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  #1  
Old 07-10-2020, 12:29 PM
Twthompson Twthompson is offline
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Default Hydraulic down pressure on mower deck
The hydraulics on my 1872 put down pressure on my mower deck which I would prefer not to do. My thinking is that the pivot is rusted/frozen and causes this to happen. I am posting a pic. Could the group please take look and let me know is this set up should allow the deck to float? Now some questions. What do the roll pins in the pivot shaft do? If the pivot is frozen/rusted, are there any suggestions for freeing it up? Thanks.
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Old 07-10-2020, 06:48 PM
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aagitch aagitch is offline
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Is that a super? By looking at the diagram, if it doesn't float then it's probably frozen/rusted. I see there's the pin for the lift cylinder where it attaches to the clevis but if memory serves there should be a pin in the other hole for the upper rockshaft arm to hit/rest against.
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Old 07-11-2020, 06:41 PM
Twthompson Twthompson is offline
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Yes it's an 1872.
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Old 07-11-2020, 06:48 PM
finsruskw finsruskw is offline
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AS clean as that unit appears to be I wouldn't think rust would be an issue.
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Old 07-19-2020, 09:35 PM
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Any idea what dealer sold that mower new? Wondering if it came from Colvard's in Durham--don't think they ever sold and 1872 but I could be wrong.
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Old 07-21-2020, 08:06 AM
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The cylinder has to be double acting cylinder. The deck is not heavy enough for a gravity down situation. Also the hydraulics are meant to be utilized by other types of attachments that may require power down.

Your deck should float on its hangers regardless.
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Old 07-21-2020, 02:34 PM
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I can not remember, but, that pin in the yellow bracket has two positions,,
one is for "float"
the other is for "down pressure"

The "float" position for the pin is just a storage location,,
so, if you can not determine which hole the pin should be in,, TAKE THE PIN OUT!! - .

With the pin out, the deck should float,, .
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Old 07-21-2020, 03:21 PM
Twthompson Twthompson is offline
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Quote:
Originally Posted by john hall View Post
Any idea what dealer sold that mower new? Wondering if it came from Colvard's in Durham--don't think they ever sold and 1872 but I could be wrong.
John, I don't know who sold it new. I bought it just a bit south of Rocky Mount, NC a bit over a year ago. Someone has swapped out the rear end. It does not have the aluminum one.
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Old 07-21-2020, 03:26 PM
Twthompson Twthompson is offline
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There are two pins. One attaches to the hydraulic cylinder. The other one is out and it still puts down pressure on the deck.
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Old 07-21-2020, 04:38 PM
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Originally Posted by Twthompson View Post
There are two pins. One attaches to the hydraulic cylinder. The other one is out and it still puts down pressure on the deck.
If so, then that bracket is jammed with dirt, rusted, or some other way incapacitated,,

Time to get out the Kroil,, and a BFH,, !!
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