Mitsubishi Galant/Mirage/Diamante 1990-2000

Power Steering Pump

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REMOVAL & INSTALLATION



Mirage


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Fig. Exploded view of the power steering pump-Mirage

  1. Drain the power steering system as follows:
  2.  

  1. Disconnect the return hose at the reservoir and place into a suitable container.
  2.  
  3. Disable the ignition system. While cranking the engine, turn the wheels several times, until system has been drained.
  4.  

  1. Disconnect the battery negative cable.
  2.  
  3. Remove the pressure switch connector from the side of the pump.
  4.  
  5. If the alternator is located under the oil pump, cover it with a shop towel to protect it from oil.
  6.  
  7. Disconnect the pressure line.
  8.  
  9. Remove the steering pump drive belt and the water pump pulley drive belt.
  10.  
  11. Remove the water pump pulley.
  12.  
  13. Remove the bolts that secure the oil pump, then remove the pump from its bracket.
  14.  

To install:

  1. Install the power steering pump and tighten the mounting bolts to specifications.
  2.  
  3. Install the water pump pulley and tighten the mounting bolts 14 ft. lbs. (19 Nm).
  4.  
  5. Install and adjust the drive belts.
  6.  
  7. 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).
  8.  
  9. Connect the return line.
  10.  
  11. Attach the pressure switch connector.
  12.  
  13. Refill the reservoir and bleed the system.
  14.  

1990-93 Galant
FRONT


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Fig. Exploded view of the front power steering pump-1990-93 Galant

  1. Disconnect the battery negative cable.
  2.  
  3. Remove the pressure switch connector from the side of the pump.
  4.  
  5. If the alternator is located under the oil pump, cover it with a shop towel to protect it from oil.
  6.  
  7. Disconnect the return fluid line.
  8.  
  9. 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.
  10.  
  11. Disconnect the pressure line.
  12.  
  13. Remove the pump drive belt.
  14.  
  15. Remove the pump mounting bolts and remove the pump from the engine.
  16.  

To install:

  1. Install the pump, wrap the belt around the pulley and loosely tighten the mounting bolts.
  2.  
  3. 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.
  4.  
  5. Connect the return line. Attach the pressure switch connector.
  6.  
  7. Adjust the belt tension and tighten the adjusting bolts to 25-33 ft. lbs. (35-45 Nm).
  8.  
  9. Refill the reservoir and bleed the system.
  10.  

REAR


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Fig. Exploded view of the rear power steering pump-1990-93 Galant

  1. Raise the vehicle and support safely.
  2.  
  3. Drain the differential gear oil.
  4.  
  5. Matchmark and remove the rear driveshaft.
  6.  
  7. Remove the rear halfshafts.
  8.  
  9. Remove the center exhaust pipe and muffler assembly, as required.
  10.  
  11. Disconnect the pressure and suction hoses from the fittings on the pump.
  12.  
  13. The large mounting bolts that hold the differential carrier support plate to the underbody may use self-locking nuts. Before removing them, support the rear axle assembly in the middle with a transaxle jack. Remove the nuts, then remove the support plate(s) and the square dynamic damper from the rear of the carrier.
  14.  
  15. Lower the differential carrier and remove from the vehicle.
  16.  
  17. Remove the pump retaining bolt and remove the pump from the rear differential assembly.
  18.  

To install:

  1. Install the pump and tighten the mounting bolt to 14-20 ft. lbs. (19-28 Nm).
  2.  
  3. Raise the rear differential carrier into position and install support member bolts. Replace all self-locking nuts. Tighten all mounting nuts and bolts as follows:
  4.  
  5. Upper support plate to carrier bolts: 72-87 ft. lbs. (100-120 Nm)
  6.  
  7. Support member/dynamic damper to carrier bolts: 58-72 ft. lbs. (80-100 Nm)
  8.  
  9. Differential support member mounting bolt nuts: 80-94 ft. lbs. (110-130 Nm)
  10.  
  11. Connect the pressure and suction lines to the pump.
  12.  
  13. Install new circlips on both rear driveshafts and install.
  14.  
  15. Install the propeller shaft and tighten the mounting hardware to 22-25 ft. lbs. (30-35 Nm).
  16.  
  17. Install the center exhaust pipe and muffler.
  18.  
  19. Lower the vehicle. With the vehicle level, fill the rear differential.
  20.  
  21. Fill the power steering system and properly bleed.
  22.  

1994-00 Galant
2.4L ENGINE


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Fig. Exploded view of the power steering pump-1994-00 Galant with 2.4L engine

  1. Disconnect the battery negative cable.
  2.  
  3. Loosen and remove the power steering pump drive belt.
  4.  
  5. Remove the pressure switch connector from the side of the pump.
  6.  


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.  
  3. Disconnect the pressure line.
  4.  
  5. Unbolt and remove the pump from the mounting bracket.
  6.  

To install:

  1. Install the pump, wrap the belt around the pulley and lightly tighten the mounting bolts.
  2.  
  3. 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).
  4.  
  5. Connect the return line and secure with the clamp.
  6.  
  7. Attach the pressure switch connector.
  8.  
  9. Adjust the power steering belt for proper tension and tighten the adjusting bolts.
  10.  
  11. Reconnect the negative battery cable.
  12.  
  13. Refill the reservoir and bleed the system.
  14.  

3.0L ENGINE
  1. Disconnect the battery negative cable.
  2.  
  3. 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.
  4.  
  5. Remove the power steering pump drive belt.
  6.  
  7. Remove the pressure switch connector from the side of the pump.
  8.  
  9. If the alternator is located under the oil pump, cover it with a shop towel to protect it from oil.
  10.  
  11. Disconnect the high pressure hose and the return hose from the pump.
  12.  
  13. Remove the pump drive belt and unbolt the pump from its bracket and remove the pump.
  14.  

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.  
  3. 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).
  4.  
  5. Using a new hose clamp, connect the return line.
  6.  
  7. Attach the pressure switch connector.
  8.  
  9. Adjust the belt tension and tighten the adjusting bolts.
  10.  
  11. Refill the reservoir and bleed the system.
  12.  

Diamante
FRONT


Click image to see an enlarged view

Fig. Exploded view of the power steering pump-Diamante

  1. Disconnect the battery negative cable.
  2.  
  3. 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.
  4.  
  5. Remove the power steering pump drive belt.
  6.  
  7. Remove the pressure switch connector from the side of the pump.
  8.  
  9. If the alternator is located under the oil pump, cover it with a shop towel to protect it from oil.
  10.  
  11. Disconnect the high pressure hose and the return hose from the pump.
  12.  
  13. Remove the pump drive belt and unbolt the pump from its bracket and remove the pump.
  14.  

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.  
  3. 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).
  4.  
  5. Using a new hose clamp, connect the return line.
  6.  
  7. Attach the pressure switch connector.
  8.  
  9. Adjust the belt tension and tighten the adjusting bolts.
  10.  
  11. Refill the reservoir and bleed the system.
  12.  

REAR
  1. Disconnect the negative battery cable.
  2.  
  3. Drain the power steering fluid.
  4.  
  5. Remove the rear power steering pump heat protector, located on the engine side of the differential on the transaxle.
  6.  
  7. Disconnect the pressure line from the pump.
  8.  
  9. Disconnect the suction hose from the pump.
  10.  
  11. Remove the mounting bolts and remove the pump from the transaxle.
  12.  
  13. The installation is the reverse of the removal procedure. Tighten the mounting bolts to 17 ft. lbs. (24 Nm).
  14.  
  15. Refill the reservoir and bleed the system.
  16.  


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.

SYSTEM BLEEDING



Front
  1. Raise the vehicle and support safely.
  2.  
  3. Manually turn the pump pulley a few times.
  4.  
  5. Turn the steering wheel all the way to the left and to the right 5 or 6 times.
  6.  
  7. Disconnect the ignition high tension cable and, while operating the starter motor intermittently, turn the steering wheel all the way to the left and right 5-6 times for 15-20 seconds. During bleeding, make sure the fluid in the reservoir never falls below the lower position of the filter. If bleeding is attempted with the engine running, the air will be absorbed in the fluid. Bleed only while cranking.
  8.  
  9. Connect ignition high tension cable, start engine and allow to idle.
  10.  
  11. Turn the steering wheel left and right until there are no air bubbles in the reservoir. Confirm that the fluid is not milky and the level is up to the specified position on the gauge. Confirm that there is very little change in the fluid level when the steering wheel is turned. If the fluid level changes more than 0.2 in. (5mm), the air has not been completely bled. Repeat the process.
  12.  

Rear
  1. Bleed the front steering system.
  2.  
  3. Start the engine and let it idle.
  4.  
  5. Loosen the bleeder screw on the left side of the control valve and install special tool MB991230 to the bleeder.
  6.  
  7. Turn the steering wheel all the way to the left, then immediately turn it halfway back. Confirm that air has discharged with the fluid.
  8.  
  9. Repeat Step 4 two or three times as required, to remove all air from the rear system. Stop the engine.
  10.  
  11. Loosen the power cylinder (rear steering gear) bleeder screw about 1 / 8 turn and install the same special tool with the rotation prevention metal fixtures to prevent the bleeder from opening more.
  12.  
  13. Start the engine and run to 50 mph to circulate the fluid.
  14.  
  15. Maintain a speed of 20 mph and turn the steering wheel back and forth. Air should be discharged through the tube of the special tool and into the oil reservoir.
  16.  
  17. Repeat until all air is removed from the power cylinder.
  18.  

 
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