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Re: 4020 powershift fluid debris


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Posted by Bob on June 11, 2016 at 12:39:08 from (64.255.159.192):

In Reply to: 4020 powershift fluid debris posted by northvale - pa on June 11, 2016 at 12:18:53:

Debris like that could be either from lined plates in the powershift, or brake linings from the brakes at the wheels.

Either way NOT good. Metal filings will only get worse because parts intended to have lining on them are now running metal-to-metal

Might as well start by having a look at the brakes.

BTW, the gauge doesn't indicate "transmission power", but rather operating oil pressure for the powershift transmission, used to engage the clutches and "brakes" inside the transmission used to select various speeds.

If it shows less pressure in certain "gears" that will point to which individual parts in the transmission are failing.

There's a chart in the SM showing which clutches or brakes are active in each "gear".

(Just to clarify we are talking about two different
brakes" here, the "service brakes" at the wheels and "brakes" used to lock certain parts of the planetary transmission to achieve the desired speeds/"gears".)


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