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how to replace power steering pump on Mitsubishi Diamante?

The procedure is as follows :----

Removal & Installation



image
Fig. Exploded view of the power steering pump-Mirage
  1. Drain the power steering system as follows:
  1. Disconnect the return hose at the reservoir and place into a suitable container.
  2. Disable the ignition system. While cranking the engine, turn the wheels several times, until system has been drained.
  1. Disconnect the battery negative cable.
  2. Remove the pressure switch connector from the side of the pump.
  3. If the alternator is located under the oil pump, cover it with a shop towel to protect it from oil.
  4. Disconnect the pressure line.
  5. Remove the steering pump drive belt and the water pump pulley drive belt.
  6. Remove the water pump pulley.
  7. Remove the bolts that secure the oil pump, then remove the pump from its bracket.
To install:
  1. Install the power steering pump and tighten the mounting bolts to specifications.
  2. Install the water pump pulley and tighten the mounting bolts 14 ft. lbs. (19 Nm).
  3. Install and adjust the drive belts.
  4. Replace the O-rings and connect the pressure line. Connect the pressure line so the notch in the fitting aligns and contacts the pump's guide bracket. Tighten the nut that secures the pressure line to 13 ft. lbs. (18 Nm).
  5. Connect the return line.
  6. Attach the pressure switch connector.
  7. Refill the reservoir and bleed the system.
  1. Disconnect the battery negative cable.
  2. Drain the power steering fluid into a suitable container.
  3. Remove the power steering drive belt.
  4. Cover the A/C compressor or alternator, as applicable, with a shop towel, then disconnect the suction and pressure hoses from the power steering pump. Remove the gaskets.

    Click image to see an enlarged view
    Fig. Exploded view of the power steering pump and related components-1999 2.0L non-turbo engines


    Click image to see an enlarged view
    Fig. Power steering pump mounting-1999 2.0L turbo and 2.4L engines
  5. Detach the pressure switch connector. Unfasten the retaining bolts, then remove the pump assembly.
  6. If necessary, remove the retainers, then remove the pump bracket.
  7. Installation is the reverse of the removal procedure.
  8. For vehicles with A/C, when installing the power steering pump, install it to the bracket so that it faces toward the front of the vehicle. Then use the A/C pulley to adjust the belt tension.
  9. Refill the reservoir and bleed the system.
  1. Disconnect the battery negative cable.
  2. Drain the power steering fluid into a suitable container.
  3. Remove the power steering drive belt.
  4. Disconnect the supply and return lines.
  5. Remove the pump mounting bolts.
  6. Remove the power steering pump mounting bracket.
  7. Remove the power steering pump.
  8. Installation is the reverse order of removal.
    1. Tighten the power steering pump bracket bolt to 36 ft. lbs. (49 Nm).
    2. Tighten the power steering pump mounting bolts to 21 ft. lbs. (29 Nm).
  9. Bleed the power steering system.
  10. Check the tension of the power steering pump belt.


Click image to see an enlarged view
Fig. Exploded view of the power steering pump-Diamante
  1. Disconnect the battery negative cable.
  2. Disconnect the return fluid line. Remove the reservoir cap and allow the return line to drain the fluid from the reservoir. If the fluid is contaminated, disconnect the ignition high tension cable and crank the engine several times to drain the fluid from the gearbox.
  3. Remove the power steering pump drive belt.
  4. Remove the pressure switch connector from the side of the pump.
  5. If the alternator is located under the oil pump, cover it with a shop towel to protect it from oil.
  6. Disconnect the high pressure hose and the return hose from the pump.
  7. Remove the pump drive belt and unbolt the pump from its bracket and remove the pump.
To install:
  1. Install the pump, wrap the belt around the pulley and tighten the bolts that secure the pump to 17 ft. lbs. (24 Nm).
  2. Replace the O-rings and connect the high pressure hose. Connect the pressure line so the notch in the fitting aligns and contacts the pump's guide bracket. Tighten the mounting nut with lockwasher to 17 ft. lbs. (24 Nm).
  3. Using a new hose clamp, connect the return line.
  4. Attach the pressure switch connector.
  5. Adjust the belt tension and tighten the adjusting bolts.
  6. Refill the reservoir and bleed the system.


Click image to see an enlarged view
Fig. Exploded view of the power steering pump-Mirage
  1. Drain the power steering system as follows:
    1. Disconnect the return hose at the reservoir and place into a suitable container.
    2. Disable the ignition system. While cranking the engine, turn the wheels several times, until system has been drained.
  2. Disconnect the battery negative cable.
  3. Remove the pressure switch connector from the side of the pump.
  4. If the alternator is located under the oil pump, cover it with a shop towel to protect it from oil.
  5. Disconnect the pressure line.
  6. Remove the steering pump drive belt and the water pump pulley drive belt.
  7. Remove the water pump pulley.
  8. Remove the bolts that secure the oil pump, then remove the pump from its bracket.
To install:
  1. Install the power steering pump and tighten the mounting bolts to specifications.
  2. Install the water pump pulley and tighten the mounting bolts 14 ft. lbs. (19 Nm).
  3. Install and adjust the drive belts.
  4. Replace the O-rings and connect the pressure line. Connect the pressure line so the notch in the fitting aligns and contacts the pump's guide bracket. Tighten the nut that secures the pressure line to 13 ft. lbs. (18 Nm).
  5. Connect the return line.
  6. Attach the pressure switch connector.
  7. Refill the reservoir and bleed the system.

2.4L Engine





Click image to see an enlarged view
Fig. Exploded view of the power steering pump-1994-00 Galant with 2.4L engine
  1. Disconnect the battery negative cable.
  2. Loosen and remove the power steering pump drive belt.
  3. Remove the pressure switch connector from the side of the pump.

NOTE
If the alternator is located under the oil pump, cover it with a shop towel to protect it from oil.

  1. Disconnect the return fluid line. Remove the reservoir cap and allow the return line to drain the fluid from the reservoir. If the fluid is contaminated, disconnect the ignition high tension cable and crank the engine several times to drain the fluid from the gearbox.
  2. Disconnect the pressure line.
  3. Unbolt and remove the pump from the mounting bracket.
To install:
  1. Install the pump, wrap the belt around the pulley and lightly tighten the mounting bolts.
  2. Replace the O-rings and connect the pressure line. Connect the pressure line so the notch in the fitting aligns and contacts the pump's guide bracket. Tighten the fitting to 13 ft. lbs. (18 Nm).
  3. Connect the return line and secure with the clamp.
  4. Attach the pressure switch connector.
  5. Adjust the power steering belt for proper tension and tighten the adjusting bolts.
  6. Reconnect the negative battery cable.
  7. Refill the reservoir and bleed the system.


Click image to see an enlarged view
Fig. Exploded view of the power steering pump-1999-2003 Galant with 2.4L engine
  1. Disconnect the battery negative cable.
  2. Loosen and remove the power steering pump drive belt.
  3. Remove the pressure switch connector from the side of the pump.
    NOTE
    If the alternator is located under the oil pump, cover it with a shop towel to protect it from oil.
  4. Disconnect the return fluid line. Remove the reservoir cap and allow the return line to drain the fluid from the reservoir. If the fluid is contaminated, disconnect the ignition high tension cable and crank the engine several times to drain the fluid from the gearbox.
  5. Disconnect the pressure line.
  6. Unbolt and remove the pump from the mounting bracket.
To install:
  1. Install the pump, wrap the belt around the pulley and lightly tighten the mounting bolts.
  2. Replace the O-rings and connect the pressure line. Connect the pressure line so the notch in the fitting aligns and contacts the pump's guide bracket. Tighten the fitting to 13 ft. lbs. (18 Nm).
  3. Connect the return line and secure with the clamp.
  4. Attach the pressure switch connector.
  5. Adjust the power steering belt for proper tension and tighten the adjusting bolts.
  6. Reconnect the negative battery cable.
  7. Refill the reservoir and bleed the system.

3.0L Engine



  1. Disconnect the battery negative cable.
  2. Disconnect the return fluid line. Remove the reservoir cap and allow the return line to drain the fluid from the reservoir. If the fluid is contaminated, disconnect the ignition high tension cable and crank the engine several times to drain the fluid from the gearbox.
  3. Remove the power steering pump drive belt.
  4. Remove the pressure switch connector from the side of the pump.
  5. If the alternator is located under the oil pump, cover it with a shop towel to protect it from oil.
  6. Disconnect the high pressure hose and the return hose from the pump.
  7. Remove the pump drive belt and unbolt the pump from its bracket and remove the pump.
To install:
  1. Install the pump, wrap the belt around the pulley and tighten the bolts that secure the pump to 17 ft. lbs. (24 Nm).
  2. Replace the O-rings and connect the high pressure hose. Connect the pressure line so the notch in the fitting aligns and contacts the pump's guide bracket. Tighten the mounting nut with lockwasher to 17 ft. lbs. (24 Nm).
  3. Using a new hose clamp, connect the return line.
  4. Attach the pressure switch connector.
  5. Adjust the belt tension and tighten the adjusting bolts.
  6. Refill the reservoir and bleed the system.
  1. Disconnect the battery negative cable.
  2. Disconnect the return fluid line. Remove the reservoir cap and allow the return line to drain the fluid from the reservoir. If the fluid is contaminated, disconnect the ignition high tension cable and crank the engine several times to drain the fluid from the gearbox.
  3. Remove the power steering pump drive belt.
  4. Remove the pressure switch connector from the side of the pump.
  5. If the alternator is located under the oil pump, cover it with a shop towel to protect it from oil.
  6. Disconnect the high pressure hose and the return hose from the pump.
  7. Remove the pump drive belt and unbolt the pump from its bracket and remove the pump.
To install:
  1. Install the pump, wrap the belt around the pulley and tighten the bolts that secure the pump to 17 ft. lbs. (24 Nm).
  2. Replace the O-rings and connect the high pressure hose. Connect the pressure line so the notch in the fitting aligns and contacts the pump's guide bracket. Tighten the mounting nut with lock washer to 17 ft. lbs. (24 Nm).
  3. Using a new hose clamp, connect the return line.
  4. Attach the pressure switch connector.
  5. Adjust the belt tension and tighten the adjusting bolts.
  6. Refill the reservoir and bleed the system.

3.8L Engine



  1. Disconnect the negative battery cable.
  2. Remove the power steering drive belt.
  3. Disconnect the pressure switch connector electrical connector.
  4. Disconnect the supply and return hoses and gaskets.
  5. Disconnect the stabilizer links.
  6. Turn the steering wheel fully to the left.
  7. Remove the power steering pump mounting bolts.
  8. Remove the power steering pump.
  9. Installation is the reverse order of removal. Torque the power steering pump mounting bolts to 36 ft. lbs. (49 Nm).

Front





Click image to see an enlarged view
Fig. Exploded view of the power steering pump-Diamante
  1. Disconnect the battery negative cable.
  2. Disconnect the return fluid line. Remove the reservoir cap and allow the return line to drain the fluid from the reservoir. If the fluid is contaminated, disconnect the ignition high tension cable and crank the engine several times to drain the fluid from the gearbox.
  3. Remove the power steering pump drive belt.
  4. Remove the pressure switch connector from the side of the pump.
  5. If the alternator is located under the oil pump, cover it with a shop towel to protect it from oil.
  6. Disconnect the high pressure hose and the return hose from the pump.
  7. Remove the pump drive belt and unbolt the pump from its bracket and remove the pump.
To install:
  1. Install the pump, wrap the belt around the pulley and tighten the bolts that secure the pump to 17 ft. lbs. (24 Nm).
  2. Replace the O-rings and connect the high pressure hose. Connect the pressure line so the notch in the fitting aligns and contacts the pump's guide bracket. Tighten the mounting nut with lockwasher to 17 ft. lbs. (24 Nm).
  3. Using a new hose clamp, connect the return line.
  4. Attach the pressure switch connector.
  5. Adjust the belt tension and tighten the adjusting bolts.
  6. Refill the reservoir and bleed the system.

Rear



  1. Disconnect the negative battery cable.
  2. Drain the power steering fluid.
  3. Remove the rear power steering pump heat protector, located on the engine side of the differential on the transaxle.
  4. Disconnect the pressure line from the pump.
  5. Disconnect the suction hose from the pump.
  6. Remove the mounting bolts and remove the pump from the transaxle.
  7. The installation is the reverse of the removal procedure. Tighten the mounting bolts to 17 ft. lbs. (24 Nm).
  8. Refill the reservoir and bleed the system.

CAUTION
Extreme caution should be taken when testing the rear steering pump. Ensure that the vehicle is supported safely and that all components are torqued to specification prior be testing.

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