Neighbour about 1/2 a mile away .... as the crow flies .... two by road, has this ....

Ovlov EC15B ....

not had it very long and giving strange issues. Contacted me through a series of PMs here ..... guy I've not seen in 40 years and we're 1/2 a mile apart !!! LOL


could I possibly lend any assistance with some trouble shooting ... he'd seen me gauges in a thread on here.
Not having seen John in such a long time, was quite a surprise to find he was so close ... so yeh, I was up for a catch up and a shufty.
Machine is losing all hydraulics intermittently and if provoked will stall the old girl too ??

After a bit of a catch up after I'd arrived, we got down to the beast ... three Staufs .....


A appears to be directly adjacent to the main P line into the chest/block ......
C is on a block which I can only assume is a pressure reducer valve from main to servo pressure - has a P and a T and feeds the servo circuits.
B is a bit of a mystery and looks for all the world like an LS line ??
the pump that's on it though is a gear type, fixed displacement, not a VP, which'd need the LS line to function, so I'm a bit nonplussed as to quite WTF it does?????
Stauf A produces no movement on the gauge - AT ALL - no matter what you try/do/operate .. this is supposed to be where main circuit pressure is measured at ???
Stauf B produces 140 bar when a motion is operated - any motion
Stauf C is showing 25 bar, constantly when the machine is running.
the MRV is missing its seal cap, which is lying under it, in the guts -- yellow thing, under the blue MRV which is under Stauf B and shows signs of having had an allen key in it, but no witness marks in the paint on the lock nut or the body ???

I also discovered that it's been 'gotten at', before John's ownership !!
I'm told by a reliable source (MUZ/Mattir) that MRV should be set at 180 bar and the servo circuit pressure should be 35 bar.
if the MRV has been wound down, I'd see it on the body, devoid of paint on the threads, but it wouldn't then make her stall??

if it's been wound up ( ? ) which is more likely, I'd expect to see a LOT more than the 140 bar I'm seeing at Stauf B.
Any one else have any suggestions/information/knowledge of these beasties ... a hydraulic schematic'd be awesome


the reason I ask about the pump is ...... this one appears to have been off , or perhaps replaced








and wondering if the right pump is fitted to the machine ???????

the mount face looks like it has had a larger pump fitted, previously ??

Spent most of yesterday evening, after I got back, from John's, proof reading, punctuating and spell checking half of Pam's daughter's dissertation, for her PGCE course she's been doing, this last 12 months, followed by the other half this morning, after I'd un-fried my brain, with a few hours sleep.
So wasn't the earliest of starts for my job for the day .....
four down ......


reckoned on another two to go....


aside from the re-packing of the three dumpies, currently sat on me cages!!

Squeak was exhausted by all the effort ...... of watching me do it all .......


Managed to blag myself a few pallets on Friday on the way home from some 'cherry shopping' .....
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and got me 'cable collection', relocated onto one of 'em Friday evening, 'fore committing the remains of the previous pallet, under it all, to the burning bin.

This lot came home from me workshop .... wasn't leaving it there for their demo boys....I have a use for it and fixtures and fittings weren't included in the sale !!! .. enough there to sort my new shed's requirements ... and some !!


Saturday day'd been a write off, as far as doing anything was concerned, other than entertaining Clara, whilst her mum frantically finished off her dissertation, for our perusal.

weather forecast is pretty good for the week, so might even manage to relocate some spoil, if yon field's dried enough!!



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