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cat man

new drive belt problem

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cat man

ok so i looked at some pics of a repainted C-120 automatic so id know how the belt and idler pulley all went back on but my parking brake wants to self engage and its hard to push it down to get the tractor to move im not that computer savy i tried to find a pic of it in manuals on here couldnt find one i got a 5/8 wide 84 inch belt that it calls for what did i do wrong?thanks

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squonk

How bout a picture of your new belt installed? 

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daveoman1966

The OEM belt is # 7478 and is 84" x 0.625 (5/8).  Note that an aftermarket belt may or may not be of the same quality and/or geometery to precisely fit the contours of the 'V' pulleys.   It should be routed like this...although your motion control lever may be different, depending on year of tractor.  

 

7478 BELT OEM.JPG

DRIVE BELT IDLER.jpg

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cat man
  • i have it like in the pic but its like the belt needs to stritch very little bit when its running it makes it jump into the parking brake if you try to push it down to drive it you can hear a gear raking

173791715_510486366615428_584264548091485474_n.jpg

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squonk

Belt looks too short

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cat man

its a 5/8s 84 long but yes its to tight

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squonk

Check the number on the belt itself. Sometimes they get into the wrong package.

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cat man

i did that the numbers on both match up i even tried putting my foot in the parking brake to push it down some and it still is to tight

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cat man

how or where do i order or get a wheel horse 7478 belt from  ?

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cat man

this is what i have from royal king

WIN_20210417_15_35_49_Pro.jpg

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ranger
36 minutes ago, cat man said:

this is what i have from royal king

WIN_20210417_15_35_49_Pro.jpg

I think you have to be careful with vee belts, some are measured on the O/D as yours appears to be. Some are measured on the I/D, etc, so you could have say, 3 belts, all with the same described length, but depending where the measurements were taken, they could all be different fitted lengths. The chart I looked at, which is for ‘wrapped’ mower belts, shows the ‘840’ as equivalent ’ to a ‘B82’ and an ‘860’ equivalent to a ‘B84’. So your 84” O/D should perhaps be an 84” I/D or 84” p.c.d. Measurement?

Doug.

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squonk

Wh7478 crosses to a Napa Gates 5L840W. We measured those belts at the store as 84" O.D. Measure your belt wiyh a tape measure

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JoeM
Posted (edited)

evil bay or could try an 85"

676293887_Captureebaytoro7478belt1.JPG.5718b07fb6c3722155a606b632fef408.JPG

529755738_Captureebaytoro7478belt.JPG.650f7cba9149bb0920b88a43d005e831.JPG

Edited by JoeM

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daveoman1966

Put the belt cover on...  The cover has a 'guide' on the backside to keep the belt from dropping too low...which releases it from the engine pulley to prevent 'slight' engagement.    

belt (6).JPG

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