Power Steering System Grunt

Steering box grunts intermittently when turning from lock to lock:

1. Is fluid level correct?
YES Go to step 3.
NO Refill or drain to correct level, bleed power steering system. Service and Repair
2. Does grunt remain?
YES Continue.
NO End.
3. Is correct low pressure hose, steering box to reservoir installed?
YES Go To step 5.
NO Install correct hose.
4. Does grunt remain?
YES Continue.
NO End.
5. Purge box by driving vehicle in figure eights in a suitable location, followed by 10 minutes normal road use.
6. Does grunt remain?
YES Contact manufacturers technical office.
NO End.