Power Steering box oil help!

[rickdavis81]

M51a1 multifuel with the old style Ross system I believe. Power steering has been getting hard to turn. I’m seeing where there’s an oil level to check on the gear box itself besides the reservoir but I cant find instructions. Can anyone help?

 

[topo]

You can go to the technical manual page for 5 ton click on the m39 lubrication

 

[rickdavis81]

I had found that earlier. Was hoping for a clearer pic of the fill plug. Sold the truck earlier today and the new owner is having p.s. issues. It has a new pump on it but I didn’t know about the gear case level. I feel pretty bad about it.

 

[topo]

It's on the top when looking down on the steering box and has a vent in it . tried to get a picture the oil filter I have is mounted to the top of my steering box

 

[rickdavis81]

Thanks that helps alot