Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1796
STEERING
DESCRIPTION
STEERING SYSTEMS
RWD Power steering systems consist of:
•
Steering column
•
Rack and pinion steering gear (9)
•
Belt driven hydraulic steering pump (7)
•
Pump pressure (8), return (1&3) and supply (6) hoses
•
Oil Cooler (2)
•
Remote Reservoir (5)
•
Inner & Outer tie rod ends (4)
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AWD Power steering systems consist of:
•
Steering column
•
Rack and pinion steering gear (5)
•
Belt driven hydraulic steering pump (8)
•
Pump pressure (9), return (1&3) and supply (7) hoses
•
Oil Cooler (2)
•
Remote Reservoir (6)
•
Inner & Outer tie rod ends (4)
WARNING
WARNING: Power steering fluid, engine parts and exhaust system may be extremely hot if engine has been
running. Do not start engine with any loose or disconnected hoses. Do not allow hoses to touch hot
exhaust manifold or catalyst.
WARNING: Fluid level should be checked with the engine off to prevent personal injury from moving parts.
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CAUTION
CAUTION: Anytime the battery has been disconnected and is reconnected it is important that this be per-
formed properly. The vehicle may be equipped with systems that require special calibration processes.
(Refer to 8 - ELECTRICAL/BATTERY SYSTEM - STANDARD PROCEDURE)
CAUTION: When the power steering system is open, cap all open ends of the hoses, power steering pump
fittings or power steering gear ports to prevent entry of foreign material into the components.
CAUTION: When servicing power steering components, do not pinch off power steering hoses in any way to
stop fluid flow. Damage to hoses may result.
CAUTION: If the steering wheel is excessively off-center, outside of Chassis specifications, inadvertent ESP
activations may occur on a vehicle so equipped.
DIAGNOSIS AND TESTING
HYDRAULIC FLOW AND PRESSURE TEST
The following procedure is used to test the operation of the power steering system on this vehicle. This test will
provide the gallons per minute (GPM) or flow rate of the power steering pump along with the maximum relief pres-
sure. Perform this test anytime a power steering system problem is present. This test will determine if the power
steering pump or power steering gear is not functioning properly. The following test is performed using the Power
Steering Analyzer Kit 6815 (with appropriate hoses) and Adapters from Power Steering Analyzer Adapter Kit 6893.
(Refer to 19 - STEERING - SPECIAL TOOLS)
1. Check power steering belt to ensure it is in good
condition and adjusted properly.
2. Assemble Power Steering Analyzer as follows:
a. Gauge end (inlet) of Flow Meter And Gauge
6800 (3) – Hose 6905 (6), Hose 6713 (4),
Adapter Tube 6844 (5)
b. Valve end (outlet) of Flow Meter And Gauge
6800 (3) – Hose 6959 (1), Adapter Fitting 6826
(2)
3. Unthread pressure hose tube nut at power steering
pump.
4. Connect Adapter Tube 6844 to pressure fitting on
power steering pump. Tighten tube nut to specifica-
tions. (Refer to 19 - STEERING - SPECIFICA-
TIONS)
5. Connect power steering pressure hose to Adapter
Fitting 6826. Tighten tube nut to specifications.
(Refer to 19 - STEERING - SPECIFICATIONS)
6. Open Analyzer test valve completely.
7. Start engine and allow to idle long enough to circulate power steering fluid through Analyzer flow meter and
hoses.
8. Shut off engine and check fluid level; add fluid as necessary. Repeat Step 7 and Step 8 until air is bled from
system.
9. Start engine and allow to idle.
10. Check Analyzer gauge (3) pressure. Initial pressure reading should be 50-125 psi (345-862 kPa). If pressure is
higher, inspect hoses for restrictions and repair as necessary.
11. Increase engine speed to 1,100 rpm (1,200 rpm for SRT8) and read Analyzer Flow Meter. The reading should
be 2.2 GPM (8.2 LPM) minimum. If flow reading is below specification, replace power steering pump.
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CAUTION: The following test procedure involves testing maximum pump pressure output and flow control
valve operation. Do not leave valve closed for more than five seconds as the pump could be damaged.
12. Close valve fully three times and record highest pressure indicated each time. All three readings must be
above specifications and within 50 psi (345 kPa) of each other.
NOTE: Power steering pump maximum relief pressure is 1640-1740 psi (11307 to 11997 kPa).
•
Power steering pump pressures above specifications but not within 50 psi (345 kPa) of each other, replace
pump.
•
Pressures within 50 psi (345 kPa) of each other but below specifications, replace pump.
CAUTION: Do not force the pump to operate against the stops for more than 2 to 4 seconds at a time
because, pump damage will result.
13. Completely open the valve on the Power Steering Analyzer. Turn the steering wheel to the extreme left until the
stop in the steering gear is met, then turn the steering wheel to the right until the right stop is met. Record the
highest indicated pressure at each position. Compare the recorded readings to the specifications. If the highest
recorded output pressure reading against one stop is not within 50 psi (345 kPa) of the highest recorded read-
ing at the other stop, the steering gear is leaking internally and must be replaced.
STEERING DIAGNOSIS CHARTS
NOTE: There are three diagnosis charts following that cover POWER STEERING NOISE, STEERING WHEEL
FEEL, and POWER STEERING FLUID.
POWER STEERING NOISE
CONDITION
POSSIBLE CAUSES
CORRECTION
OBJECTIONABLE HISS
OR WHISTLE*
1. Damaged or mis-positioned
steering column shaft/coupling dash
panel seal.
1. Reposition or replace steering
column shaft/coupling dash panel seal.
2. Noisy valve in power steering
gear.
2. Replace power steering gear.
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