Pressure loss in cylinder due to worn piston ring or scored housing bore

Disassemble the steering gear as outlined in the unit repair manual.

Inspect the ring and the housing bore. Replace the affected parts.

Leakage at the valve rings and valve body to the worm seal

Disassemble the steering gear and replace the seals.

Leakage at the valve body or a loose fitting spool

Replace the valve.

Damaged poppet valve

Replace the poppet valve.