Ford 4630 power steering

Discuss your favorite brand and how to fix it.
User avatar
kenny thomas
GURU
GURU
Posts: 7876
Joined: Sun Nov 16, 2008 7:16 pm
Location: SW tip of Virginia

Re: Ford 4630 power steering

Postby kenny thomas » Mon Jun 11, 2018 9:34 pm

chevytaHOE5674 wrote:Also on the pump gear behind the nut there is a keyway. If you still have the pump off now is an easy time to check it.

Very good advice. Yes I still have the pump off but went as far as I felt safe until I ask for advice, I will check more tomorrow night.
0 x
My thoughts only, don't bet the farm on them. KT

User avatar
kenny thomas
GURU
GURU
Posts: 7876
Joined: Sun Nov 16, 2008 7:16 pm
Location: SW tip of Virginia

Re: Ford 4630 power steering

Postby kenny thomas » Mon Jun 11, 2018 9:36 pm

chevytaHOE5674 wrote:Just spinning the pump by hand it will probably pump even if the shaft sheared as there is no load on it. Checking the gears in the timing cover is easy take a small bar or screw driver and try to rotate them, they shouldn't move unless the engine turns over.

First thing i would do is pull the relief valve out and make sure its clean and nothing is stuck in it.
Second thing is pull off pressure hose and bump the key to see if it pumps anything
Third if no pumping, pull pump apart and check for internal failure.
If it's pumping then I would check to make sure the steering cylinder didn't come apart internally.
If pump is pumping and cylinder is good then orbital valve is the last and most expensive piece.

The steering wheel will turn around and around as the "stops" you feel normally are the cylinder bottoming out.

Where is the relief valve?
0 x
My thoughts only, don't bet the farm on them. KT

chevytaHOE5674
Rancher
Rancher
Posts: 519
Joined: Tue Dec 11, 2012 2:40 pm
Location: Western UP, Mi

Re: Ford 4630 power steering

Postby chevytaHOE5674 » Mon Jun 11, 2018 9:48 pm

Go to messiks or new holland and look up the exploded diagram for the pump it will help you with disassembly and identification.

Generally when the orbital valves fail they won't just quit. They will steer left and not right, or slow to respond, or not center, or steering will drift, etc.
0 x

chevytaHOE5674
Rancher
Rancher
Posts: 519
Joined: Tue Dec 11, 2012 2:40 pm
Location: Western UP, Mi

Re: Ford 4630 power steering

Postby chevytaHOE5674 » Mon Jun 11, 2018 9:50 pm

There isn't anything "magic" in a gear pump like that so don't be afraid of taking it apart. Just keep everything organized and clean.
0 x

User avatar
kenny thomas
GURU
GURU
Posts: 7876
Joined: Sun Nov 16, 2008 7:16 pm
Location: SW tip of Virginia

Re: Ford 4630 power steering

Postby kenny thomas » Mon Jun 11, 2018 10:04 pm

chevytaHOE5674 wrote:There isn't anythi8ng "magic" in a gear pump like that so don't be afraid of taking it apart. Just keep everything organized and clean.

Thanks. Gonna rain for a week so i got time
0 x
My thoughts only, don't bet the farm on them. KT

wbvs58
GURU
GURU
Posts: 3887
Joined: Sun Mar 20, 2011 12:45 am
Location: S.E. Queensland, Australia

Re: Ford 4630 power steering

Postby wbvs58 » Tue Jun 12, 2018 3:59 am

I can't help at all but interesting information here, I'm starting to picture how my old Kubota power steering works so might come in handy some day.

Ken
0 x

User avatar
jltrent
GURU
GURU
Posts: 2172
Joined: Sun Aug 25, 2013 9:04 pm

Re: Ford 4630 power steering

Postby jltrent » Tue Jun 12, 2018 7:16 am

Kenny, Lawson's has a nice M7060 4 by 4 with cab, I bet they would give you a good trade in on yours. As you know those cabs are nice......... :D
0 x

User avatar
kenny thomas
GURU
GURU
Posts: 7876
Joined: Sun Nov 16, 2008 7:16 pm
Location: SW tip of Virginia

Re: Ford 4630 power steering

Postby kenny thomas » Tue Jun 12, 2018 7:23 am

jltrent wrote:Kenny, Lawson's has a nice M7060 4 by 4 with cab, I bet they would give you a good trade in on yours. As you know those cabs are nice......... :D

I like the Ford 4630 better than my cab tractor. But yes a cab is nice.
0 x
My thoughts only, don't bet the farm on them. KT

hurleyjd
GURU
GURU
Posts: 3625
Joined: Thu Sep 07, 2006 9:52 am
Location: Yantis, Texas

Re: Ford 4630 power steering

Postby hurleyjd » Tue Jun 12, 2018 7:49 am

I think that I would look at all of the steering wheel and its connections on top of the power steering motor. Could be a pin sheared splines wore out a shaft broken and maybe the insulator on the shaft has broken.
0 x

User avatar
greybeard
Mentor
Mentor
Posts: 16695
Joined: Thu Jul 05, 2012 5:51 pm
Location: Cleveland Tx

Re: Ford 4630 power steering

Postby greybeard » Tue Jun 12, 2018 7:59 am

Those pumps are pretty bulletproof. The drive gear is held from free spinning by a woodruff key. I have one on a 3600. For those unfamiliar with them, the pump, reservoir and filter, as well as 2 valves are all in one self contained unit. When you open the fill cap, with the engine running, you can see the fluid streaming out of the filter if everything is running right.
Here's what the Ford 4630 pump and other steering parts should look like:
Image
Image

Even if the piston seals on the steering cylinder are blown, the size of the piston itself will have offer some resistance to flow in the bore.

There is also a regulator valve in the drive motor--the part up under the dash below the steering wheel, and the rotating drive motor parts are held to the steering wheel shaft with a drive pin.
The 2 sudden onset appearing problems that come from this are usually :
1. The drive pin (#6)that holds the shaft is sheared.
2. The regulating valve spring (16) is broken or the valve (20) is stuck open.

Image
Image
0 x
"For evil to flourish, all that is required is for good men to do nothing" Burke

It ain't easy being a used cow salesman.

Covet Not!

User avatar
greybeard
Mentor
Mentor
Posts: 16695
Joined: Thu Jul 05, 2012 5:51 pm
Location: Cleveland Tx

Re: Ford 4630 power steering

Postby greybeard » Tue Jun 12, 2018 8:05 am

BTW, that whole pump is less than $300 at http://www.fordtractorpart.com/ford-pow ... -prd1.html
0 x
"For evil to flourish, all that is required is for good men to do nothing" Burke

It ain't easy being a used cow salesman.

Covet Not!

User avatar
kenny thomas
GURU
GURU
Posts: 7876
Joined: Sun Nov 16, 2008 7:16 pm
Location: SW tip of Virginia

Re: Ford 4630 power steering

Postby kenny thomas » Tue Jun 12, 2018 8:14 am

greybeard wrote:BTW, that whole pump is less than $300 at http://www.fordtractorpart.com/ford-pow ... -prd1.html

Darn, but I wanna fix it for $3.
1 x
My thoughts only, don't bet the farm on them. KT

User avatar
greybeard
Mentor
Mentor
Posts: 16695
Joined: Thu Jul 05, 2012 5:51 pm
Location: Cleveland Tx

Re: Ford 4630 power steering

Postby greybeard » Tue Jun 12, 2018 8:16 am

kenny thomas wrote:
greybeard wrote:BTW, that whole pump is less than $300 at http://www.fordtractorpart.com/ford-pow ... -prd1.html

Darn, but I wanna fix it for $3.


Ya can't hide money I guess...
I usually shoot for spending 1/2 that.....
1 x
"For evil to flourish, all that is required is for good men to do nothing" Burke

It ain't easy being a used cow salesman.

Covet Not!

User avatar
jltrent
GURU
GURU
Posts: 2172
Joined: Sun Aug 25, 2013 9:04 pm

Re: Ford 4630 power steering

Postby jltrent » Tue Jun 12, 2018 8:36 am

kenny thomas wrote:
jltrent wrote:Kenny, Lawson's has a nice M7060 4 by 4 with cab, I bet they would give you a good trade in on yours. As you know those cabs are nice......... :D

I like the Ford 4630 better than my cab tractor. But yes a cab is nice.


I agree as I wish I could get a new 3600 just like the one I have (No EPA crap on it) it is my favorite. Interested in what the problem is with yours as it might come in handy for others. Good info GB as that spring might be something to check in on. I have put grease in my steering column on my 3600 before as it didn't seem to hurt.
0 x

chevytaHOE5674
Rancher
Rancher
Posts: 519
Joined: Tue Dec 11, 2012 2:40 pm
Location: Western UP, Mi

Re: Ford 4630 power steering

Postby chevytaHOE5674 » Tue Jun 12, 2018 8:38 am

Let us know what you find. In all the Fords i own and have worked on over the years i've never had any issues with the orbital valves, it's usually a pump failure of some kind be it the keyway or shaft breaking.

Also you will still see oil circulating in the resivour if the pump is good even if the orbital valve and steering column was completely removed from the sytem.
0 x


Return to “Trucks, Tractors and Machinery”

Who is online

Users browsing this forum: No registered users and 4 guests