A pressure loss due to a worn piston ring or a scored housing bore

Disassemble the steering gear and replace any affected parts. Refer to Integral Steering Gear Disassemble .

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

Disassemble the steering gear and replace the defective seals. Refer to Integral Steering Gear Disassemble .

Leakage at the valve body or a loose fitting spool

Replace the valve.

Damaged poppet valve (TRW Ross power steering gear)

Replace the poppet valve.