D3B 23Y needed attention

[asleiman]

Nige ,
Great comment thank you for your observation , this afternoon I did just that put a chain over the spring while chasing parts.
Just a question the steel ring or sleeve that goes over the seal I found one cracked , my intuition is to replace it. does have to be replaced

 

[Nige]

If it's cracked it really ought to be replaced otherwise the chance is that the new seal could get damaged in short order.

 

[asleiman]

here is the chain , always try to be safe

 

[asleiman]

D3B Update
Hello all , Rebuild the track adjuster , assembled the track and pump it up all loo looks good,
Got back on the steering clutch , rebuild the control valve just bunch of ring. Today I checked the oil pressure in the steering clutch there is Zero pressure.
Any thoughts?. Just to answer Dave , The Roller are fine

 

[Old Magnet]

Check the pump suction strainer (bottom of transmission).

 

[asleiman]

Hello Old Magnet
Good to hear from you it has been a while , I checked the strainer on the top right of the transmission. how do you get the bottom strainer. this Dozer is D3B 23 Y 3 F 1 R

Thank you for your support

 

[Old Magnet]

What you checked is the pressure filter.
The suction strainer is at the bottom of the transmission case, either a horizontal strainer accessible from a cover plate at the back of the transmission or later models have a vertical strainer behind a cover plate on the bottom of the transmission. Will require draining the transmission.

 

[asleiman]

OK great

I will check it in the morning ,
I would like to know how to check the oil pressure properly on this machine. according to the manual , plug the gauge on the side behind the sprocket but there are plugs on top of the trans. one sit by it self on the top right side .
the manual said it has to be taking off it order to check the pressure. is that correct?

 

[Old Magnet]

The test port I know about is on the side of the steering clutch case...

 

[Welder Dave]

3F/1R trans. has a strainer and 3F/3R uses a filter. 23Y ??? Need rest of serial number to know for sure what it has but my 1986 931B (loader) 25Y1916 has a strainer on the back of the trans. held on by 3 bolts. The test ports are on the side like shown.

 

[asleiman]

serial Number: D3 B 23Y 01245
Trans Arrangement : 7G 6822

 

[Old Magnet]

The transmission pump pressure test port (B) is under the transmission cover.
Pressure should be 280 to 300 psi.

 

[asleiman]

hi magnet
here are picture of transmission bottom

 

[asleiman]

just could not see any possible place for screen

 

[Old Magnet]

I don't have a parts book for the 23Y
What I have shows transmission arrangement 7G6820 and 7G6823
This is the screen used and is typical for the 3F/1R transmission.

 

[asleiman]

you are right , the arrangement is 7G6822, this screen is the one I cleaned it on the right of the transmission.when I took it out it was dirty , and had metal shaving. today I took out the control valve insured again the roller was good and made sure the spool was clean.

Tomorrow I will install the control with steeriing clutch cover to make sure the slave cylinder if working

 

[Old Magnet]

Sorry, my bad on location. Seems you have a steering clutch control problem or pump is not producing required pressure.

 

[asleiman]

Great that is it , I cleaned that one
what I wrote above did not make sense
I will install the control valve on top steering clutch with out the cover to observe the slave cylinder in operation

 

[asleiman]

please look at item c , does it mean it has to be removed in order to check the pressure

 

[Old Magnet]

Only if you are checking the primary transmission clutch pressure.