Power steering pump
Power steering pump DESCRIPTION The pump is connected to the steering gear via the
pressure hose and the return hose. The pump shaft
has a pressed-on pulley that is belt driven by the
crankshaft pulley.
Trailer tow option vehicles are equipped with a
power steering pump oil cooler. On the 5.2L and 5.9L
the oil cooler is mounted to the engine block. On the
4.7L the oil cooler is mounted to the power steering
pump. 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 (Fig.
1) and (Fig. 2). The power steering pumps are constant
flow rate and displacement, vane-type pumps.
Fig. 1 Power Steering Pump - 5.2L & 5.9L 1 - RESERVOIR CAP AND DIPSTICK 2 - RESERVOIR
Fig. 2 Power Steering Pump - 4.7L 1 - PUMP 2 - RESERVOIR 3 - PULLEY 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: Power steering pump - initial operation WARNING: THE FLUID LEVEL SHOULD BE
CHECKED WITH ENGINE OFF TO PREVENT INJURY
FROM MOVING COMPONENTS. CAUTION: Use MOPAR Power Steering Fluid or
equivalent. Do not use automatic transmission fluid
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) Remove the serpentine drive belt, refer to
Group 7 Cooling.
(2) Clamp the fluid return hose and disconnect the
hoses from the power steering pump. Cap the fittings.
(3) Remove battery ground cable and bracket bolts.
(4) Remove the pump assembly (Fig. 3).
(5) Remove the pump pulley, refer to Pump Pulley
Removal. This will allow access to the pump attaching
screws.
(6) Remove the pump bracket bolts (Fig. 4) and
remove the bracket. INSTALLATION (1) Install the bracket on the pump and tighten
bolts to 41 N*m (30 ft. lbs.).
(2) Install the pump pulley, refer to Pump Pulley
Installation.
(3) Install pump assembly on the engine block and
tighten the bolts to 41 N*m (30 ft. lbs.).
(4) Install the battery ground wire and tighten nut
to 41 N*m (30 ft. lbs.).
(5) Connect the fluid hoses to the pump.
Fig. 3 Pump Assembly 1 - PUMP ASSEMBLY 2 - BOLTS
Fig. 4 Pump Mounting Bracket 1 - PULLEY 2 - PUMP BRACKET 3 - STEERING PUMP 4 - BOLT (6) Install the serpentine drive belt refer to Group
7 Cooling.
(7) Fill the reservoir with power steering fluid,
refer to Power Steering Pump Initial-Operation. REMOVAL (1) Remove the serpentine drive belt, refer to
Group 7 Cooling.
(2) Remove return hose from the pump reservoir
and drain the pump.
(3) Remove power steering pressure switch connector
and remove pressure line from the bottom of the
pump.
(4) Remove the oil cooler mounting bolt from the
pump bracket if equipped.
(5) Remove 3 pump mounting bolts (Fig. 5)
through pulley access holes.
(6) Remove the pump from the left cylinder head.
Fig. 5 Power Steering Pump - 4.7L 1 - PUMP 2 - MOUNTING BOLTS INSTALLATION (1) Align the pump with the mounting holes in the
left cylinder head.
(2) Install 3 pump mounting bolts through the pulley
access holes. Tighten the bolts to 28 N*m (21 ft.
lbs.).
(3) Install the oil cooler to the pump bracket if
equipped. Install the oil cooler mounting bolt.
(4) Install the pressure line and return hose to the
pump. Tighten the pressure line to 35 N*m (25 ft.
lbs.).
(5) Install power steering pressure switch connector.
(6) Install the serpentine drive belt, refer to Group
7 Cooling.
(7) Fill the power steering pump and perform
Power Steering Pump Initial Operation. Pump pulley DISASSEMBLY (1) Remove pump assembly.
(2) Remove pulley from pump with Puller C-4333
(Fig. 6).
Fig. 6 Pulley Removal 1 - POWER STEERING PUMP DRIVE PULLEY 2 - SPECIAL TOOL C-4333 ASSEMBLY (1) Replace pulley if bent, cracked, or loose.
(2) Install pulley on pump with Installer C-4063-B
(Fig. 7) flush with the end of the shaft. Ensure the
tool and pulley remain aligned with the pump shaft.
Fig. 7 Pulley Installation 1 - POWER STEERING PUMP DRIVE PULLEY 2 - SPECIAL TOOL C-4063-B (3) Install pump assembly.
(4) With Serpentine Belts; Run engine until warm
(5 min.) and note any belt chirp. If chirp exists, move
pulley outward approximately 0.5 mm (0.020 in.). If
noise increases, press on 1.0 mm (0.040 in.). Be
careful that pulley does not contact mounting
bolts. Specifications Torque chart DESCRIPTION TORQUE 5.2L/5.9L Power Steering Pump Pump Bracket Bolts . . . . . . . . 41 N*m (30 ft. lbs.) Pump Mounting Bolts . . . . . . 41 N*m (30 ft. lbs.) Flow Control Valve . . . . . . . . 75 N*m (55 ft. lbs.) Pressure Line . . . . . . . . . . . . . 35 N*m (25 ft. lbs.) 4.7L Power Steering Pump Pump Mounting Bolts . . . . . . 28 N*m (21 ft. lbs.) Flow Control Valve . . . . . . . . 81 N*m (60 ft. lbs.) Pressure Line . . . . . . . . . . . . . 35 N*m (25 ft. lbs.) Special tools Power steering pump
Analyzer Set, Power Steering Flow/Pressure 6815
Adapters, Power Steering Flow/Pressure Tester 6893
Puller C-4333
Installer, Power Steering Pulley C-4063-BDescription and operation
Diagnosis and testing
Service procedures
Removal and installation
Power steering pump - 5.2L & 5.9L
Power steering pump - 4.7L
Disassembly and assembly
Dodge Durango (DN) 1998-2003 Service Manual
- Lubrication and Maintenance
- Suspension
- Differential and Driveline
- Brakes
- Cooling System
- Battery
- Starting Systems
- Charging System
- Ignition System
- Instrument Panel Systems
- Audio Systems
- Horn Systems
- Speed Control System
- Turn Signal and Hazard Warning Systems
- Wiper and Washer Systems
- Lamps
- Passive Restraint Systems
- Electrically Heated Systems
- Power Distribution System
- Power Lock Systems
- Vehicle Theft/Security Systems
- Power Seat System
- Power Window Systems
- Power Mirror Systems
- Chime/Buzzer Warning Systems
- Overhead Console Systems
- Engine
- Exhaust System
- Frame and Bumpers
- Fuel System
- Steering
- Transmission and Transfer Case
- Tires and Wheels
- Body
- Heating and Air Conditioning
- Emission Control Systems
- Introduction