hydraulics again

super6 · Post by **super6** » Tue Jun 09, 2009 6:21 pm

having mastered the hydraulics on my super major,i have now bought a diesel major which lifts ok most of the time but can be a little jumpy, but the the main problem is the arms drop.
they go down almost instantly with a 9' pigtail cultivator on them.
would i be right in thinking the main seal is in the section under seat that the lift control lever is connected too.
cheers brett

Post by **Brian** » Tue Jun 09, 2009 8:29 pm

The valve chest comes off and the seal is in the cylinder behind it. You may find the whole lot comes out as one. The cylinder is like a sleeve. There is no heavy lifting

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super6 · Post by **super6** » Tue Jun 09, 2009 9:25 pm

thanks Brian will strip it down and replace seals.
sounds alot easier than the super anyway

Post by **Brian** » Tue Jun 09, 2009 9:41 pm

See Henks post "Hydraulics on my New Major" for pictures of the relevant parts.

super6 · Post by **super6** » Wed Jun 10, 2009 6:00 pm

thanks for the help, stripped it down and luckily had seals left over from a kit i bought for the super.
put it all back together no leaks and arms do not drop.

henk · Post by **henk** » Wed Jun 10, 2009 6:03 pm

Super6,

You have more luck than I, they stil drop slowly at mine.

super6 · Post by **super6** » Wed Jun 10, 2009 8:48 pm

Henk did you replace all the o rings and the big o ring in the cylinder, or just the seal on the piston.
i changed every seal and o ring i could find just a thought maybe you missed the one that is leaking.

henk · Post by **henk** » Wed Jun 10, 2009 9:31 pm

Super6,

I have replaced all the o-rings when I overhaul the complete system a few years ago. I think my problem is at one of the two valves.