I'm thinking about dropping the pan and changing oil pumps, I'm pretty sure Ford upgraded the oil pump later on, dads old 850 would make 60 psi cold, run 40 psi hot and 20 psi at idle, oil pump wasn't the original.
My 881 is a 62 model, last year of the 801 series, in 63 they painted them blue and called them 4000
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Today's Featured Article - Restoration Story: 1964 JD 2010 Dsl - Part 2 - by Jim Nielsen. Despite having to disassemble the majority of my John Deere 2010's diesel engine, I was still hopeful I could leave the engine-complete with crankshaft and camshaft-in the tractor. This would make the whole engine rebuild job much easier-and much less expensive! I soon found however, that the #4 conrod bearing had disintegrated, taking with it chunks of the crankshaft journal. As a resul
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