JCB 3C11 Back actor play

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mart31_uk
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Re: JCB 3C11 Back actor play

Post #31 by mart31_uk » Tue Jan 02, 2018 12:25 pm

great photos, i have the same problem with play in the slew. re. the drain plug photos, i think i can see two plugs underneath on the photo and am i rigbt to assume its the one on the right that i need to drain it out?

if so, does anyone know what the one on the left is for?

i am more than a little worried about dumping all the hydraulic fluid (120 litres or so of it) in to a 5 litre tin :-)

cheers

martin

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Tillywolves
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Re: JCB 3C11 Back actor play

Post #32 by Tillywolves » Fri Jan 05, 2018 8:35 pm

Yes Martin, the one on the right of the photo. It will only drain the slew gearbox oil, about 4.5 lts of water in my case.


mart31_uk
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Re: JCB 3C11 Back actor play

Post #33 by mart31_uk » Mon Jan 08, 2018 12:35 pm

thanks for confirming. the cover on mine is also buckled, so am assuming frost damage caused that.

incidentally, i used wynns engine flush when changing the engine oil and i have never seen such dirt come out with oil before (and i have changed a lot of oil over the years).


topkit
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Re: JCB 3C11 Back actor play

Post #34 by topkit » Mon Jan 08, 2018 9:13 pm

I am in the processes of doing my project 7 3CX i hav taken the drain plug out and ot the usual sludge out just wondering what to use to flush it the rest out, i have new slew pot seal kits so i suppose it does not matter what i use as i will be re sealing it all.


mikefoxo
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Re: JCB 3C11 Back actor play

Post #35 by mikefoxo » Tue Jan 09, 2018 6:56 pm

My father has a 3MkII with a sloppy slew. It's a small bit different to the other pics so I said I'd just check with the experts :D In the first pic it has a large plug with a breather coming put of it - I'm guessing this is where you fill it up. In the second there are two plugs. The big one at the top is nearest the back of the machine - is this the one I open? Thanks in advance
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Tillywolves
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Re: JCB 3C11 Back actor play

Post #36 by Tillywolves » Mon Jan 29, 2018 9:20 pm

I cant say for sure as I've never seen a mk2. The plug with the vent will be the filler. The other two plugs, are they at the bottom of the assembly.

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FOWLER MAN
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Re: JCB 3C11 Back actor play

Post #37 by FOWLER MAN » Tue Jan 30, 2018 11:55 am

If I remember rightly both bottom plugs to drain and the large plug n top with the drain, (breather), is the filler. There should be a dipstick attatched to the underside of that plug.
As you probably know the oil is EP90.


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