Jump to content

Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors

Sign in to follow this  
dav

fdt hi-lo

Recommended Posts

dav

been a long time since I have had to mess with the hi-lo on the landlord. i'm not sure if the hi-lo is stuck between ranges or the trannie is stuck between gears.

I have the set screws removed, 2 of them, but the unit doesn't slide off the shaft. is there a third set screw? and will the unit come off without removing the tire?

there was only one cup on the shifting yoke. i'm not certain if there ever was a second one; seems to me I discussed the cups in this forum a few years back. the unit never did go from hi to low easily and never with the motor running.

thanks for any help.

Share this post


Link to post
Share on other sites
steve-wis

Dav,

I don't think you can get a hi-lo stuck between hi and lo, but if you did it would free wheel, not lock up. The two set screws are all that hold it to the shaft. If it won't move it may be rusted on, or the key might be holding it up. It is a woodruff (half-moon) key, and they can roll in the keyway so one end is pushed up at the pulley and this may make it hard to get it off, especially if the end of the key might get into the hole that the set screw is in. I would completely remove both set screws and look into the holes and see if there is an indication of a problem that way. If not, PB blaster the daylights out of it, let it soak some, then try tapping it on, then prying it off, back and forth and see what happens.

You really should have both of the plastic wear parts for it to shift right, with only one I would think it is binding it when you try to shift. My hi-lo always shifted ok, but it might take just a bit of rocking the tractor by shifting your weight forward and back while shifting.

Hope this helps.

Steve

Share this post


Link to post
Share on other sites
dav

I have both set screws out. it may be that with the wheel still on, i'm just not getting the right angle or leverage to get the unit off. Saturday coming I will pull the wheel and have at it (I get home in the dark and the landlord is beyond the reach of my extension cords for lighting)

frankly, I am hoping it IS the hi-lo because the alternative is a trannie problem, which could be much more difficult. I think I will go looking for zippo's vid re the bent screwdriver fix, just in case.

Share this post


Link to post
Share on other sites
rokon2813

Hi lo's will lock up between gears. Usually when the drive pulley has slid a little. Before you take it off,put a couple screwdrivers between the unit and the pulley, and GENTLY pry to see if the pulley moves away from the housing.

A couple times a year I have to reset mine. The set screws loosen and when I try to shift the pulley will move a little with the unit. With the limited throw of the handle, the movement of the pulley will not allow the unit to completely shift.

Share this post


Link to post
Share on other sites
rokon2813

borrowed picture.Even if you find it is the problem I described.It won't come off the shaft unless the 2 top bolts are removed from the transmission.If it has always shifted "stiff" I would recommend taking it off and apart, clean out the old grease and reassemble with new. The grease gets very sticky and thick if it is old.Also, it should not have a half moon key. that shaft should have a standard key about 1" or 1 1/2" long.

hi lo.jpg

57e062683f51a_hilo.jpg.e08384b742f6ae85335cecae88e29702.jpg

Share this post


Link to post
Share on other sites
rokon2813

No confusion Steve.

I have zero experience with the small frame unit, so I will likely remember what you said in case I ever run across one.

I just related what I have experienced with the large frame hi lo

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this  

  • Who's Online (See full list)

    • AllisChalmers716
    • PGL
    • AC710
    • Tired Iron
    • CarlH
    • SmilinSam
  • Today's Birthdays

    1. Trevor Hostetter
      Trevor Hostetter
  • Recent Status Updates

    • Dean McFadden

      Dean McFadden

      Good morning peeps! I’m always searching for helpful information with my AC collection. Hope to find out new information and pass on my own experience in restoration. Here are some pics of my babies. I’m still looking for front rims for the 410 so yesterday I put the 310 wheels on took it for a drive. Working pretty good but still needs some carb work. Gotta get the 310 running next. Have a great day!😁
       

      · 1 reply
    • thedaddycat

      thedaddycat  »  SmilinSam

      It's in pretty sad shape, but yes I have a yellow plastic cap that I'm fairly certain is what you need. PM me your details and I'll get it out to you.
      · 0 replies
  • Adverts

×