The hydraulic control valve is a nine section closed center system and has one main relief valve. The main relief valve operates at 24476 kPa (245 bar) (3550 psi).
The bucket, blade, and arm section have 27000 kPa (270 bar) (3916 psi) work port reliefs. The boom section has 28999 kPa (290 bar) (4206 psi) work port reliefs.
The auxiliary section has 20553 kPa (206 bar) (2981 psi) work port reliefs.