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HD21P help

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Traveller View Drop Down
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Joined: 04 Jul 2024
Location: AZ
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    Posted: 04 Jul 2024 at 9:37am
I have an HD21P that has been sitting for I don't know how many years.  was moving it to load on trailer and blew a steering/brake hydraulic line(one of two long lines from rear to front filter assembly on left side), replaced line and it worked for a few minutes then i lost both sides steering and brakes. tried bleeding the lines and still nothing.

second question : how long should it take to have transmission oil pressure? seems to take a very long time before pressure comes up and it happens all at once, from 0 to operating pressure.


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Joined: 14 Sep 2009
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DMiller Quote  Post ReplyReply Direct Link To This Post Posted: 04 Jul 2024 at 12:23pm
Suction screens are probably loaded as of the Surge when the Line burst, will need to pull them ALL down clean and inspect, change filters.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Traveller Quote  Post ReplyReply Direct Link To This Post Posted: 04 Jul 2024 at 1:05pm
thank you for the reply. ill check that out as soon as i get back to it
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Traveller Quote  Post ReplyReply Direct Link To This Post Posted: 8 hours 15 minutes ago at 5:53pm
how do i get to the screen?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Codger Quote  Post ReplyReply Direct Link To This Post Posted: 5 hours 17 minutes ago at 8:51pm
These are all cartridge filters and element screens. Look for your power steering pump and the lines will run right to them.

Need a serial # for the tractor to help further. Most of the cartridge screens are cleanable with time and a solvent tank; filters should be replaced.
A career built on repairing and improving engineering design deficiencies, shortcomings, and failures over 50 years now.
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