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60" front caster issues


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#1 lrbfan OFFLINE  

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Posted August 08, 2016 - 09:27 AM

Hello all,  I have a 420 with a 60" deck   the front casters turn sideways when backing up dragging the yard  I put new springs on with no change   any ideas  thanks



#2 HDWildBill OFFLINE  

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Posted August 08, 2016 - 09:46 AM

Welcome to GTtalk.  Some of the JD guys will be along to help you out before long.



#3 JD318420 ONLINE  

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Posted August 08, 2016 - 11:06 AM

Check for to much play (side to side all the way around (360)) between the shaft (wheel) and the cylinder (mount). If there is you may have to make a new mount or use bushings to fix it from locking due to tipping from vertical. Also make sure the springs are under some tension always.



#4 Robert Webb OFFLINE  

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Posted August 09, 2016 - 01:11 PM

The castor wheels arent supposed to be touching the ground while mowing.............only there to keep you from scalping the ground.



#5 ford4wd08 OFFLINE  

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Posted August 09, 2016 - 05:25 PM

I ran a 60" deck on a JD 400 for years. I'm pretty sure those casters are designed for ground contact, but I could be wrong. Reminds me of the finish mowers that mount to a 3 point hitch. When you reverse the wheels should turn completely around like the casters on a shopting cart. If they're hanging up sideways, try greasing the shafts they're on.

#6 JD318420 ONLINE  

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Posted August 09, 2016 - 07:06 PM

You are correct the 60 model for the 420 does does run on the ground. Been that way since it was brought and setup by the JD dealer almost 30 years ago. That why the wheels are very large compared to other decks and have bearing/grease zerks, and the mounts also have grease zerks


Edited by JD318420, August 09, 2016 - 07:08 PM.

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#7 tater195 OFFLINE  

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Posted August 09, 2016 - 07:10 PM

You are correct the 60 model for the 420 does does run on the ground. Been that way since it was brought and setup by the JD dealer almost 30 years ago

 Needs bushings. Check for bent shafts too. MOST big decks use castor wheels to adjust deck height and they are meant to touch the ground... and the parts will wear with use.



#8 JD318420 ONLINE  

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Posted August 10, 2016 - 12:00 AM

Yep, slotted shim washes, which you move from below the mount to the top of the mount and vice versa to adjust the height.






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