Massey ferguson 6490 error code 9233 - Cars & Trucks

It depends on the model and you don't tell us that. They are all listed here by model.

https://www.anglo-agriparts.com/tractor-serial-numbers/massey-ferguson-tractor-serial-numbers

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https://www.yesterdaystractors.com/

Fix your vehicle right away by clicking the link I attached MASSEY FERGuSON TRACTOR

replace the power steering control as there is a bypass occurring to the power steering ram or hydraulics in the box
talk with a power steering specialist or a massey service agent

Massey Ferguson Super 90 crop tractor

online today so far
no motor torque specs or valve adjustment info

only these links

http://www.ntractorclub.com/howtos/pdfs/Tractor-Engine-Torque-Specs.pdf

http://www.tractordata.com/farm-tractors/005/8/7/5879-massey-ferguson-super-90.html

This is a random choice for your engine.
You would really need the model and probably the serial to get the correct specs.
The Perkins Model AD3.152 engine used in Massey Ferguson 135 tractors built between 1968 and 1975 had the following torque specs.
45 hp
1211 ft pounds of torque at 1300 RPM
Max RPM was 2000

google Massey ferguson the model number will be on the motor