Dodge ZB 2005 Service Manual page 816

ZB
STEERING
WARNINGS AND CAUTIONS
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - HYDRAULIC
FLOW AND PRESSURE . . . . . . . . . . . . . . . . . 1
DIAGNOSIS AND TESTING - STEERING
SYSTEM DIAGNOSIS CHARTS . . . . . . . . . . . . 3
STEERING
WARNINGS AND CAUTIONS
WARNING: POWER STEERING FLUID, ENGINE
PARTS AND EXHAUST
EXTREMELY HOT IF ENGINE HAS BEEN RUNNING.
DO NOT START ENGINE WITH ANY LOOSE OR DIS-
CONNECTED 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.
CAUTION: When the system is open, cap all open
ends of the hoses, power steering pump fittings or
power steering gear ports to prevent entry of for-
eign material into the components.
CAUTION: Do not use any type of automatic trans-
mission fluid in the power steering system. Use
only correct Mopar Power Steering Fluid or equiv-
alent.
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - HYDRAULIC FLOW
AND PRESSURE
The following procedures are used to test the oper-
ation of the power steering and hydraulic fan sys-
tems on this vehicle. These tests will provide the
gallons per minute (GPM) or flow rate of the power
steering pump along with the maximum relief pres-
sure at given points in the system. Perform the first
test anytime a power steering system problem is
STEERING
TABLE OF CONTENTS
page
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SYSTEM MAY BE
SPECIFICATIONS
POWER STEERING FASTENER TORQUE
SPECIAL TOOLS
POWER STEERING
COLUMN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
GEAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
present and the second as necessary once the first
test is completed. These tests will determine if the
power steering pump, hydraulic fan, or power steer-
ing gear is not functioning properly. They will also
determine if the flow coming out of the hydraulic fan
motor is sufficient for the power steering gear. The
following pressure and flow tests are performed using
the Power Steering Analyzer kit 6815 (with appropri-
ate hoses) and Adapter kit 9091. (Refer to 19 -
STEERING - SPECIAL TOOLS)
FLOW AND PRESSURE TEST - AT POWER
STEERING PUMP
(1) Check power steering belt to ensure it is in
good condition and adjusted properly.
(2) Assemble Power Steering Analyzer as follows
(Fig. 1):
(a) Gauge end (inlet) of Flow Meter And Gauge
6800 – Hose 6905, Hose 6713, Adapter Tube 9091-1
(b) Valve end (outlet) of Flow Meter And Gauge
6800 – Hose 6959, Adapter Fitting 9091-3
(3) Unthread pressure hose quick-connect fitting
from power steering pump.
(4) Connect Adapter Tube 9091-1 to pressure fit-
ting on power steering pump.
(5) Connect power steering pressure hose to
Adapter Fitting 9091-3.
(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 pressure. Initial pres-
sure reading should be 483-690 kPa (70-100 psi). If
pressure is higher, inspect hoses for restrictions and
repair as necessary.
STEERING 19 - 1
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