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I have a CAT D8N DOZER.
The Steering is locked.
Can’t turn left or right, just front and back movement.
Bucket and ripper seem to be working perfectly.
Pressure Guage from all the steering pump is 4500psi
Pressure Guage from main hydraulic pump is 1000 psi.
Main pump has been replaced twice but the gauge is still 1000psi
Final drive is okay.
Please help. Any ideas?