(800) 853-2651
SHOP NOW

706 Range shifter shaft removal

B

Bkpigs

Member
I am trying to remove the vertical shaft for the range shifter. There is play between the shaft and the bottom arm. Hoping it is just the woodruff key that is worn. I removed all the linkages and the retainer on the top of the shaft. I also removed the roll pin for the "rooster comb" looking thing just above the lower lever, and the bolt for the lower lever. I cannot get the shaft out though. Is there something else under that transmission cover that is holding it in? I can get it far enough up that I can see the o-ring, but no further. I can spin the rooster comb and get it to move up and down a bit. I am thinking maybe the key is bound up, but don't want to continue beating and prying if there is something else holding it.
 
Well one or two things might be hanging you . Sofar what you have done was not necessary . Lets start from the top . (1) since i do not know what park loc is in this tractor first block up the park lock with a 1/2 Nut placed under the lift linkage/ Arm on the TOP SIDE , that will get the park pawl out of the way .(2)next remove the clipped corner side plate on the left side of the transmission case behind the left step this gets you to the rev shifter fork. If the hyd oil level is at the full mark when you remove this plate you will loose about 1 gallon of oil , If your tractor is five over full then you will loose 6 gallon . Now you could be hanging up in the rev shifter fork and that is easy to over come as when you start to lift the cover you now can tap the fork down off the shifter shaft . Yes there is a half moon key in the shaft . Now if the cover still will not come up son you have a huge problem and just a couple weeks ago another guy out west with a 1086 had the same issue . His problem was that the pin that holds the park loc pawl had worked loose and come out part way and due to the design of the rear housing would not allow the cover to come up more then about and inch . I had that same issue on a 1086 a couple years back that turned a four hour job of top cover rebuild into a 14 hour nightmare . Now as to your shifting problems and i have fixed many 706-806 shifting problems is that that little key in the rev shifter shaft over time of SLAM shifting wollows the shifter shaft out and will need a new shaft and key . The Rooster comb as you call it is really called a shifter CAM , they can ware BAD . You could also have broken and missing roller and a missing detent spring . The cover is more then likely wore out and both the main shifter shaft that goes into the cam has lots of sloop and play that needs to be addressed . The rev. shifter arm the TEE shaped shaft more then likely has lots of ware along with the hole up thru the top cover that needs work or a new top cover needs to be bought . What all starts these problems is due to hard shifting where they become hard to get out and back in gear and now we start SLAM SHIFTING the tugging and jerking on the shifter . This is caused by the clutch getting out of adjustment on ALL the linkage , loss of free travel, trans brake out of adjustment and the biggie the DUMP VALVE . When ya have everything adjusted correctly they will shift with two fingers . And due to age and extensive field testing over the years ya can't adjust them by the book . I have covered my way of doing this many times over and can be found in this sites archives .
 
(quoted from post at 16:44:33 09/14/21) Well one or two things might be hanging you . Sofar what you have done was not necessary . Lets start from the top . (1) since i do not know what park loc is in this tractor first block up the park lock with a 1/2 Nut placed under the lift linkage/ Arm on the TOP SIDE , that will get the park pawl out of the way .(2)next remove the clipped corner side plate on the left side of the transmission case behind the left step this gets you to the rev shifter fork. If the hyd oil level is at the full mark when you remove this plate you will loose about 1 gallon of oil , If your tractor is five over full then you will loose 6 gallon . Now you could be hanging up in the rev shifter fork and that is easy to over come as when you start to lift the cover you now can tap the fork down off the shifter shaft . Yes there is a half moon key in the shaft . Now if the cover still will not come up son you have a huge problem and just a couple weeks ago another guy out west with a 1086 had the same issue . His problem was that the pin that holds the park loc pawl had worked loose and come out part way and due to the design of the rear housing would not allow the cover to come up more then about and inch . I had that same issue on a 1086 a couple years back that turned a four hour job of top cover rebuild into a 14 hour nightmare . Now as to your shifting problems and i have fixed many 706-806 shifting problems is that that little key in the rev shifter shaft over time of SLAM shifting wollows the shifter shaft out and will need a new shaft and key . The Rooster comb as you call it is really called a shifter CAM , they can ware BAD . You could also have broken and missing roller and a missing detent spring . The cover is more then likely wore out and both the main shifter shaft that goes into the cam has lots of sloop and play that needs to be addressed . The rev. shifter arm the TEE shaped shaft more then likely has lots of ware along with the hole up thru the top cover that needs work or a new top cover needs to be bought . What all starts these problems is due to hard shifting where they become hard to get out and back in gear and now we start SLAM SHIFTING the tugging and jerking on the shifter . This is caused by the clutch getting out of adjustment on ALL the linkage , loss of free travel, trans brake out of adjustment and the biggie the DUMP VALVE . When ya have everything adjusted correctly they will shift with two fingers . And due to age and extensive field testing over the years ya can't adjust them by the book . I have covered my way of doing this many times over and can be found in this sites archives .
Click to expand...

Thank you Sir. So what you are saying, is the steering column and all need to be removed. Here I was hoping I could just remove the verticle shaft inside the tower and fix it that way....
 
And so we are talking about the same thing. What I was calling the "Rooster Comb" is what keeps the Parking Prawl from being engaged while in gear, directly below the shifters.
 
NO what keeps the park loc from engaging is the linkage , ya can put them in gear with the park loc on and once off and in gear ya can't drop the park loc , that is controlled on the right lower side of the dash support where the shafts come down from the top of the dash . . The shifter cam does just what it is suppose to do and that is shift gears . Now on some 06-66 tractors they have been upgraded to the spring loaded park loc , if it was thru my shop then that was done as No I H tractors that i bought or worked on ever left with the old style over center park loc. To remove the range trans cover it easy normally , remove the deck plate , remove any hdy lines running over top of it unhook the park loc linkage block the park loc UP with a 1/2 nut so it is up on the 3/4 of and inch side and under the lever , remov the side cover over the rev sliding gear remove the 3/8th bolt break the gskt seal and lift straight up , like i said before sometimes ya have to tap rev shifting fork off . Some times the gskt is stuck really good and the use of two stiff bladed putty knifes is required You do NOT have to take anything apart to get the cover off other then what i have stated . If you have this tractor then get at least and I T manual and read before you do . Last thing you want to happen is drop something down in the range transmission .
 
You must log in or register to reply here.

Similar threads

M
IH 350U cam shaft gear keyway
Replies
5
Views
277
Bob M
Bob M
P
How to install rubber shifter knob on cub?
Replies
2
Views
217
Poonie
P
C
Super C input shaft seal replacement
Replies
1
Views
104
Charlie M
C
D
806 Shifter Shaft hi/low
Replies
10
Views
892
caterpillar guy
C
M
Case 446 lawn tractor
Replies
1
Views
210
Klyde
Klyde
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top