Tea20 hydraulics exposed to the light

[kaesark]

Well no joy with parts getting serviced in town so thought I would whip the top off of the hydraulic pump so as to enable a thorough flushing.
Hope I don't have to go through all this process again once I get the girl firing on all four cylinders. Is there anyway of determining if the the cylinder and piston are in good order before putting it all back together, no gouges to the eye visible.
Regards


 

[Tony in Mass.]

Well you opened the can of worms now didn't you. So keep cleaning, get all the grit out of there- I think I can see it on the red primer. Replace the safety release valve, if you don't see scoring, the cylinder should be fine. Take your time, don't cut corners at this point, and this section might be good for another 20 or 30 years.
 

[kaesark]

What do you think of water based degreaser,
if I make sure all is dried off afterwards.
Regards
 

[Tony in Mass.]

This time of year, no. Diesel, kerosene - paraffin? you call it? No soaps, no more water!
 

[pcp20us]

As tony said.

I dont like water based degreaser, as they dont really work, they leave a film of grease on what your trying to clean.

Clean all the crude out of the bottom of the pump housing as well, when i pulled my pump could not believe the amount of crude in there.

Here is a question

ON the tea20 with the piston and rings for the hydraulics, what is the leak down time with a implement on them with tractor off....

With a set of forks on mine will sink in around 10 to 20 mins..

I understand oil works its way around the rings hence why it drops.

The 8n I believe have a solid oring around the piston, So do these still leak down or do they stay where you want them...

Reason being, I need to look at mine and i would like the hydrsaulics to hold where i leave them after tractor off for doing work..


cheers

 

[kaesark]

I would be very interested in the answer as
to leak time for hydraulics left in the
raised position.
 

[Tony in Mass.]

Poms and strines asking the same question in the same hour... a day apart...????
right. No weight back there... might never fall on its own. An implement, 2 or 3 minutes give or take a couple hours. A Dorf 8 or 9N- they have a nylon-neoprene O-ring, which in good nick, can keep a hitch raised for days. You can replace the middle of the 3 iron rings with a hardware/DIY O-ring... but remember, this was a safety feature Harry Ferguson wanted on there, incase of a breakdown, accident- for the operator, other farm hands back there, kids playing around, best for the machine itself? It's your machine, so its your call.