42" 79360 Snow Thrower HELP...belt stops in snow.

[TonyBer 71]

HI, I'm running a 79360 tall Shute (the model # sticker is damaged but fairly confident I model correct) on a C160 Automatic.  This is my first year for this tractor and then I bought the snow thrower and had a knowledgeable guy install it for me properly.  The first snow we had in Pittsburgh 2 or 3 weeks ago...no issues but it was only an 1" or so.  Last night we got about 7" of snow and on the first row down the driveway it stopped throwing.  I lifted the thrower and pulled the PTO off and then back on and up in the air, its ran freely.  As soon as I get into the 7" snow (light, fluffy snow...not heavy) it boggs down and the belt stops spinning.  If I clear it and restart not in the snow, its spins fine.  I tried a few turns in the PTO rod with no success.  Is it the belt, tensioner spring or what?  The belt seems to have about 1" of play.   How do I correct/fix this?....sooner rather then later as now I have a driveway full of snow LOL.  Thanks! 

 

Edited January 17, 2022 by TonyBer
more pics

[gwest_ca-(File Mod) 11,036]

Possibly the pto is slipping. Remove the trunnion from the lever above the pto and tighten by turning the trunnion 2 turns. This applies more pressure to the clutch plate when pto is applied.

If you think it is still slipping do one turn at a time until the slippage is eliminated under load.

[TonyBer 71]

7 minutes ago, gwest_ca said:

Possibly the pto is slipping. Remove the trunnion from the lever above the pto and tighten by turning the trunnion 2 turns. This applies more pressure to the clutch plate when pto is applied.

If you think it is still slipping do one turn at a time until the slippage is eliminated under load.

Thanks...is that picture #3?  As you can see the adjustment is at the end (not sure which way applies more pressure or less?).  If I turn that moving the connector away from the PTO lever handle towards the snow thrower does that apply or lessen pressure?  That is if it is the adjustment you are talking about?  

[squonk 41,040]

Yup. It's tightened all the way. I bet if you pull that PTO pulley off you'll find a worn out clutch plate.

[TonyBer 71]

This pulley?  Big job?  Thanks!

[squonk 41,040]

Easy job. Pull the belt off and pull that pin in your picture. Remove the clip holding the PTO adjustment arm and lift it off the triangle piece. Remove the 2 bolts that hold that PTO brake onSwing the Hoop / Halo looking thingy to the rear and the pulley slides right off. Then you can see the clutch plate. 4 bolts and 2 tinny plates hold the clutch plate on.

Edited January 17, 2022 by squonk

[squonk 41,040]

The 2 nuts in this pic and the clip sticking out from under the triangle plate remove. 

 

[TonyBer 71]

Awesome thank you!

 

[pfrederi 17,681]

Snow Blower belts should be in the smaller outer pulley of the PTO

[TonyBer 71]

1 minute ago, pfrederi said:

Snow Blower belts should be in the smaller outer pulley of the PTO

I wondered that too...could this be the case of my problem.  Can I just loosen tension on spring and move it over?

 

[pfrederi 17,681]

You say the belt stops spinning.  is the PTO pulley still turning or does it stop.  if it stops PTO friction plate.  If the pulley still turns but the belt doesn't move wrong belt.. are you sure it is 69".  Actually putting belt in outer groove will make belt slippage worse. (but that is where it should be if belt is right length...

[Ed Kennell 38,036]

1 hour ago, TonyBer said:

This pulley?  Big job?  Thanks!

 

 

                      Looking at the joint line of the clutch plate/lining, The lining appears to be pretty thick and may be OK.    

 

The belt should be on the outer pulley to make the auger spin at the correct RPM.    That is not causing the belt to slip though.  The adjustment rod is maxed out and could be allowing the clutch to slip.  I would run a die on there and make another inch of threads.

What really jumps out at me is the lack of tension on the tensioner spring.   Most of the coils are closed and not applying any tension to the belt.   That spring should be shorter and streched more.

Edited January 17, 2022 by Ed Kennell

[TonyBer 71]

Ok...so the pulley stops turning so I'm looking at the PTO friction plate.  I get in the smaller outer pulley is smaller which means it would spin the thrower faster and throw further...right?  I got the belt with the used snow blower so it came with it.  I'm going to order a friction plate and new belt.  Any suggestions where to match a part number for a C-160 automatic for PTO friction plate?  Where to reference correct belt also and order?  Thanks.  

 

[TonyBer 71]

3 minutes ago, Ed Kennell said:

Here is another pic of the spring. 

 

                      Looking at the joint line of the clutch plate/lining, The lining appears to be pretty thick and may be OK.    

 

The belt should be on the outer pulley to make the auger spin at the correct RPM.    That is not causing the belt to slip though.  The adjustment rod is maxed out and could be allowing the clutch to slul.  I would run a die on there and make another inch of threads.

What really jumps out at me is the lack of tension on the tensioner spring.   Most of the coils are closed and not applying any tension to the belt.   That spring should be shorter and streched more.

 

[pfrederi 17,681]

Belt is 5/8 x 69"

[Ed Kennell 38,036]

3 minutes ago, TonyBer said:

 

Yeah, that is the picture I was refering too.    That spring does not appear to be streched nearly enough to add enough tension to the belt.     You have noted the PTO pulley is not turning and you must address that problem.   Could be a worn lining or could be lack of tension.    Do you notice any movement of the steering tower when you activate the PTO? Look for movement at the junction of the hood and tower wnhen you apply pressure to the PTO.      Sometimes the towers are bent or cracked and do not transfer the proper tension to the PTO.

[TonyBer 71]

5 minutes ago, Ed Kennell said:

Yeah, that is the picture I was refering too.    That spring does not appear to be streched nearly enough to add enough tension to the belt.     You have noted the PTO pulley is not turning and you must address that problem.   Could be a worn lining or could be lack of tension.    Do you notice any movement of the steering tower when you activate the PTO? Look for movement at the junction of the hood and tower wnhen you apply pressure to the PTO.      Sometimes the towers are bent or cracked and do not transfer the proper tension to the PTO.

Thanks Ed, the PTO spins freely and belt until engaging 7" of snow which should be easy for this machine...then it stops after about 5 seconds. 

[oldlineman 1,481]

also there is a plastic bushing on the PTO shaft where it goes through the tower, if it is not there could allow more play on the PTO linkage and might not allow enough tension to be put on the clutch face. Bob

[squonk 41,040]

49 minutes ago, TonyBer said:

.  Any suggestions where to match a part number for a C-160 automatic for PTO friction plate?  

 

@76c12091520h                 

 

[peter lena 8,588]

@TonyBer  that pto cone bearing , might be an added issue , its a needle bearing , only needing a thorough wipe out, use lucas hi temp grease on it , just enough to cover the needles , another thing noticed was the spring tensioned pulley frame , no grease or lubricants seen in those steel on steel holes , if its lubricated it works better .  also lubricate the related pto, trunnion , joint.  also lubricate the base of that chute to blower frame , super lube teflon  spray or related snow spray , there and inside chute. look and detail every intended function , when they are all working with simple ease  ,  its a neat set up , pete

[TonyBer 71]

15 minutes ago, peter lena said:

@TonyBer  that pto cone bearing , might be an added issue , its a needle bearing , only needing a thorough wipe out, use lucas hi temp grease on it , just enough to cover the needles , another thing noticed was the spring tensioned pulley frame , no grease or lubricants seen in those steel on steel holes , if its lubricated it works better .  also lubricate the related pto, trunnion , joint.  also lubricate the base of that chute to blower frame , super lube teflon  spray or related snow spray , there and inside chute. look and detail every intended function , when they are all working with simple ease  ,  its a neat set up , pete

Will do, is the bearing visible when I get the clutch plate out?  Is there a guide to show where to lubricate all?  I'll pickup some teflon spray and get some Lucas hi temp grease.  Thanks.

 

[peter lena 8,588]

@TonyBer  when i got my 36x42  single stage blower , it was a mess , everything on it worked like dragging a rock , no lubrication , solid rust , noisy bearings.   the bearing is INSIDE  the pto pulley  nose cone area , a snap ring removes , the connection link '  found this link  ,https://wheelhorsestables.com/forum/engine-tutorials/190-pto-clutch-disc-diy  great pictures , self explanatory , get back to you pete

[peter lena 8,588]

@TonyBer  when i got my 36x42  single stage blower , it was a mess , everything on it worked like dragging a rock , no lubrication , solid rust , noisy bearings.   the bearing is INSIDE  the pto pulley  nose cone area , a snap ring removes , the connection link '  found this link  ,https://wheelhorsestables.com/forum/engine-tutorials/190-pto-clutch-disc-diy  great pictures , self explanatory , get back to you pete

[squonk 41,040]

The adjustment bottomed out tells me the PO had issues with the clutch before.

[peter lena 8,588]

@TonyBer  LUCAS , X-TRA HEAVY DUTY GREASE , WALLMART . $ 7 , hi temp , 560 deg drop point , anti sling rated , polyurea rated , bombproof stuff ,  that suber lube teflon spray  is perfect on that blower chute base and inside chute for slick release, also it on your snow blade , don,t get me started , pete