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4020 hydraulic leak


 
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Northvale PA
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PostPosted: Tue Oct 20, 2020 4:52 pm    Post subject: 4020 hydraulic leak Reply to specific post Reply with quote

My 4020 powershift is steady dripping hydraulic oil from the cotter pin immediately behind the oil pan.
Obviously an internal leak. Any guesses as to the probably issue? And I assume it needs to be split to
fix it?

 
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Hay maker2
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Location: Western NY

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PostPosted: Tue Oct 20, 2020 5:37 pm    Post subject: Re: 4020 hydraulic leak Reply to specific post Reply with quote

It could be engine oil and it could be hydraulic oil from the transmission. What color is the oil?

If hydraulic oil, remove the kick plate where the key & light switch and make sure that there is not a oil leak in there running down inside the clutch housing as there is a good chance that the rubber boot on the disconnect rod is destroyed.
 
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Northvale PA
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PostPosted: Tue Oct 20, 2020 5:52 pm    Post subject: Re: 4020 hydraulic leak Reply to specific post Reply with quote

This is clean hydraulic oil, not black engine oil. Also, this is a powershift so there is no clutch housing.
 
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IowaJohn
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PostPosted: Tue Oct 20, 2020 5:58 pm    Post subject: Re: 4020 hydraulic leak Reply to specific post Reply with quote

Front seal clutchpack. You'll need to split it be very careful prying the clutch pack loose then take the pack apart to replace the seal. Not a bad job
 
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MikeinKy
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PostPosted: Tue Oct 20, 2020 6:44 pm    Post subject: Re: 4020 hydraulic leak Reply to specific post Reply with quote

My 4020 powershift has a clutch housing with a clutch in it. I have had the clutch out of it.
 
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wore out
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PostPosted: Tue Oct 20, 2020 8:14 pm    Post subject: Re: 4020 hydraulic leak Reply to specific post Reply with quote

CVPost-Northvale PA wrote:
(quoted from post at 18:52:48 10/20/20) This is clean hydraulic oil, not black engine oil. Also, this is a powershift so there is no clutch housing.


"this is a powershift so there is no clutch housing"

LOL!
 
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wore out
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PostPosted: Tue Oct 20, 2020 8:16 pm    Post subject: Re: 4020 hydraulic leak Reply to specific post Reply with quote

CVPost-IowaJohn wrote:
(quoted from post at 18:58:45 10/20/20) Front seal clutchpack. You'll need to split it be very careful prying the clutch pack loose then take the pack apart to replace the seal. Not a bad job


'Front seal clutchpack.'

Might just as well call it the transmission pump seal. (R34650)
 
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Tx Jim
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PostPosted: Wed Oct 21, 2020 1:52 am    Post subject: Re: 4020 hydraulic leak Reply to specific post Reply with quote

wore out wrote:
(quoted from post at 23:16:33 10/20/20)

Might just as well call it the transmission pump seal. (R34650)


I think gasket R100232(key 1) & packing(key 15) will also be required to R&R seal(key 14)
 
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Hay maker2
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PostPosted: Wed Oct 21, 2020 3:08 am    Post subject: Re: 4020 hydraulic leak Reply to specific post Reply with quote

CVPost-Northvale PA wrote:
(quoted from post at 02:52:48 10/21/20) This is clean hydraulic oil, not black engine oil. Also, this is a powershift so there is no clutch housing.


There is a flywheel with a mechanical disconnect clutch between the engine and power shift clutch pack.
 
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