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Power Steering Pump

REMOVAL & INSTALLATION

Navajo and B Series Pick-up

Fig. 1: Exploded view of the power steering pump used on the 3.0L engine

Fig. 2: Exploded view of the power steering pump used on the 4.0L engine

  1. Disconnect the negative battery cable.
  2. Remove some power steering fluid from the reservoir by disconnecting the fluid return line hose at the reservoir. Drain the fluid into a container and discard it.
  3. Remove the pressure hose from the pump. If equipped, disconnect the power steering pump pressure switch.
  4. On the 2.3L, 2.5L and 3.0L engines, loosen the idler pulley assembly pivot and adjusting bolts to slacken the belt tension.
  5. On the 4.0L engine, slacken belt tension by lifting the tensioner pulley in a clockwise direction. Remove the drive belt from under the tensioner pulley and slowly lower the pulley to its stop.
  6. Remove the drive belt from the pulley. If necessary, remove the oil dipstick tube.
  7. If equipped, remove the power steering pump bracket support brace.
  8. Install power steering pump pulley removal tool T69L-10300-B or equivalent. Hold the pump and rotate the tool counterclockwise to remove the pulley. Do not apply in and out pressure to the pump shaft, as internal pump damage will occur.
  9. Remove the power steering retaining bolts. Remove the power steering pump from the vehicle.

    To install:

  10. Position the pump on the bracket. Install and tighten the retaining bolts.
  11. Install the pulley removal tool and install the power steering pump pulley to the power steering pump.

    NOTE: Fore and aft location of the pulley on the power steering pump shaft is critical. Incorrect belt alignment may cause belt squeal or chirp. Be sure that the pull off groove on the pulley is facing front and flush with the end of the shaft ± 0.010 in. (0.25mm).

  12. Continue the installation in the reverse order of the removal procedure. Adjust the belt tension to specification.
  13. On the 2.3L, 2.5L and 3.0L engines torque the idler pivot pulley bolts 30–40 ft. lbs. for the 2.3L/2.5L engines and 35–47 ft. lbs. for the 3.0L engine
  14. On the 4.0L while lifting the tensioner pulley in a clockwise direction, slide the belt under the tensioner pulley and lower the pulley to the belt.
MPV
2.6L ENGINE
  1. Disconnect the negative battery cable.
  2. Place a drain pan under the pump.
  3. Loosen the idler pulley locknut and the pump adjusting bolt and remove the pump drive belt.
  4. Remove the pump pulley nut.
  5. Remove the pulley.
  6. Unplug the pressure switch coupler.
  7. Matchmark the high pressure line coupling and disconnect the line.
  8. Remove the return hose.
  9. Remove the pump-to-bracket bolts and lift out the pump.

    To install:

  10. Place the pump in position and install and tighten the mounting bolts. Connect the return and pressure lines. Install the drive pulley. Install and adjust the drive belt. Fill and bleed the system. Tighten the high pressure coupling to 23-35 ft. lbs. (31–48 Nm), aligning the high pressure coupling matchmarks. Tighten the pump mounting bolts to 23-34 ft. lbs. (31–48 Nm). Tighten the pulley nut to 29-43 ft. lbs. (39–58 Nm). Tighten the idler pulley locknut to 27-38 ft. lbs. (37–52 Nm). Connect the negative battery cable.

    Fig. 3: Power steering pump mounting — 2.6L engine

3.0L ENGINE
  1. Disconnect the negative battery cable.
  2. Loosen the idler pulley locknut.
  3. Loosen the pump adjusting bolt.
  4. Remove the drive belt.
  5. Remove the pump pulley nut.
  6. Using a puller, remove the pulley.
  7. Disconnect the pressure switch wiring connector.
  8. Place a drain pan under the pump.
  9. Matchmark the pressure line connection and disconnect it.
  10. Remove the pressure line bracket bolt.
  11. Disconnect the return line.
  12. Remove the pump-to-bracket bolts and lift out the pump.

    To install:

  13. Place the pump in position and install the mounting bolts. Connect the return and pressure line. Install the drive pulley and belt. Adjust the drive belt to the proper tension. Fill and bleed the system. Connect the negative battery cable. Observe the following torques:

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