The Craftmans Shop > New from Old
JCB 803 Saga
awemawson:
Next, scrupulous clean up around the ports, undo a few fittings, try and dodge the oil, how hard can it be :scratch: I didn't entirely avoid the oil :bang: At least it's clean hydraulic oil :thumbup:
Well you may remember before I found the crack, I was unable to undo the first pipe joint so I wasn't looking forward to this part. They were put in mighty tight - several needed my biggest rubber 'dead blow' hammer on the end of a spanner, but eventually they yielded, all apart from one :bang:
This one decided to start unscrewing the fitting from the block and twisting the pipe - manipulating two spanners under there and applying significant force wasn't a walk in the park, but eventually with a bit of judicious violence I got there, and out came the faulty block
awemawson:
So now to transfer all the fittings to the relevant port in the block. I bought the correct 'O' rings from JCB when I got the block because some are far from standard sizes. The fittings are the 'face seal' style, which I'm always slightly concerned with, as the ring sits in a groove and is highly likely to fall out as the block goes back in.
Fittings transferred and nicely tightened down in the vice - so much easier - so much more room :thumbup:
awemawson:
So no more procrastination, shove it back :ddb:
Went in fairly easily, only issue was my 24 mm pipe ring spanner - the slotted variety you can put over a pipe - decided to open up and slip onto the points of the hex and get thoroughly jammed. It's a decent quality spanner but I suppose the spreading forces are quite large. Took a bit of cogitation to find a way to lever it off, as it's all a bit tight round there.
So how did it go - well as the oil was cold I started the engine and left it on fast idle while I cleared up the not insignificant pile of tools. Then took her round the yard for a trundle and exercised the dozer and boom a bit lifting the machine to ensure the relief valve was being used.
:thumbup: :thumbup: :thumbup: Not a drip, not a spot - phew :thumbup: :thumbup: :thumbup:
So that gave me enough confidence in it to put the floor panel back, and crawl into the shower to get rid of that oil :palm:
So just both tracks, track drive sprockets, and track idler sprockets to fit, then sort out the fuel gauge and make the right hand control pod a little more secure - it's wobbling all over the place at the moment
mattinker:
The joys of hydraulics, it may be clean hydraulic, but it seems to get every where. I hate the stuff!
Regards, Matthew
awemawson:
So flushed with success with the relief valve it's time to sort the tracks out - never mind the fact it's drizzling :bugeye:
Firstly need to raise the digger one side at a time to free the relevant track from the ground. Conventional way is to use the digger boom and dipper to tilt the machine, but doing it this way means that the boom and bucket are beside the track that you are working on. As I was going to be doing this single handed and the tracks are extremely heavy I wanted to be able to get my fork lift in from that side to manoeuvre the tracks so a few days ago I made some substantial stands from bits cut off a hedge flail.
Tilting in the normal way, I then could prop the machine up safely and slew the boom out of the way of the forklift.
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