D series Belt Replacement

[BuffaloD200 30]

Hey all, I need to install a drive belt on my 75 D180 for my snowblower.  I've looked through a bunch of D-series owner's manuals, and none seem to mention replacement procedure.  The PTO pulley is fixed, save for engaging the PTO and there is minimal movement at the snowthrower pulley. There's no idler or tensioner as far as I can tell.  Do I have to remove the PTO pulley?  That seems to be a required service item.

Same question for my 80 D200 as well really.  

 

Using the recommended 4L490W belt.

 

Thanks 

Edited October 28 by BuffaloD200
misspell

[pfrederi 17,742]

Not good pictures but there is a description....

 

[BuffaloD200 30]

That's it?  Flip the eccentric bolt over?  

I wasn't expecting rocket surgery, but I thought it would be slightly more complicated.  I'll poke around with it later.

 

Thanks for the help

[BuffaloD200 30]

This part, with the adjustable slot?

[BuffaloD200 30]

I've copied the text here, for future reference.  Those manuals can be tough to read.

 

1973-1974
Installation of Drive Belt
Remove grille from tractor.
With pivot arm eccentric (R) in position shown by dotted lines, place V-belt on tractor engine pulley (forward groove) and gear box pulley. 
To put proper operating tension on V-belt flip pivot arm eccentric (R) over center as illustrated.

Adjusting Drive Belt Tension
If additional tension is needed on drive belt, remove clevis pin (Q) from yoke of turnbuckle (S) and rotate yoke assembly counterclockwise.
To decrease tension, rotate yoke assembly counterclockwise.
Replace clevis pin and hair cotter pin and snap pivot arm eccentric (T) over center to lock in operating position.
NOTE: Proper tension on V-belt will allow approximately 1/4" deflection when firm finger pressure is applied midway between pulleys.

[BuffaloD200 30]

Still no clue what the hell I'm supposed to be doing here.  

Somebody have a real picture or video?  Hell, I'll take a line drawing.  Anything is better than that manual.

[pfrederi 17,742]

Sorry I do not have a blower for my D

 

The manual is hard to follow....

[BuffaloD200 30]

On 11/16/2024 at 11:33 AM, pfrederi said:

Sorry I do not have a blower for my D

 

The manual is hard to follow....

It sure is.  The picture is so washed out.  

 

I'm pretty mechanically inclined, but I haven't seen anything that moves the pulley.  I've got to set aside some time and really get in there.

[BuffaloD200 30]

After reviewing the manual for an IH H42/48 blower, which had significantly better pictures, and just poking around - I got the belt on.

 

But the belt tensioner still has me confused.

It appears it was originally mounted upside down.  So I flipped it according to the IH manual but now I don't know if mine is bent or not.  I know the threaded clevis bolt is (clearly bent) but the top part of the bracket has a curve, and I don't know if that is on purpose.  

 

And what I think is part T snap pivot arm eccentric doesn't line up with anything 

[BuffaloD200 30]

Ok so I've determined that my bracket is definitely bent.  I stuck it in a vise and managed to get it mostly straight.  The belt tension is way too high, the auger engages when the PTO is not.  

That threaded bolt with clevis, is that available anywhere or should I just weld something together?