Condition
| Possible Cause
| Correction
|
Hard Steering
| Low tire pressure
| Inflate tires to correct pressure
|
| Improper front suspension alignment
| Re-align to specifications
|
| High internal leakage (pump or gear)
| Check pump pressure; replace affected pump parts or replace complete pump
|
| Low oil level in reservoir
| Add recommended type of P/S oil to proper level
|
| Pump belt loose or glazed
| Tighten or replace belt
|
| Lack of lubricant in suspension or ball joints
| Lubricate or replace parts as needed
|
| Overcenter adjustment too tight
| Readjust to specifications
|
| Spool valve or flow control valve plugged or sticking
| Clean or replace as required
|
| Steering gear coupler to column is misaligned
| Align steering column
|
Momentary increase in steering wheel effort when turned rapidly
| Fluid level low in reservoir
| Check level; Add recommended type of P/S oil to proper level
|
| Pump belt slipping
| Tighten or replace belt
|
| High internal leakage
| Check pump pressure; replace affected pump parts or replace complete pump
|
Steering wheel surges or jerks with engine running, especially at slow speeds
| Pump belt loose
| Tighten or replace belt
|
| Low oil level in reservoir
| Check level; Add recommended type of P/S oil to proper level
|
| Engine idle too slow
| Raise idle as required
|
| Air in the system
| Check all P/S hose connections and pump for leaks
|
| Insufficient pump pressure
| Check pump pressure; replace affected pump parts or replace complete pump
|
| Flow control valve sticks
| Check valve for dirt or burrs; replace as needed
|
| Steering linkage hitting obstruction
| Locate obstruction and repair
|
| Sticky flow control valve
| Inspect for varnish or damage; clean or replace as necessary
|
Excessive steering wheel return or loose steering
| Air in the system
| Add P/S fluid to system and bleed the system; check all connections and hoses for leaks
|
| Excessive overcenter lash
| Adjust to specifications
|
| Loose steering gear mounting
| Retourque mounting bolts
|
| Steering linkage is worn or damaged
| Inspect and replace affected parts
|
| Steering coupler is loose or damaged
| Inspect, tighten or replace as required
|
| Loose thrust bearing preload adjustment
| Adjust to specifications
|
| Loose or damaged front wheel bearings
| Inspect, adjust or replace as required
|
Vehicle wandering from side to side
| Front end misaligned
| Check and align to specifications
|
| Worn front end parts or wheel bearings
| Inspect and replace affected parts
|
| Unbalanced or badly worn steering gear control valve
| Inspect and replace affected parts
|
Poor steering wheel return
| Tires underinflated
| Inflate tires to correct pressure
|
| Steering gear adjustment too tight
| Check adjustment with pitman arm disconnected; readjust if necessary
|
| Front end misaligned
| Check and align to specifications
|
| Steering coupler misaligned, hitting obstruction or damaged
| Inspect, adjust or replace affected parts
|
| Binding or lack of lubrication in steering linkage or ball joints
| Inspect, lubricate or replace affected parts
|
| Sticky or plugged steering gear spool valve
| Clean or replace
|
| Internal leakage in steering gear
| Inspect seals, replace as required or overhaul steering gear
|
The steering systems on our vehicles go through a tremendous amount of stress and all of that stress tends to wear out steering components at a fairly fast rate.This is why it's so important to learn how to diagnose these problems before they become too severe.