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


HD6 Tran Fork 1st/Rev
 Post Reply Post Reply
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
Smokin Iron View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 24 Jul 2024
Location: MS
Points: 5 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Smokin Iron Quote  Post ReplyReply Direct Link To This Post Topic: HD6 Tran Fork 1st/Rev
    Posted: 24 Jul 2024 at 11:13am
Hello All,

I'm new here with a newly purchased HD6. It has sat for 20 years due to the trans shifter not being able to shift gears. I was able to get it to run very easily and for the most part it runs great. I removed shifter and aligned the fork and it never goes to neutral. I can't get reverse either. I know that the fork is either broken or compromised to some extent. My question is do have to remove the trans to replace the fork if needed?
Back to Top
Sponsored Links


Back to Top
gemdozer View Drop Down
Orange Level
Orange Level


Joined: 17 Sep 2009
Points: 966 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gemdozer Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2024 at 6:44pm
I am not sure but should need to removed the transmission but you could check by the inspection side plate transmission it could be some rust on shaft
Back to Top
Les Kerf View Drop Down
Orange Level
Orange Level


Joined: 08 May 2020
Location: Idaho
Points: 745 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Les Kerf Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2024 at 11:25pm
I looked it up in my service manual and I think it would be nigh unto impossible to do without removing the transmission.
Best wishes Smile
Back to Top
Smokin Iron View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 24 Jul 2024
Location: MS
Points: 5 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Smokin Iron Quote  Post ReplyReply Direct Link To This Post Posted: 25 Jul 2024 at 12:21pm
Thanks for the responses. Looks like I'll be removing the trans. luckily the trans can be removed pretty easily. The rail moves but the gear doesn't change it stays in 1st. 

 
Back to Top
gemdozer View Drop Down
Orange Level
Orange Level


Joined: 17 Sep 2009
Points: 966 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gemdozer Quote  Post ReplyReply Direct Link To This Post Posted: 25 Jul 2024 at 2:33pm
Did you check the plunger locking
Back to Top
Smokin Iron View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 24 Jul 2024
Location: MS
Points: 5 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Smokin Iron Quote  Post ReplyReply Direct Link To This Post Posted: 25 Jul 2024 at 3:50pm
Not really sure of  the plunger but I think that is what is actuated by the clutch and has a rubber sleeve boot. It does move when the clutch is activated. The 1st/rev fork however is loose and can be moved sideways instead of just for and aft. The other 2 forks have no movement sideways and moves back and forth only. Due to the fork moving outboard for 1st and reverse the shifter bottom comes out of the gate. When all forks aligned it stays in 1st gear and won't go into reverse or neutral.
Back to Top
gemdozer View Drop Down
Orange Level
Orange Level


Joined: 17 Sep 2009
Points: 966 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gemdozer Quote  Post ReplyReply Direct Link To This Post Posted: 25 Jul 2024 at 6:47pm
You could check too the 3 capscrew shifting ball spring maybe the ball 1\2 are freeze on shaft.
Back to Top
Smokin Iron View Drop Down
Bronze Level
Bronze Level
Avatar

Joined: 24 Jul 2024
Location: MS
Points: 5 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Smokin Iron Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jul 2024 at 2:34pm
Okay I will check that also. Would a frozen ball prevent the fork from moving for aft? Remember it moves but what should be neutral is still 1st gear. if I move it to reverse the it stays in 1st. If I move any other fork it binds in 2 gears.

Thanks for recommendations.
Back to Top
DiyDave View Drop Down
Orange Level Access
Orange Level Access
Avatar

Joined: 11 Sep 2009
Location: Gambrills, MD
Points: 51235 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DiyDave Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jul 2024 at 3:16pm
Sounds like a bent or broken fork, or possibly wear on the tip(s) of the fork...
Source: Babylon Bee. Sponsored by BRAWNDO, its got what you need!
Back to Top
gemdozer View Drop Down
Orange Level
Orange Level


Joined: 17 Sep 2009
Points: 966 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gemdozer Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jul 2024 at 8:02pm
If the shaft move the ball are't freeze on well could be the fork or the the lock plunger is in trouble
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 0.078 seconds.


Help Support the
Unofficial Allis Forum