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Discussion Starter · #1 ·
Moving the lever does nothing, and my brush hog is 'stuck' in the all the way down position. I have replaced the main filter, and still nothing. I know there is another 'suction' filter on this tractor, but I can't seem to find it's location (google has nothing lol)
I have a local 'tractor guy' who advised my of the issue, but I can never track him down to find out where this otherh filter is, and can't wait any longer to get this fixed. It's been 2 months, and I have lots of work to do with my new box blade (plus I've had the boxblade for 2 months, I'm just DYING to use it lol)
BTW, I know almost less than nothing about this tractor (year, open/closed system etc) it came with the house/land lol

THANKS!
 

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I found these in JDP, I hope it helps some. Learning to use www.jdparts.com is invaluable with an older machine, and its free:

Line art Vehicle Auto part Drawing


FILTERS
CartKEYPART NO.PART NAMEQTY TRACTOR SERIAL NO.REMARKS
1AR75603FILTER ELEMENT1(TRANSMISSION)
2AR50041FUEL FILTER1(FUEL)
3T19044OIL FILTER1(ENGINE)
4AT20728FILTER ELEMENT1-190319(AIR)
AR84228FILTER ELEMENT1190320-(AIR)
5AE31724FILTER ELEMENT1(AIR)





Cylinder Line art Auto part

TRANSMISSION OIL FILTER

CartKEYPART NO.PART NAMEQTY TRACTOR SERIAL NO.REMARKS
1R34733WASHER1
2AR75603FILTER ELEMENT1(DOES NOT INCLUDE R34733)
3R32507SNAP RING1
4L29251RETAINER1
5R394RO-RING2
624H1227WASHER117/32" X 13/16" X 0.060"
7L29252COMPRESSION SPRING1
8L29250COVER1-298678(SUB T31170, F3171R AND L40568, THIS APPLICATION)
9L29253SCREW1
10T31170COVER1298679-
CartKEYPART NO.PART NAMEQTY TRACTOR SERIAL NO.REMARKS
11F3171RO-RING1298679-
12L40568PIPE PLUG1298679-1-1/16"
 

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I would think if you had a filter or restriction problem that the lift might rise slowly or be jerky when raising. If you aren't getting any response when moving the rockshaft lever have you checked the linkage? Do you have other hydraulics to test their functionality? I would think the power steering is using the same suction as the rest of the hydraulics so I ask is it working correctly? I would start by checking out all the external linkage first, I would unhitch the mower and unpin, remove the hitch linkage so that you can work on this safely.

I just had my 2009 4520's rockshaft fail and have only had the time to get it home and remove the linkage. Don't feel alone.:empathy3:
I would recommend you get a service manual and read up on the operation and adjustment of the rockshaft linkage for starters.:read
 

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Discussion Starter · #4 ·
I won't lie...I gave in, and dropped it off at the 'tractor guy's' place. I drive tractor/trailer, and maintain 60 acres...so my time is rather limited. I've just decided I'm going to befriend the 'tractor guy' to learn a little more abouttractor hydraulics. Mechanics I know, and understand the concept of hydraulics, I just need to see how it applies to my tractor. I will update everyone when it gets fixed.
 

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The "other suction filter" is a screen inside the transmission case just ahead of the rear axle. I am surprised kennyd did not find it in JDparts and post a picture.
 

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OUCH! That means splitting the tractor. Might be more than its worth to fix. Did they give you an estimate?
Got a painful call yesterday...looks like the transmission oil pump is dead
 
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