Pump
POWER STEERING PUMP LEAKS1. Excessive fluid fill.
2. Dipstick missing, loose, damaged or missing O-ring.
3. Broken or cracked fluid reservoir.
4. Loose or damaged hose fittings.
5. Shaft seal not pressed flush with housing surface.
6. Shaft seal damage.
7. Rotor shaft damage, helical grooving or OD has an axial scratch.
8. Shaft bushing worn.
9. Plugged drainback hole.
10. Damaged or missing reservoir O-ring.
11. Damaged or missing outlet fitting O-rings.
12. Excessive pump assembly bracket vibration.
13. Plate and bushing reservoir seal groove damage, metal chips or foreign material in seal groove.
14. Faulty outlet fitting.
POWER STEERING PUMP NOISE, MOAN OR WHINE
1. Fluid aeration.
2. Low fluid.
3. Hose grounded.
4. Steering column grounded.
5. Valve cover O-ring or baffle missing or damaged.
6. Interference between components in pumping elements.
7. Loose or poor bracket alignment.
8. Cam contour damaged.