HOW TO: Adjust the Pressure Relief Valve (PRV) on the MF GC 1705/10/15/20

[Dmacleo]

Try here....

Hydraulics | www.surpluscenter.com

Dale

thanks
Surplus Center S41-2
should fit if I have read everything right

edit: those purchased, 1/4 hose and single 5k psi liquid filled gauge ordered. gauge set for plows/bobcat will be sep order under company when needed.
many thanks to all involved here, very good info.
now wait for shipping and then test pressures. flow rate seems ok, empty from full down to full up at 2600rpm is, by mental count, 4.1 seconds which is VERY close to manufacture spec of 3.7.
just initial breakout when bucket is in loam/compost pile is issue. tilt and reverse few inches helps but suspect (by looking at adjust screw) this has never been checked and I may be on low side

 

[cglaser104]

I ordered a liquid filled gauge and couplers from kensboltonhooks.com

He seemed to have fair prices and enough of what I needed for my GC

 

[Dmacleo]

I ordered a liquid filled gauge and couplers from kensboltonhooks.com

He seemed to have fair prices and enough of what I needed for my GC

EDIT: looked in wrong spot there when looking for gauge my fault.
I already had some items in cart from amazon anyways got gauge and hose for 30$ free shipping just added to cart and hit buy now button. as far as couplers have not had chance to pull bucket to compare to chart I printed off from his site, and since I had a known part# just went with it. bought 2 for 9$.
got his site saved and will check there for stuff for sure.

isn't it boltonhooks.com ??

 

[cglaser104]

EDIT: looked in wrong spot there when looking for gauge my fault.
I already had some items in cart from amazon anyways got gauge and hose for 30$ free shipping just added to cart and hit buy now button. as far as couplers have not had chance to pull bucket to compare to chart I printed off from his site, and since I had a known part# just went with it. bought 2 for 9$.
got his site saved and will check there for stuff for sure.

isn't it boltonhooks.com ??

It is..yes. my memory missed it by that much lol

 

[Dmacleo]

LOL been there. heck just a few moments ago LOL
wanted to make sure I was looking a correct site, thanks

 

[WranglerX]

EDIT: looked in wrong spot there when looking for gauge my fault.
I already had some items in cart from amazon anyways got gauge and hose for 30$ free shipping just added to cart and hit buy now button. as far as couplers have not had chance to pull bucket to compare to chart I printed off from his site, and since I had a known part# just went with it. bought 2 for 9$.
got his site saved and will check there for stuff for sure.

isn't it boltonhooks.com ??

Check stamping (part numbers ) on existing connectors..... NOT that there may be anything wrong with Kenny's information, but somebody here found out that MF changed coupler sizes at some new model year a few years ago...

Catalog Download | SafeWay

Dale

 

[cglaser104]

They changed later. I have 1/4" and I believe they went to 3/8" after 2017

 

[Dmacleo]

1910 psi at 2600 rpm tested on blue line.
not touching it
am more used to the DL95 with the heavier lift capacity. just got to learn how to use the dl100 correctly.

 

[cglaser104]

1910 psi at 2600 rpm tested on blue line.
not touching it
am more used to the DL95 with the heavier lift capacity. just got to learn how to use the dl100 correctly.

The DL100 is a nice heavy loader but it's shortcoming was lift capacity. If you had the pleasure of a DL95 and then went to use a DL100 it almost feels broken lol

 

[masber2000]

This is really helpful. Thank you!

 

[Skeletor]

For my first post here I just did this to my new 2022 1725 mb. I’m new to tractors and I would have never known what to look for if not for this thread. The write up was awesome. Only thing I’ll add is if you don’t have a big adjustable a 27mm wrench fits the valve perfectly.

The loader seemed weak so I got a gauge and tested it today it was 1600psi!!! So I jumped it up to 2100. I didn’t get a chance to lift anything yet as it’s about to be dark but I played with the backhoe a bit and it’s an animal now compared to what it was.

I had a pallet and stacked some split wood right off the splitter and was a bit disappointed in its lifting capacity of the split wood. This should make a pretty good difference!! Can’t wait to split some wood!!

 

[daman1]

For my first post here I just did this to my new 2022 1725 mb. I’m new to tractors and I would have never known what to look for if not for this thread. The write up was awesome. Only thing I’ll add is if you don’t have a big adjustable a 27mm wrench fits the valve perfectly.

The loader seemed weak so I got a gauge and tested it today it was 1600psi!!! So I jumped it up to 2100. I didn’t get a chance to lift anything yet as it’s about to be dark but I played with the backhoe a bit and it’s an animal now compared to what it was.

I had a pallet and stacked some split wood right off the splitter and was a bit disappointed in its lifting capacity of the split wood. This should make a pretty good difference!! Can’t wait to split some wood!!

Thats odd because MF has some of the highest settings for hydraulics I've seen,,my new 1723 tested 2000psi on the dot, spec Is around 1900 I believe.

You do know you violated your warranty any problems they can/will deny you.

 

[kennyd]

Thats odd because MF has some of the highest settings for hydraulics I've seen,,my new 1723 tested 2000psi on the dot, spec Is around 1900 I believe.

You do know you violated your warranty any problems they can/will deny you.

How can violate the warranty by bringing it up to the specs?

 

[daman1]

How can violate the warranty by bringing it up to the specs?

They will say "it's where it supposed to be" and that it's been tamperd with, trust me

 

[cglaser104]

There is usually a paint pen mark across the adjustment screw and the relief valve body that would no longer line up indicating it's moved or been adjusted. They would then check work to verify that it was adjust above spec and if they felt that it was. Void any warranty.

 

[WranglerX]

MY 1715 spec at 1920PSI....

 

[Skeletor]

I just brought it back to spec. If I have any issues and they say I voided it it is what it is and that’ll be my last dealings with that dealer and brand. I dont sweat that stuff.

 

[daman1]

I just brought it back to spec. If I have any issues and they say I voided it it is what it is and that’ll be my last dealings with that dealer and brand. I dont sweat that stuff.

Your going to have that issue with any brand and dealer.

Just wait till warranty is up then your ok