This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity.
The Forum Parts and Services Unofficial Allis Store Tractor Shows Serial Numbers History
Forum Home Forum Home > Allis Chalmers > Construction and other equipment
  New Posts New Posts
  FAQ FAQ  Forum Search   Events   Register Register  Login Login


HD21P help
 Post Reply Post Reply
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
Traveller View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 04 Jul 2024
Location: AZ
Points: 8 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Traveller Quote  Post ReplyReply Direct Link To This Post Topic: HD21P help
    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.
Back to Top
Sponsored Links


Back to Top
DMiller View Drop Down
Orange Level Access
Orange Level Access


Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 31116 		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.
Back to Top
Traveller View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 04 Jul 2024
Location: AZ
Points: 8 		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
Back to Top
Traveller View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 04 Jul 2024
Location: AZ
Points: 8 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Traveller Quote  Post ReplyReply Direct Link To This Post Posted: 06 Jul 2024 at 5:53pm
how do i get to the screen?
Back to Top
Codger View Drop Down
Orange Level
Orange Level
Avatar

Joined: 23 Dec 2020
Location: Utopia
Points: 2041 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Codger Quote  Post ReplyReply Direct Link To This Post Posted: 06 Jul 2024 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.
That's All Folks!
Back to Top
Traveller View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 04 Jul 2024
Location: AZ
Points: 8 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Traveller Quote  Post ReplyReply Direct Link To This Post Posted: 07 Jul 2024 at 9:03am
sn# is 13374
Back to Top
Codger View Drop Down
Orange Level
Orange Level
Avatar

Joined: 23 Dec 2020
Location: Utopia
Points: 2041 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Codger Quote  Post ReplyReply Direct Link To This Post Posted: 07 Jul 2024 at 4:08pm
That's All Folks!
Back to Top
Traveller View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 04 Jul 2024
Location: AZ
Points: 8 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Traveller Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jul 2024 at 12:14pm
thanks again. the filters didnt look too bad. i replaced the second long line and had steering for about 50 feet again then lost it again.is there a way to bleed the system? also i cant seem to find where to add the fluid. its only at minimum operating range on the dipstick (if its the correct dipstick that im checking) im  missing the most forward dipstick of the 3 next to the seat. the most rearward dipstick seems to be the correct one.
Back to Top
Ray54 View Drop Down
Orange Level Access
Orange Level Access


Joined: 22 Nov 2009
Location: Paso Robles, Ca
Points: 4546 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ray54 Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jul 2024 at 12:59pm
Try going to"General Gear" a after market seller of steering clutch parts for all crawlers. In the last years they added parts books for sure, but I think other books to help people working on the old stuff. So they may have the operators book you desperately need.
Back to Top
Traveller View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 04 Jul 2024
Location: AZ
Points: 8 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Traveller Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jul 2024 at 7:13pm
thank you. ill check them out
Back to Top
Doughd16b View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 01 Sep 2022
Location: Nc
Points: 28 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Doughd16b Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jul 2024 at 4:00pm
I think I can help, 252 916 2927
Back to Top
Traveller View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 04 Jul 2024
Location: AZ
Points: 8 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Traveller Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jul 2024 at 8:09pm
Thank you i will give you a call tomorrow (friday)
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 11.10
Copyright ©2001-2017 Web Wiz Ltd.

This page was generated in 0.109 seconds.


Help Support the
Unofficial Allis Forum