Cat D3B Steering Clutches Ser# 23y0467
Posted in the Caterpillar Forum
#1 Mar 15, 2012
I have a D3B dozer and the service manual that came with the dozer is not for this dozer. It starts with 23y1 and up.
My problem is the steering clutch for the right side is not working. The service manual that I have shows adjustments but they don't look anything like what I am looking at.
When I bought the dozer last spring the owner told me he just had new clutches and brakes installed. Of course that is his tell.
Can someone tell me if there is a way to make adjustments on this unit.
The only way you can turn it to the right is go all the way down on the brake which should not be.
#2 Mar 15, 2012
Hi...post an e-mail address and I'll send you the adjustment instructions complete with picture diagrams that have numbered parts. This is directly from the Cat Shop Manual. Check out this link for inexpensive steering clutch parts, if you need them :)
#3 Mar 15, 2012
Thanks Ken. [email protected]
#4 Mar 22, 2012
Made the adjustments and still no steering. Today I am going to try to remove the cover and see if I can see anything.
Pulled the cover on the right side and in the bottom there is about an inch of water took dry vac and got it out. The person that had put the new clutches in left out 4 bolts and that let the water in.
There is a piston that has adjustable threads on it but I don't have anything that shows how this is suppose to work or make adjustments. Anyone ever made any adjustments?
I think the problem is with the piston not releasing the clutch. The clutch does not slip you just have to stand on the brake to get it to turn to the right.
The arm that the cyl. moves acts like it is stuck. I don't know how hard it should be to move but I applied quiet a bit of prssure and it does not move either way.
#5 Mar 22, 2012
The threaded piston is the "steering clutch control valve". The threads allow you to adjust the clearance between the cam & roller. Look at the left side, which is working properly. See where the piston is adjusted at, and how tightly it pushes against the roller. Then watch how far the piston travels when you apply the brakes on that side.
Compare the adjustment & length of piston travel on the left side to the right side. Adjust the piston on the right side until it performs the same as the left one. Hopefully this will solve your problem!
#6 Mar 24, 2012
I think I have found the problem with the steering. Where the water was in the bottom of the compartment it got up to the brake drum and got water and oil on the brake lining. When you push on the steering for the right side the brake does not grip it tight enough to turn. I am going to spray some brake cleaner on the brake lining and try to get most of the oil off.
#7 Oct 3, 2016
I have a Db3 about a 1984 model. Steers with pedals . It is stopped steering . Still steers a little to the right almost nothing to the left. Checked the linkage appears good. Cams on the valves appear to be pushing in the pins seem to look good. Any Ideas? Could it be the valves? I Hope? Or do I need to replace the Clutches. If so do you have instructions on how to do this.
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