Chrysler RAM50/D50/Arrow 1979-1993 Repair Guide

Power Steering Pump

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REMOVAL & INSTALLATION



See Figures 1, 2 and 3

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the reservoir cap and disconnect the return (lower) hose from the fluid reservoir. Drain the fluid into a clean pan.
  4.  
  5. Depending on the access for your particular vehicle, raise the vehicle and support it safely on jackstands, if necessary.
  6.  
  7. If the pulley is to be removed from the pump, loosen the bolts now. Leave them finger-tight in place.
  8.  
  9. Loosen the pump mounting bolts, move the pump towards the engine and remove the belt.
  10.  
  11. Disconnect the pressure hose at the top of the pump and the suction hose at the side of the pump. Allow the fluid to drain into the container.
  12.  
  13. Remove the pump attaching bolts and lift the pump from the brackets.
  14.  

To install:
  1. Make certain the bracket-to-engine bolts are tight, then install the pump to the brackets.
  2.  
  3. If the pulley was removed, reinstall it and tighten its nuts securely.
  4.  
  5. Install the drive belt and adjust its tension correctly-refer to General Information And Maintenance .
  6.  
  7. Connect the pressure and return hoses. Make sure the hoses are not twisted and do not contact any other parts so as to avoid chafing. When installing the pressure hose, make certain that the notch of the fitting contacts the suction connector of the oil pump. The pressure hose may use O-rings to help it seal, remove the old ones and install new ones before installation.
  8.  
  9. Pour power steering fluid into the reservoir to the lower mark, then bleed the system.
  10.  
  11. Inspect all the fluid line connections for any sign of leakage.
  12.  



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Fig. Fig. 1: Power steering oil pump removal and installation components-1983-93 models



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Fig. Fig. 2: Remove these power steering pump mounting bolts and hoses



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Fig. Fig. 3: When installing the pressure hose, make certain the notch is located in the correct position

SYSTEM BLEEDING



  1. Remove the reservoir cap and pour fluid in until it reaches the lower mark, if needed.
  2.  
  3. With the coil high tension line disconnected at the coil, operate the starter intermittently (15 or 20 seconds each time) and turn the steering wheel all the way from left to right and back several times. Do this 5 or 6 times while an assistant keeps watch on the fluid level in the reservoir.
  4.  


WARNING
Do not be tempted to bleed the system with the engine idling. The air in the system will be broken up and absorbed into the fluid, resulting in a noisy, foamy mess. During the bleeding procedure, replenish the fluid so that the level never falls below the lower level on the reservoir.

  1. Once the preliminary bleeding is done, the fluid level should stay fairly constant as the wheel is turned while cranking the motor. When this is true, the coil wire may be reconnected and the engine started. Only run the engine at idle; high rpm will not help.
  2.  
  3. With the engine running, turn the wheel from lock to lock several times and observe the fluid level in the reservoir. The level should not change more than about 0.20 in. (5mm) throughout the full travel of the wheel. The fluid should not look cloudy or milky.
  4.  

If the system still contains air, the pump will be noisy during operation. This noisy operation can damage the pump. If the fluid level changes markedly during steering wheel movement, the system still contains air. If the fluid level rises suddenly after the engine has been shut off, the system still contains air.

  1. Shut the engine OFF , fill the reservoir up to the full line, if needed. Install the reservoir cap.
  2.  

STEERING WHEEL CENTERING



Determining Off Center

See Figures 4 and 5

To determine whether the steering wheel is off center or not you will need these supplies, a piece of chalk, tape and a ruler.

  1. Drive straight ahead on a unchambered level surface.
  2.  



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Fig. Fig. 4: Mark the steering wheel hub and column with a chalk or tape line.



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Fig. Fig. 5: Hold a ruler next to the rim, then steer the steering wheel until it is in the desired center position

  1. When the vehicle's wheel are pointing straight ahead, (carefully and at a slow speed), mark the steering wheel hub and column with a chalk or tape line.
  2.  
  3. Stop the vehicle and line up the marks on the hub and column cover.
  4.  
  5. Place a tape strip or mark on the steering wheel rim.
  6.  
  7. Hold a ruler next to the rim, then steer the steering wheel until it is in the desired center position.
  8.  
  9. Record the distance the strip or mark on the rim has moved. This is how far the steering wheel is off center. If it is more than 5 / 8 (16mm) off center, it can be centered by indexing it ten degrees towards the center.
  10.  

Indexing the Steering Wheel See Figure 6

The steering wheel shaft has 36 splines, allowing the steering wheel to be indexed in ten degree increments.

  1. Remove the steering wheel as described earlier in this section.
  2.  
  3. Without disturbing the position of the steering wheel shaft, reinstall the wheel as near on center as possible.
  4.  



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Fig. Fig. 6: Indexing the steering wheel to center it

Percision Steering Wheel Centering See Figures 7 and 8

In general, the tie rods are adjusted to steer the front wheels in the same direction that the steering wheel is off center. If the steering wheel is off center to the left, center it by adjusting the tie rods to make the front wheels steer toward the left. If the steering wheel is off center to the right, center it by adjusting the tie rods to make the front wheels steer toward the right.

  1. Retain the tie rods with a wrench while loosening the locking nuts at least 1 / 4 turn.
  2.  

  1. Counting the number of turns, hold the tie rod end with a wrench and turn the tie rod the desired number of turns. Adjust both rods equally in the same direction to center the steering wheel.
  2.  

By turning the tie rods1/16of 2° a turn, an adjustment of 2° (at the steering wheel center) or 0.25 in. (6mm) at the steering wheel rim can be made.



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Fig. Fig. 7: Adjust the tie rods equally to the left to center the steering wheel



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Fig. Fig. 8: By turning the tie rods the steering wheel will be centered in 10 degree increments

 
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