Ford 3000 3pt hydraulic issues

[speedking]

Just picked up a second Ford 3000 which has a rebuild hydraulic pump to setup as a hay mower. We mounted the mower on the 3pt and have the following 2 issues:

1. When lifting the mower, 3pt goes all the way up....there is no stopping half way, 3/4th way etc.....it just lifts as high as it can. Once lifted....3pt pulses up/down 3/4" like there is fluid pressure variances in the hydraulics.

2. When dropping the mower.....3pt drops like a rock...there is no slowly letting it down regardless of how you operate the control lever.

From the research I've done....my first step will be to peer into the hydraulic fill hole with a telescoping mirror and look see if there is fluid pouring out of the mouth of the hydraulic lift cylinder.....as a bad o-ring in the lift cylinder would explain the 3pt dropping.

Any ideas on the 1st issue where to start looking? What component(s) is/are responsible for the 3pt hydraulics lifting to a variable height?

--Sk

 

[J_J]

There should be a knob by or under the seat to turn in and out and regulate the descend speed, or stop all fluid from the 3pt cyl. . It should be able to lock the 3pt in any position.

 

[Soundguy]

Sounds like you are in draft mode, AND/OR the cam follower pin / CAM surface is completely wore out, PLUS the lift cover needs adjustment as per the alternate instructions for adjusting without the NUDAY tool in the service manual.

soundguy

 

[speedking]

There should be a knob by or under the seat to turn in and out and regulate the descend speed, or stop all fluid from the 3pt cyl. . It should be able to lock the 3pt in any position.

J.J.,

Thanks for the heads up on the Restrictor Knob....I turned it all the way out and now the 3pt drops nice and slow. Here it is:

However, it has nothing to do with stopping the 3pt at a specific position....I think the 3pt is in 'draft' mode.

--Sk

 

[Soundguy]

that's an aux service valve...

read yer owners manual...


soundguy

 

[speedking]

Sounds like you are in draft mode, AND/OR the cam follower pin / CAM surface is completely wore out, PLUS the lift cover needs adjustment as per the alternate instructions for adjusting without the NUDAY tool in the service manual.

soundguy

soundguy,

I've been doing some research the past few days and I agree with you on the cam follower pin. Currently the 3pt only works if in 'draft' mode. If in 'position' mode, the 3pt doesn't work at all. It's my understanding this is a common issue on the 3000 when the cam follower pin shears off. I've got a hydraulic lift cover gasket/o-ring kit coming along with a new cam follower pin. I'll break into it when those parts are here and see if this is indeed the case. I'm also going to muck out the hydraulic fluid reservoir, replace the hydraulic filter, and clean the sump screen.

I'll post up my findings......

--Sk

 

[speedking]

that's an aux service valve...

read yer owners manual...


soundguy

Hmmm....good to know.

I'll read the manual when it arrives. I have one coming along with the I&T service manual....

--Sk

 

[Soundguy]

soundguy,

I've been doing some research the past few days and I agree with you on the cam follower pin. Currently the 3pt only works if in 'draft' mode. If in 'position' mode, the 3pt doesn't work at all. It's my understanding this is a common issue on the 3000 when the cam follower pin shears off. I've got a hydraulic lift cover gasket/o-ring kit coming along with a new cam follower pin. I'll break into it when those parts are here and see if this is indeed the case. I'm also going to muck out the hydraulic fluid reservoir, replace the hydraulic filter, and clean the sump screen.

I'll post up my findings......

--Sk

common issue on a 3000? uh no.. it's a common issue on any of the ford hyd top covers that use a cam follower pin, right on back to the 8n.. etc.. jus t like the clutch and brakes.. it's a wear item to service.

ps... hyd resevoir is the entire back of the tractor aft of the tranny.

filter replacement have fun...

soundguy

 

[cbl12]

If you take pictures of the process would be extremly helpful to me since I will be replacing my filter in the near future. If you would share the pictures I would greatly appreciate it.

 

[speedking]

If you take pictures of the process would be extremly helpful to me since I will be replacing my filter in the near future. If you would share the pictures I would greatly appreciate it.

I have 2 of the Ford 3000s to go through the hydraulic systems on. I'll take a few photos here and there, but the process is pretty well outlined in the service manual. I'll be digging into our in the near future.....