Re: Hymac 580BT 1969
Posted: Fri Aug 21, 2020 12:00 am
While the Poclain was drying in the sun I decided to tackle a job that has needed doing for a while now on the Hymac, one of the two steel pipes which feeds the left hand track drive motor had sprung a leak, I had already noticed that it had been hastily brazed up at some time in the past, however I have asked for a new pipe to be made up as once it was removed I found that it had been crushed at some point in the machines life. These pipes are not in the easiest of places to access and I ended up with my right arm soaking in hydraulic oil.
Some of the other flexi-hoses don't look too clever either so I can see more work ahead here in the future but I wanted to focus on getting the steel pipe replaced first.
The main issue is that the hydraulic oil drains down through the system once you remove this pipe, fortunately I have a bung of that thread so I was able to seal the connector where the pipe fastens onto, I also had to bung up the track drive motor or the oil would also leak through that, looking forward to a nice new pipe to fit back onto the machine.
Jeremy
Some of the other flexi-hoses don't look too clever either so I can see more work ahead here in the future but I wanted to focus on getting the steel pipe replaced first.
The main issue is that the hydraulic oil drains down through the system once you remove this pipe, fortunately I have a bung of that thread so I was able to seal the connector where the pipe fastens onto, I also had to bung up the track drive motor or the oil would also leak through that, looking forward to a nice new pipe to fit back onto the machine.
Jeremy