4020 Hydraulic Oil Cooler Conversion - Opinions Needed

mtb34

Member
Anyone have any experience or opinion on converting the older style single hydraulic oil cooler to the newer style with a separate reservoir?

I saw a video of a person replacing their hydraulic pump on you tube and they seemed to not be using the reservoir.

Looking at available options.

Thanks for input.
 
(quoted from post at 07:50:59 03/30/23) Anyone have any experience or opinion on converting the older style single hydraulic oil cooler to the newer style with a separate reservoir?

I saw a video of a person replacing their hydraulic pump on you tube and they seemed to not be using the reservoir.

Looking at available options.

Thanks for input.


With the synchro version of the 4020 the old-style cooler with large header tanks OR the new style system with a small cooler and external tank is needed.

When the clutch pedal is depressed the transmission pump stops and a reserve of oil up front for the main hydraulic pump is needed to keep the hydraulics operating until the clutch is again engaged.

How long the hydraulics will continue to operate with the clutch depressed depends upon how much oil is ''leaking to sump'' internally (due to various components possibly needing attention) vs. being returned up front to the main pump.

In the video you saw the guy MAY have been working with a Power Shift 4020. The transmission pump in the PS version is constant-running, so the reserve oil supply isn't required.

I have two PS 4020's, one has the original-style cooler and the other has the newer cooler WITHOUT a reserve tank and it works just fine.

I would NOT expect that to be the case with the synchro version.
 
Thanks for the information.

I have a synchro so I would definitely need a reservoir of some type.

I am troubleshooting a oil leak up front.

I pulled the hydraulic pump and am replacing it but the hydr oil cooler is really dirty as well. I will probably have to pull it and take it to a radiator shop to have it tested for leaks. Maybe I could pressurize it with air someway as well?

I was looking into options in case I need to replace it.

Was wondering if I should try a used version of the single piece cooler or convert to the newer style cooler with separate reservoir.
 

I would start by having the existing cooler cleaned and leak checked.

If it leaks and can't be repaired a GOOD used one would certainly be easier to install and not require a bunch of additional plumbing and hose connections.

Who can predict how long a used part will last, though, might be years and years, or you could soon be dealing with the same issue allover again.
 
(quoted from post at 08:25:29 03/30/23) Thanks for the information.

I have a synchro so I would definitely need a reservoir of some type.

I am troubleshooting a oil leak up front.

I pulled the hydraulic pump and am replacing it but the hydr oil cooler is really dirty as well. I will probably have to pull it and take it to a radiator shop to have it tested for leaks. Maybe I could pressurize it with air someway as well?

I was looking into options in case I need to replace it.

Was wondering if I should try a used version of the single piece cooler or convert to the newer style cooler with separate reservoir.


It is a free advice, but if it does not leak, just pressure wash it and put it back on. They are reliable units, and it is not like they are a big deal to change if needed.
 

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