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Old 12-11-2010, 09:20 PM   #1
425Forever
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Default Mower deck removal on a JD 425...

Can someone please give me a step-by-step set of instructions on how to remove a 60" mower deck from a '92 JD 425? I need to take the deck off in order to move the tractor back to VA and have never had it off. Thanks.
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Old 12-12-2010, 05:53 AM   #2
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Default Re: Mower deck removal on a JD 425...

Start engine and raise the mower deck all of the way up.
Dial deck knob to lowest setting.
Turn your gauge wheels to the side.
Turn steering wheels a 1/4 of turn to the left.
Lower your deck all of the way down.
Pull your j pins and raise the arms up and lock the arms in place with the deck knob.
Slide the collar back off of the PTO shaft and lay across the top of deck.
Pull and swivel the front coupler and remove from deck and tractor frame.
slide deck out from right side of tractor. Thats how my 1997 worked.
The end. slkpk
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Old 12-12-2010, 06:50 AM   #3
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Default Re: Mower deck removal on a JD 425...

Thank you for the info slkpk. I have a technical manual but haven't found any mower deck removal/installation instructions. I wish JD would put this info in the operators manual. I do have a copy of that and printed it out.
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Old 12-12-2010, 07:11 AM   #4
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Default Re: Mower deck removal on a JD 425...

Turn your steering wheel fully to the left and remove the mower from the right hand side. Pull the pins on your gauge wheels so the deck sits as close to the concrete as possible. Make sure your tires are fully inflated also. The AWS models have less ground clearance so the gear box will catch on the mower lift arms. Though it's not neccesary if you have a floor jack handy you might lift the back end a little to make the job less frustrating since you haven't done it before.
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Old 12-12-2010, 08:39 AM   #5
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Default Re: Mower deck removal on a JD 425...

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Originally Posted by 425Forever View Post
Thank you for the info slkpk. I have a technical manual but haven't found any mower deck removal/installation instructions. I wish JD would put this info in the operators manual. I do have a copy of that and printed it out.
They are probably in the deck operator's manual, rather than the tractor's.
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Old 12-12-2010, 08:40 AM   #6
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Default Re: Mower deck removal on a JD 425...

Quote:
Originally Posted by 425Forever View Post
Thank you for the info slkpk. I have a technical manual but haven't found any mower deck removal/installation instructions. I wish JD would put this info in the operators manual. I do have a copy of that and printed it out.
The mower decks came with their own operators manual, that’s why you didn’t find the instructions in the Tractor manual. Slkpk’s instructions are probably more detailed than what came in the manual.
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Old 04-01-2014, 10:26 AM   #7
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Default Re: Mower deck removal on a JD 425...

All right, the newb is resurrecting a super old thread. Better than starting a new one, right?

I got my deck off my 425 to install a 3 point hitch. All of that went really well, except for one step.

How, exactly, do I secure the lift arms in the fully upward position? I know I'll need to disconnect them from the hydraulic system, otherwise they continue to raise and lower along with the hitch, exposing themselves to damage. I can see the attachment on each arm that connects it to the hydraulic system, but how do I then secure the arms in the upward position? The deck knob mentioned above doesn't seem to have much effect on anything.
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Old 04-01-2014, 10:49 AM   #8
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Default Re: Mower deck removal on a JD 425...

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Originally Posted by InspectorFowler View Post
All right, the newb is resurrecting a super old thread. Better than starting a new one, right?

I got my deck off my 425 to install a 3 point hitch. All of that went really well, except for one step.

How, exactly, do I secure the lift arms in the fully upward position? I know I'll need to disconnect them from the hydraulic system, otherwise they continue to raise and lower along with the hitch, exposing themselves to damage. I can see the attachment on each arm that connects it to the hydraulic system, but how do I then secure the arms in the upward position? The deck knob mentioned above doesn't seem to have much effect on anything.
You should not need to disconnect anything. There is a threaded rod on the left side of the hitch as you are looking at it from behind, raise the hitch & turn this rod until the hitch stays all the way up. This rod is to control the depth of the hitch. The 3PH is controlled with the same cylinder as the deck.
Maybe someone else will post a picture of it.
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Old 04-01-2014, 10:52 AM   #9
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Default Re: Mower deck removal on a JD 425...

I was probably unclear.

I meant the two arms that raise and lower the mower deck.

If I detach them from the hydraulic system, they just hang loose.

If I leave them attached, they are definitely going to strike something on the ground.

How do I secure them in their highest position?
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Old 04-01-2014, 11:06 AM   #10
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Default Re: Mower deck removal on a JD 425...

Raise the arms with the hydraulics, then wind the height adjustment knob (the one right in front of the seat) all the way to the end (so the depth stop is all the way up).
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Old 04-01-2014, 11:09 AM   #11
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Default Re: Mower deck removal on a JD 425...

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Originally Posted by Diesel Powered View Post
Raise the arms with the hydraulics, then wind the height adjustment knob (the one right in front of the seat) all the way to the end (so the depth stop is all the way up).
Ugh. I think my height adjustment knob may be out of whack, then. It doesn't seem to do anything at all, either to the arms or to the little meter next to it.

I'm about to head to sleep (night shift guy) but I'll report back after I've had a chance to get under the machine.
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Old 04-01-2014, 11:24 AM   #12
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Default Re: Mower deck removal on a JD 425...

Sorry I misunderstood.
I used to have a 455 & I thought it showed somewhere in the owners manual that there was a way to lock those up but I am not sure. You may be able to download a manual online if you don't have one.
Did your depth control for the mower deck work before with the deck on? I remember having trouble with mine once on the 455 but I just turned it up & down a few times & it seemed to take hold.
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Last edited by JJW; 04-01-2014 at 11:34 AM.
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Old 04-01-2014, 12:18 PM   #13
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Default Re: Mower deck removal on a JD 425...

Since I started this thread, I might as well chime in. In order to secure the mower draft arms up out of the way, set your height control all the way up and lift the arms up all the way with the deck lift control lever (as others have said). Then if you look under the tractor, about in the middle of the draft arms, there should be "J" pins in the frame that fit into a nearby hole on the draft arms. Insert the pin in each hole of the draft arm, and that will hold them up out of the way.

I do this every spring when I attach my 42" hydraulic tiller in order to keep the draft arms out of the way.

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Old 04-01-2014, 04:08 PM   #14
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Default Re: Mower deck removal on a JD 425...

425FOREVER
Thanks
That is what I was trying to remember. I knew there was something about that in my 455 manual.
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Old 04-01-2014, 07:07 PM   #15
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Default Re: Mower deck removal on a JD 425...

I'll try to attach a photo of what I see when I look at the draft arms.

I get what you're saying but I'm not sure where the j-pins would be (I assume they would look similar to the ones you pull the remove the deck itself?).

Also, what about the actuators that are still attached to the hydraulics? Do they just sort of rotate freely?

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