I checked mine a few months ago and it was ~ 100 PSI low, as I recall and adjusted it. Note there was a pressure difference on mine between checking the pressure at the rear remotes vs. checking at the various outputs of the loader control valve, from ~ 25 - 75 PSI lower at the valve outputs, as I recall. My factory manual specified to check the pressure at the rear remotes.
Has anyone adjusted the Loader Relief valves, or the system PSI ???
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vwnotrunning
Platinum Member
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- Central, OK
- Tractor
- jd 1050 LS I3040H. CASE SC farmall Super M
My main ( my terminology - first block the pump goes to under the tractor) relief was okay, but there is also a relief on the loader valve. Checking at the loader ports showed this relief to be about 4-500 low. Reducing the loader lift.
rwork
Platinum Member
Well, I finally got around to adjusting the relief valve on my R3039H. I was reading a tad over 2200 psi, and the manual specs 2422. Didn't take five minutes. Loosened the jam nut, then turned the allen screw about a quarter turn. Checked again, and I was at about 2400, so that was close enough for me. Tightened jam nut, done! Haven't had a chance to test the lifting capability, but the loaded does seem to respond a bit quicker.
Tbolt76
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- Nov 13, 2013
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- Raleigh, NC
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- 1958 John Deere 520, LS R4041, AC G, BCS 745
Where is this adjustment on an R4041? Looking at my manual and not quite sure where it is. Thanks.
rwork
Platinum Member
I'm not certain on the 4041, but I'd be willing to bet its the same. The relief valve is located on the loader valve, under the right floorboard. The valve is at the top. Loosen the jam nut, (19mm) and turn the center (allen wrench) abaout a quarter turn at a time (a quarter was all I needed), then tighten jam nut.
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Tbolt76
Bronze Member
- Joined
- Nov 13, 2013
- Messages
- 53
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- Raleigh, NC
- Tractor
- 1958 John Deere 520, LS R4041, AC G, BCS 745
rwork,
Great pic, thanks alot! Did you do the John Madden X and O and your cell phone?
Tom
Great pic, thanks alot! Did you do the John Madden X and O and your cell phone?
Tom
rwork
Platinum Member
Yep. "I love Brett Farve"!! Lol
rwork
Platinum Member
Have you checked your pressure to see if it is low? If so, loosen the lock nut, turn adjustment screw about 1/4 turn, check pressure.
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Without the risk of sounding stupid, I assume you turn it clockwise ?
