350B

gregjo1948 · Post by **gregjo1948** » Sun Oct 23, 2016 2:06 pm

Steers easy to the left but power steering isn't working on the right. It steers to the right but, I need to pull considerably harder. Any ideas?
Thanks, gregjo1948

jtb51b · Post by **jtb51b** » Sun Oct 23, 2016 2:25 pm

Best thing to do is to adjust the clutches and brakes per the factory service manual if you havent already. Then if you still have trouble it will be a lot easier to determine the problem. Might even find something while your in there. Its very easy to do, anyone with enough sense to be running a dozer should be able to adjust those clutches and brakes.

Jason

gregjo1948 · Post by **gregjo1948** » Sun Oct 23, 2016 2:57 pm

I believe I've got them adjusted right. I just don't seem to have any hydraulic help on the right side.

Post by **Lavoy** » Mon Oct 24, 2016 10:10 am

Check all the bushings and linkage pieces, they tend to get a lot of accumulated wear.
Lavoy

gregjo1948 · Post by **gregjo1948** » Mon Oct 24, 2016 12:23 pm

The machine turns fine both ways. The steering lever for the right side pulls harder than the left. The power assistance is not helping. The linkage seems ok because it steers fine, just not as easy as the left. With the seat off, I can see the movement of the power steering cylinder and is moving the same on the right as the left. With all that cleared up, can it possibly be there is no hydraulic fluid getting into the right cylinder?

Post by **Lavoy** » Mon Oct 24, 2016 4:52 pm

It shouldn't be lack of flow, they can be finicky about adjustment. Check that first. Then maybe change fluid, but that is a long shot.
Lavoy

mini kahuna · Post by **mini kahuna** » Mon Oct 24, 2016 4:58 pm

the power assist on some machines is a pain to get to work.....our fix years ago was to put a big guy in the seat and he didn't know the difference if it was working or not.

gregjo1948 · Post by **gregjo1948** » Tue Oct 25, 2016 1:17 am

Lavoy wrote:It shouldn't be lack of flow, they can be finicky about adjustment. Check that first. Then maybe change fluid, but that is a long shot.
Lavoy

Are you referring to the clutch/brake adjustment in the housing or adjustment on the external hydraulic cylinder?

Post by **Lavoy** » Tue Oct 25, 2016 9:29 am

Cylinder and linkage from steering levers, but of course set the clutches themselves first. Check for wear in the steering lever shaft bushings and shafts. Again, shouldn't affect it, but if badly worn, can be hard to get adjustment correct.
Lavoy

gregjo1948 · Post by **gregjo1948** » Wed Oct 26, 2016 5:42 am

I removed pressure line from the right steering booster. Momentarily started the engine and saw nothing coming out of the pressure line but gushing fluid from the booster at the pressure line port. Shouldn't I have seen fluid coming from the pressure line?

jtrichard · Post by **jtrichard** » Wed Oct 26, 2016 6:00 am

You pulled the return line

gregjo1948 · Post by **gregjo1948** » Wed Oct 26, 2016 6:48 am

jtrichard wrote:You pulled the return line

If it is the return line, why is it a high pressure hose? I'm not sure what it comes out of... some sort of reservoir/splitter that runs a line to the pump on the engine. The other line that comes out of the booster looks like a rubber gas line using a hose clamp at the fitting. I would think that is the return line.(low pressure) Is there a valve in this reservoir/splitter that would prevent the fluid to pass to the booster? The other booster works great.

Stan Disbrow · Post by **Stan Disbrow** » Wed Oct 26, 2016 7:11 am

Hi,

If that is a rubber hose, it may have delaminated internally and formed a flap which blocks the oil flow....

Stan

Post by **Lavoy** » Wed Oct 26, 2016 8:42 am

The boosters are there own valve. When the rod in the booster moves to a certain position, it uses some hyd pressure to assist in the steering. That is why if they are not dead on, they will not work as the booster does not know it should be taking some oil. The other issue is it could be a broken o-ring internally. I would pull that booster off and rebuild it.
Lavoy

gregjo1948 · Post by **gregjo1948** » Wed Oct 26, 2016 12:24 pm

Lavoy wrote:The boosters are there own valve. When the rod in the booster moves to a certain position, it uses some hyd pressure to assist in the steering. That is why if they are not dead on, they will not work as the booster does not know it should be taking some oil. The other issue is it could be a broken o-ring internally. I would pull that booster off and rebuild it.
Lavoy

Do you carry the rebuild kit for it?

JDcrawlers Messageboard

350B

350B

Who is online