The pump is connected to the steering gear via the pressure hose and the return hoses. The pump shaft has a
pressed-on pulley that is belt driven by the crankshaft pulley.

The power steering oil cooler is mounted to the front lower part of the radiator.

NOTE: Power steering pumps are not interchangeable with pumps installed on other vehicles.

OPERATION

Hydraulic pressure is provided for the power steering gear by the belt driven power steering pump. The power steer-
ing pumps are constant flow rate and displacement, vane-type pumps.

DIAGNOSIS AND TESTING

PUMP LEAKAGE

The pump is serviced as an assembly and should not be disassembled. Plastic pump reservoirs can be replace and
the reservoir O-ring.

Check for leaks in the following areas:

•

Pump shaft seal behind the pulley

•

Pump to reservoir O-ring

•

Reservoir cap

•

Pressure and return lines

•

Flow control valve fitting

PUMP

19 - 37

STANDARD PROCEDURE

POWER STEERING PUMP - INITIAL OPERATION

WARNING: THE FLUID LEVEL SHOULD BE CHECKED WITH ENGINE OFF TO PREVENT INJURY FROM MOV-
ING COMPONENTS.

CAUTION: MOPAR

ATF+4 is to be used in the power steering system. No other power steering or auto-

matic transmission fluid is to be used in the system. Damage may result to the power steering pump and
system if any other fluid is used, and do not overfill.

Wipe filler cap clean, then check the fluid level. The dipstick should indicate COLD when the fluid is at normal
temperature.

1. Turn steering wheel all the way to the left

2. Fill the pump fluid reservoir to the proper level and let the fluid settle for at least two (2) minutes.

3. Raise the front wheels off the ground.

4. Slowly turn the steering wheel lock-to-lock 20 times with the engine off while checking the fluid level.

NOTE: Vehicles with long return lines or oil coolers turn wheel 40 times.

5. Start the engine. With the engine idling maintain the fluid level.

6. Lower the front wheels and let the engine idle for two minutes.

7. Turn the steering wheel in both direction and verify power assist and quiet operation of the pump.

If the fluid is extremely foamy or milky looking, allow the vehicle to stand a few minutes and repeat the procedure.

CAUTION: Do not run a vehicle with foamy fluid for an extended period. This may cause pump damage.

REMOVAL

1. Drain and siphon the power steering fluid from the

pump.

2. Remove the serpentine drive belt, (Refer to 7 -

COOLING/ACCESSORY DRIVE/DRIVE BELTS -
REMOVAL).

3. Remove the reservoir return hose (3) at the reser-

voir (1).

19 - 38

PUMP

4. Remove the pressure hose (2) from the pump.

5. Remove 3 pump mounting bolts through pulley (1)

access holes.

6. Remove the pump (4) from the engine.

INSTALLATION

1. Align the pump (4) with the mounting holes on the

engine.

2. Install 3 pump mounting bolts through the pulley

access holes (1). Tighten the bolts to 28 N·m (21 ft.
lbs.).

3. Install the pressure hose (2) to the pump (4).

Tighten the pressure hose to 31 N·m (23 ft. lbs.).

4. Install reservoir return hose (3) to the reservoir (1).

5. Install the serpentine drive belt, (Refer to 7 -

COOLING/ACCESSORY DRIVE/DRIVE BELTS -
INSTALLATION).

6. Fill the power steering pump, (Refer to 19 -

STEERING/PUMP - STANDARD PROCEDURE).

PUMP

19 - 39

Content .. 897 898 899 900 ..