Deck always spinning

[Ben_R 0]

I have a 64 704 with a 5-2322 deck. The deck works fine when the tension pulley is engaged (deck blades spin fast). However, when I disengaged the tension pulley, the deck continues to spin. The belt in the deck manual references a 7430 v-belt. I purchased a 1/2" x 28" v-belt. The belt seems to have plenty of slack, but it won't slip when the pulley is disengaged. I don't see any adjustments that can be made. It looks like the engine pulley has 3 slots. I've got the belt for the transmission in the inner slot and the belt for the deck in the outer slot (middle slot empty). Probably a different problem, but the tractor is under-powered.

 

Any ideas?

Mower Rotary 32in RD 1969 5-2322 TIPL.pdf

[Ed Kennell 38,122]

Are you missing the bracket guard item 73?

 

to the Ben.

[Handy Don 12,209]

You definitely are missing parts that stop the belt off the PTO once you cock the foot pedal.

You are also missing one of the belts on the deck.

7 hp is merely adequate assuming the deck doesn’t have any excess resistance and are not trying to tackle very heavy/wet grass or weeds. This is a finish mower.

There are a lot of bearings at play here: two on the jack shaft, two on the gear cross shaft, and two on each blade spindled. If the bearings are worn and not well lubed, they can suck up a lot of power. The gears on the cross shaft must also be ridiculously well lubed. Also blades MUST be sharp.

[Ben_R 0]

18 minutes ago, Ed Kennell said:

Are you missing the bracket guard item 73?

 

to the Ben.

 

Thanks for the reply Ed.

 

I do not have the bracket guard 73. I think my pulley is slightly different as the manual is a 69 and I have a 64. I seem to have a threaded rod/bolt with a screwdriver slot, through the pulley and a spacer and Assembly Idler Arm 70, with a nut on the back. I could take it apart, but I'm not sure how the disengaged pulley (not touching the belt) would cause the blades to continue spinning.

 

 

[Ben_R 0]

6 minutes ago, Handy Don said:

You definitely are missing parts that stop the belt off the PTO once you cock the foot pedal.

You are also missing one of the belts on the deck.

7 hp is merely adequate assuming the deck doesn’t have any excess resistance and are not trying to tackle very heavy/wet grass or weeds. This is a finish mower.

There are a lot of bearings at play here: two on the jack shaft, two on the gear cross shaft, and two on each blade spindled. If the bearings are worn and not well lubed, they can suck up a lot of power. The gears on the cross shaft must also be ridiculously well lubed. Also blades MUST be sharp.

 

Hi Don.

 

Hmmm, could you be more specific about "parts that stop the belt off the PTO". I've noticed that the belt guard sort of pinches the transmission belt off of the PTO engine pulley when the clutch is pressed. Is that what you mean? I'm not seeing parts like that in the manual I have, but I was wondering about that.

 

Yep, I know a belt is missing on the deck. On the TODO list, but acknowledged that would affect mowing.

 

Hmm. I'll look into all the bearings, greasing, and sharpening you mentioned. Thanks for the info.

[wallfish 16,994]

20 minutes ago, Ben_R said:

, but I'm not sure how the disengaged pulley (not touching the belt) would cause the blades to continue spinning.

Because that bracket grabs the belt and supports the loop when pushed and locked for disengaging the blades. The belt loop needs to slip on the engine pulley to disengage and stop the spinning. You are only seeing it not touching the pulley because that part is missing. That bracket does not touch the belt when the blades are engaged

Pretty simple to add a bracket to that pulley you have pictured.

Edited August 14 by wallfish

[Ben_R 0]

42 minutes ago, wallfish said:

Because that bracket grabs the belt and supports the loop when pushed and locked for disengaging the blades. The belt loop needs to slip on the engine pulley to disengage and stop the spinning. You are only seeing it not touching the pulley because that part is missing. That bracket does not touch the belt when the blades are engaged

Pretty simple to add a bracket to that pulley you have pictured.

 

 

Ooooohhhhhh!!!!!    I see now! Thanks. That's the issue. I can add the bracket. Thanks everyone for the help!

[ebinmaine 67,404]

1 hour ago, Handy Don said:

You definitely are missing parts that stop the belt off the PTO once you cock the foot pedal.

You are also missing one of the belts on the deck.

7 hp is merely adequate assuming the deck doesn’t have any excess resistance and are not trying to tackle very heavy/wet grass or weeds. This is a finish mower.

There are a lot of bearings at play here: two on the jack shaft, two on the gear cross shaft, and two on each blade spindled. If the bearings are worn and not well lubed, they can suck up a lot of power. The gears on the cross shaft must also be ridiculously well lubed. Also blades MUST be sharp.

 

 

[squonk 41,060]

I had a 604 as a kid that was bone stock bought brand new by my dad. The little belt guide thingy was NOT on PTO from the factory. Blade would spin slowly with the PTO off. Wasn't a big deal.

[wallfish 16,994]

If it's in the IPL then it should've been there. I'm guessing there were some extra parts leftover after assembly then as that tab is there to keep the belt from flying off,  keep it lined up with the pulleys and stop the belt spin. Highly doubtful the WH engineers would leave a belt hanging in the wind, like the original poster's first pic. You can see how easily the belt could simply fly off when the engine is running. One little bump from a stick or something and it's gone.

[Ben_R 0]

I'm back again  I understand how the bracket and the wire (Retainer Belt 85) on the other side squeeze the belt to provide slip, but I'm not sure what the bracket looks like or what it attaches to. (I can see part of the bracket in the photos, but not the rest.) The IPL from 69 differs slightly from my 64.

 

I have a threaded rod going through a ball bearing in the pulley. I don't see any snap rings or other way to remove it from the pulley/bearing. The shaft is smooth for about an inch to act as a spacer. Then the threaded part goes through the hole in Idler Arm 70 with a nut screwed on to the back (closest to engine). I also noticed a second hole in the bar that attaches to the Idler arm. In the 704 manual it looks like that is 3933 Link ref number 59. I'm guessing that is either for other model tractors or to change the position of the pedal.

 

Could someone please either take a picture behind the pulley or better yet remove the Idler Pulley so I can see the shape of the bracket and how it attaches? I'm not in a hurry. Thanks.

[Ed Kennell 38,122]

I don't have a picture Ben, but I would simply make a bar that goes under the pulley shaft nut.

[squonk 41,060]

On 8/15/2024 at 7:32 PM, wallfish said:

If it's in the IPL then it should've been there. I'm guessing there were some extra parts leftover after assembly then as that tab is there to keep the belt from flying off,  keep it lined up with the pulleys and stop the belt spin. Highly doubtful the WH engineers would leave a belt hanging in the wind, like the original poster's first pic. You can see how easily the belt could simply fly off when the engine is running. One little bump from a stick or something and it's gone.

The OP's pic is exactly how are 604 was. Nothing to keep the belt on. and I know my Father wouldn't have taken it off.

 

 

My 857 came with the little bracket thingy to keep the belt on. 

 

 

Edited August 17 by squonk