Power Steering Pump — Liberty Service Manual

Parts

PartP/S Pump

ManufacturerCHY

OEM part #52129328AC

Price$249.00

NotesIncludes Reservoir.

Labor

Replace1.6 hr

Warranty 0.0 hrSkill B

Procedures

Power Steering Pump: Specificationsreference

SPECIFICATIONS

Power Steering Pump Pulley - Removal5 steps

△ CAUTION

Do not reuse the old power steering pump pulley it is not intended for reuse. A new pulley must be installed if removed.

Remove air cleaner housing.
Remove the washer/coolant reservoir assembly.
Remove the fan shroud.
Remove power steering belt. Serpentine Accessory Drive Belt - Removal
Remove the pulley (2) from the pump using (OTC(R) 7185) power steering pulley removal tool or equivalent (3).

Power Steering Pump - Removal6 steps

Siphon out as much power steering fluid as possible.
Remove the serpentine drive belt Serpentine Accessory Drive Belt - Removal.
Remove the power steering high pressure hose at the pump.
Remove the return hose at the pump.
Remove the three bolts (1) securing the pump to the engine through the holes in the pulley (3).
Remove the pump from the vehicle.

Power Steering Pump Pulley - Installation6 steps

△ CAUTION

Do not reuse the old power steering pump pulley it is not intended for reuse. A new pulley must be installed if removed.

Replace the pulley (2) if it's bent, cracked, or loose.
Install the pulley (2) on the pump (1) using (OTC (R) 7771) power steering pulley installation tool or equivalent (3) making sure it is flush with the end of the shaft. Ensure the tool and pulley remain aligned with the pump shaft.
Install power steering belt. Serpentine Accessory Drive Belt - Installation
Install the fan shroud.
Install the washer/coolant reservoir assembly.
Install air cleaner housing.

Power Steering Pump - Installation5 steps

Install the pump to the vehicle.
Install the three bolts (1) securing the pump to the engine. (Figure 1) Tighten the bolts to 28 Nm (21 ft.lbs.).
Install the power steering hoses. Tighten to 27 Nm (20 ft.lbs.).
Install the serpentine belt Serpentine Accessory Drive Belt - Installation.
Refill the power steering fluid and check for leaks Service and Repair.

Power Steering Pump: Testing and Inspection5 steps

ℹ NOTE

This information is designed to be used in conjunction with the diagnostic charts at the beginning of the Steering.

Place gear selector in PARK (or NEUTRAL) with wheels chalked.
With the engine idling, have a helper turn the steering wheel.
Using an electronic listening tool, determine if noise is coming from the pump.
Increase the engine speed and have a helper turn the steering wheel. Does the noise change with load?
Replace the power steering pump if excessive noise is present. Power Steering Pump - Removal CHECKING FOR POWER STEERING HOSES TOUCHING BODY OR FRAME OF VEHICLE Check hoses and hose tubes as following: -Inspect hoses and hose tubes for witness marks. If witness marks are present, adjust hose(s) to the proper position by loosening, repositioning and tightening attachments to the specified torque [1][2]Power Steering Pump. Do not bend tubing to adjust. Replace the hose assembly if damaged. -Check fastener torque of hose mounting brackets and tube nuts. [1][2]Power Steering Pump -Have a helper bump the steering gear off of the stops to induce pressure fluctuations which may move the hose. If hose contact is made, adjust hose(s) to the proper position by loosening, repositioning and tightening attachments to the specified torque [1][2]Power Steering Pump. Do not bend tubing to adjust. Replace the hose assembly if damaged.

Power Steering Pump - Operationreference

ℹ NOTE

Power steering pumps have different pressure rates and are not interchangeable with other pumps.

OPERATION The power steering pump is a constant flow rate and displacement, vane-type pump. The pump internal parts operate submerged in fluid. The flow control orifice is part of the high pressure line fitting. The pressure relief valve inside the flow control valve limits the pump pressure.

Power Steering Pump - Descriptionreference

3.7L Hydraulic pressure for the power steering system is provided by a belt driven power steering pump (4) (Figure 1). The pump shaft has a pressed-on high strength plastic drive pulley (3) that is belt driven by the crankshaft pulley.

Factory service manual

From the 2008 KK factory manual — descriptions, specs, torque & procedures for this part.

PUMP📷 2

Description

2.8L POWER STEERING PUMP

Hydraulic pressure for the power steering system is provided by a belt driven power steering pump. The pump shaft has a bolt-on drive pulley that is belt driven by the crankshaft pulley. The reservoir is separate from the pump body. The power steering pump is connected to the steering gear by the pressure and return hoses.

3.7L POWER STEERING PUMP

1 - RESERVOIR 2 - CAP 3 - PULLEY 4 - PUMP BODY 5 - RESERVOIR RETAINING CLIPS

Hydraulic pressure for the power steering system is provided by a belt driven power steering pump (4). See Fig. 69. The pump shaft has a pressed-on high strength plastic drive pulley (3) that is belt driven by the crankshaft pulley.

POWER STEERING PUMP📷 1

The power steering pump is a constant flow rate and displacement, vane-type pump. The pump internal parts operate submerged in fluid. The flow control orifice is part of the high pressure line fitting. The pressure relief valve inside the flow control valve limits the pump pressure.

NOTE: Power steering pumps have different pressure rates and are not interchangeable with other pumps.

POWER STEERING PUMP AND HOSES

NOTE: This information is designed to be used in conjunction with the diagnostic charts at the beginning of the Steering article. See DIAGNOSIS AND TESTING.

CHECKING FOR WEAR OF POWER STEERING PUMP INTERNAL COMPONENTS

1.   Place gear selector in PARK (or NEUTRAL) with wheels chalked.
  2.   With the engine idling, have a helper turn the steering wheel.
  3.   Using an electronic listening tool, determine if noise is coming from the pump.
  4.   Increase the engine speed and have a helper turn the steering wheel. Does the noise change with load?
  5.   Replace the power steering pump if excessive noise is present. See REMOVAL.

POWER STEERING PUMP - 2.8L DIESEL

1.   Siphon out as much power steering fluid as possible.
 2.   Remove the air cleaner housing (Refer to REMOVAL ).
 3.   Remove the turbo air inlet tube.
 4.   Remove the serpentine drive belt (3). Refer to REMOVAL .
 5.   Remove the power steering hoses (2&4).

6. Remove the three bolts (2) securing the pump (1) to the engine through the pulley access holes (3). 7. Remove the pump (1) from the vehicle.

POWER STEERING PUMP - 3.7L📷 2

1. Siphon out as much power steering fluid as possible.

1 - MOUNTING BOLTS 2 - RESERVOIR 3 - STEEL PULLEY

 2.   Remove the serpentine drive belt. Refer to REMOVAL .
 3.   Remove the power steering high pressure hose at the pump.
 4.   Remove the return hose at the pump.
 5.   Remove the three bolts (1) securing the pump to the engine through the holes in the pulley (3).
 6.   Remove the pump from the vehicle.

POWER STEERING PUMP - 2.8L DIESEL📷 3

1. Install the pump (1) to the vehicle. 2. Install the three bolts securing the pump (1) to the engine through the access holes (3) and tighten to 28 N.m (21 ft. lbs.).

 3.   Install the pressure power steering hoses (2). Tighten to 31 N.m (23 ft. lbs.).
 4.   Reclamp the supply hose (4) to the pump (1).
 5.   Install the serpentine belt (3). Refer to INSTALLATION .
 6.   Install the air inlet tube.
 7.   Install the air cleaner housing (Refer to REMOVAL ).
 8.   Refill the power steering fluid and bleed the system. See STANDARD PROCEDURE.

POWER STEERING PUMP - 3.7L📷 1

1 - MOUNTING BOLTS 2 - RESERVOIR 3 - STEEL PULLEY

1. Install the pump to the vehicle. 2. Install the three bolts (1) securing the pump to the engine Tighten the bolts to 28 N.m (21 ft.lbs.). See Fig. 75. 3. Install the power steering hoses. Tighten to 27 N.m (20 ft.lbs.). 4. Install the serpentine belt. Refer to INSTALLATION . 5. Refill the power steering fluid and check for leaks. See STANDARD PROCEDURE.

PULLEY - DIESEL ENGINE📷 2

1.   Remove the air cleaner box (Refer to REMOVAL ).
  2.   Remove the air inlet tube.
  3.   Remove the serpentine drive belt (2).
  4.   Remove the three bolts (3) securing the pulley (1) to the pump (4).

PULLEY- GAS ENGINE📷 1

CAUTION: Do not reuse the old power steering pump pulley it is not intended for reuse. A new pulley must be installed if removed.

  1.   Remove air cleaner housing (Refer to REMOVAL ).
  2.   Remove the washer/coolant reservoir assembly.
  3.   Remove the fan shroud.
  4.   Remove power steering belt. Refer to REMOVAL .

5. Remove the pulley (2) from the pump using (OTC® 7185) power steering pulley removal tool or equivalent (3).

PULLEY - DIESEL ENGINE📷 1

1.   Install the pulley (1) to the pump shaft.
  2.   Install the three bolts (3) securing the pulley (1) to the pump (4). Tighten to 47 N.m (35 ft. lbs.).
  3.   Install the serpentine belt (2).
  4.   Install the air inlet tube.
  5.   Install the air cleaner box (Refer to INSTALLATION ).

PULLEY - GAS ENGINE📷 1

CAUTION: Do not reuse the old power steering pump pulley it is not intended for reuse. A new pulley must be installed if removed.

1. Replace the pulley (2) if it's bent, cracked, or loose. 2. Install the pulley (2) on the pump (1) using (OTC ® 7771) power steering pulley installation tool or equivalent (3) making sure it is flush with the end of the shaft. Ensure the tool and pulley remain aligned with the pump shaft. 3. Install the air box assembly (Refer to INSTALLATION ). 4. Install power steering belt. Refer to INSTALLATION . 5. Install the fan shroud. 6. Install the washer/coolant reservoir assembly. 7. Install air cleaner housing (Refer to INSTALLATION )

RESERVOIR