CAUTION: DO NOT hold valve closed for more than 5 seconds as pump damage may result.

Remove high pressure line from pump. Attach Adapter Fitting (J-5176-11) to pump. Using Pressure Gauge (J-5176-02), and Adapter (J-5176-12), connect gauge to hose.
Open valve fully and run engine until fluid reaches normal operating temperature. Check fluid level and add if necessary. With engine at operating temperature, pressure reading should be 80-125 psi (5.6-8.8 kg/cm² ).
If pressure is above 200 psi (14 kg/cm² ), inspect system for restrictions or faulty poppet valve. Shut valve on gauge then open fully 3 times while recording highest pressure obtained.
If recorded pressures are all within 50 psi (3.5 kg/cmJ(2)), pump performance is acceptable. If pressures are high and not within 50 psi (3.5 kg/cm² ) of each other, flow control valve is sticking. If pressures are constant and over 1.00 psi (7.0 kg/cm² ), but below 1350 psi (94.9 kg/cm² ), replace flow control valve and recheck.
If pump meets specification, leave valve open and turn steering wheel from stop to stop. Record highest pressure to compare with maximum pump pressure.
If pressure at both stops is not similar to maximum pressure, steering gear is leaking internally. Shut off engine, remove testing equipment, check fluid level, or make necessary repairs.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Pressure Test