Hymac 690

[Jeremy Rowland]

Well you can arrange anything except the weather and as I had already booked Thursday off work I was determined to get up there and see if I could get anything done, on the plus side my inlet manifold has been repaired, so I thoroughly cleaned it off and gave it a coat of paint just to tidy it up, must say that Lee has made a fantastic job of the repair too . I forgot to take any photos of the finished article.

Jeremy

[Jeremy Rowland]

Well I suppose that it's true for many different restoration jobs as you do one job, it automatically leads straight to the next one; now I had to drain the hydraulic oil because I needed to jack the engine up to get the sump off for the strip down and to do that I had to disconnect the main hydraulic hoses to the pump.
This was not a particular issue to me as I wanted to change the hydraulic oil anyway, however while the oil was dropped out it goes without saying that the hydraulic oil filter would also be changed, it is housed on top of the main machine body beneath a round steel cover some 340mm in diameter. The issue was that four of the cover bolts snapped off when I removed the cover. These were originally studs which had been welded into place as part of the hydraulic tank assembly, I wasn't quite sure how I would repair them but decided to drill them through, re-tap a new thread and screw a bolt in from underneath, the issue was preventing and swarf debris from entering the tank, this was done using some wood to cover the filter hole, plenty of rag and a very powerful magnet. The repair was a success so that was another job done out of the way.

Jeremy

[Jeremy Rowland]

Must confess to making a couple of trips up there but just not had the time to post anything anyway here is the latest update; I made a new cork gasket for the hydraulic filter cover lid, using the lid to draw around and mark out the hole positions, so that was the first job done. The next was to use a repair kit to try and stop the diesel leak from the DPA pump, I'm not overly confident that this will have cured the leak, will find out once I have a tune out of it.
After finishing the pump I fitted it back on the engine, next was the repaired inlet manifold, short of oil, coolant and bleeding the engine is ready for the first run since rebuild, only things holding me up is the large hydraulic main inlet pump flexi suction hose which I am trying to get one made and the main hydraulic oil filter, plus some fresh hydraulic oil then I will try the run up attempt.

Jeremy

[Jeremy Rowland]

Some more photos.

Jeremy

[mechman]

Hi Jeremy.
Will there be a vid of of the start up?
Norm.

[Jeremy Rowland]

Hi Jeremy.
Will there be a vid of of the start up?
Norm.

Yes, I was hoping to do that all being well.

Jeremy