ear (side-to-side) travel through the meshing of the
helical pinion teeth with the rack teeth within the
steering gear. The lateral travel pushes and pulls the
tie rods to change the direction of the vehicle’s front
wheels.

Power assist steering is provided by a belt driven

rotary type pump. It directs fluid through power
steering fluid hoses to the power steering gear where
it is used to assist the driver’s turning effort.

Manual steering control of the vehicle can be main-

tained if power steering assist is lost. However,
under this condition, steering effort is significantly
increased.

WARNINGS AND CAUTIONS

WARNING:

POWER

STEERING

FLUID,

ENGINE

PARTS

AND

EXHAUST

SYSTEM

MAY

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: When servicing power steering compo-
nents, do not pinch off power steering hoses in an
any way to stop fluid flow. Damage to hoses may
result.

DIAGNOSIS AND TESTING

DIAGNOSIS AND TESTING - POWER STEERING
FLOW AND PRESSURE TEST

WARNING:

PREVENT

PERSONAL

INJURY,

SAFETY GOGGLES SHOULD BE WORN AT ALL
TIMES WHILE PERFORMING ANY TEST PROCE-
DURES ON THE POWER STEERING SYSTEM.

The following procedure is to be used to test the

operation of the power steering system on this vehi-

STEERING

19 - 1

cle. This test will provide the flow rate of the power
steering pump along with the maximum relief pres-
sure. This test is to be performed any time a power
steering system problem is present to determine if
the power steering pump or power steering gear is
not functioning properly. The following flow and pres-
sure test is performed using the Power Steering Ana-
lyzer Kit, Special Tool 6815 (Fig. 1), hoses, Special
Tools 6905 and 6959, and adapters, Special Tool
8185A.

(1) Assemble hoses on Power Steering Analyzer as

shown (Fig. 1). Install Pressure Hose, Special Tool
6959, in inlet fitting (gauge end) of Power Steering
Analyzer flow meter. Install Pressure Hose, Special
Tool 6905 (in 6893 kit), into outlet fitting (valve end)
of Power Steering Analyzer flow meter. Install Pres-
sure Hose, Special Tool 6713 (in 6815 kit) on 6905.

(2) Install Adapter, Special Tool 8185-1A, in end of

Pressure Hose, Special Tool 6713.

(3) Install Adapter, Special Tool 8185-2, in end of

Pressure Hose, Special Tool 6959.

(4) Raise and support vehicle. (Refer to LUBRICA-

TION & MAINTENANCE/HOISTING - STANDARD
PROCEDURE)

(5) Unscrew tube nut and remove power steering

fluid pressure hose from power steering gear (Fig. 2).

(6) Thread vehicle’s power steering pressure hose

into Adapter, Special Tool 8185-2, connected to Ana-
lyzer Hose (Fig. 3). Tighten tube nut to specifications
(Refer to 19 - STEERING - SPECIFICATIONS).
Route hoses away from exhaust system as well as
other unfriendly surfaces.

(7) Thread Adapter, Special Tool 8185-1A, con-

nected to Analyzer hose, into open power steering
gear port (Fig. 3). Tighten tube nut to specifications

(Refer to 19 - STEERING - SPECIFICATIONS).
Route hoses away from exhaust system as well as
other unfriendly surfaces.

(8) Being careful not to kink or pinch Analyzer

hoses, lower vehicle to ground level.

Fig. 1 Power Steering Analyzer With Hoses Installed

1 - SPECIAL TOOL 6815
2 - SPECIAL TOOL 6959
3 - SPECIAL TOOL 8185-2
4 - SPECIAL TOOL 6905 & 6713-1

Fig. 2 Hoses At Steering Gear

1 - POWER STEERING GEAR
2 - RETURN HOSE
3 - PRESSURE HOSE
4 - TUBE NUTS

Fig. 3 Analyzer Connections At Gear

1 - HOSE 6713
2 - POWER STEERING GEAR
3 - PRESSURE HOSE
4 - ADAPTER 8185-2
5 - HOSE 6959
6 - ADAPTER 8185-1A

19 - 2

STEERING

STEERING (Continued)

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