5 ton power steering pump issues?

[kstate90]

Working on building another fire truck for our district. We got a M813 super single 5ton. It wants to blow fluid out of the breather. From reading on here it apparently has an internal leak that is letting pressurized oil into the reservoir. How hard is it to rebuild one of these or is it simpler to just buy a remaned pump. Thanks.

 

[Floridianson]

Just make shure it is not over filled. They hate that and I run all mine on the low end of the stick. The mark on the stick for full is to much.

 

[kstate90]

If it isn't completely full you have no power steering. I have an Eaton in my LN9000 that I have had for over 10 years and it will still pump when the oil is below the filter. This one quits pumping when you can just see the top of the filter. It is pumping the oil out like the reservoir is pressurized. There shouldn't be any pressure in the reservoir.

 

[Autocar]

Both of my 800s blew fluid out. Keep the level at the low end of the dipstick and it stops puking.

 

[OPCOM]

Now is a good time to mention the fluid. Strangely it says oil.. not ATF and not power steering fluid.