REMOVAL & INSTALLATION
- Remove the fan shroud.
- Unfasten the nut from the center of the pump pulley.
Use the drive belt as a brake to keep the pulley from rotating.
- Withdraw the drive belt.
- Remove the pulley and the woodruff key from the pump shaft.
- Detach the intake and outlet hoses from the pump reservoir.
Tie the hose ends up high so the fluid cannot flow out of them. Drain or plug the pump to prevent fluid leakage.
- Remove the bolt from the rear mounting brace.
- Remove the front bracket bolts and withdraw the pump.
- Install the pump and tighten the pump pulley mounting bolt to 25-39 ft. lbs.
- Adjust the pump drive belt tension. The belt should deflect 8-10mm under thumb pressure applied midway between the air pump and power steering pump.
- Fill the reservoir with Dexron®II automatic transmission fluid. Bleed the air from the system.
See Figure 1
- Disconnect the the high tension lines at the distributor and then disconnect the air lines at the air valve.
- Remove some fluid from the reservoir tank.
- Disconnect the return hose at the power steering pump.
- Disconnect the pressure line at the pump.
- Loosen the drive belt pulley retaining nut. Loosen the idler pulley and adjusting bolt and remove the drive belt.
- Remove the drive pulley and woodruff key.
- Remove the power steering pump.
- Install the pump in its bracket and tighten the nuts to 29 ft. lbs. (39 Nm).
- Install the drive pulley and belt. Tighten the pulley bolt to 32 ft. lbs. (43 Nm) and check the drive belt tension.
- Connect the pressure line to the pump and tighten the flare nut to 33 ft. lbs. (44 Nm).
- Connect the return hose.
- Connect the air hoses and the high tension leads.
- Fill the reservoir with fluid, bleed the system and check for leaks.
- Raise the front of the truck and support it securely with jackstands.
- Fill the pump reservoir with Dexron®II automatic transmission fluid.
- Rotate the steering wheel from lock to lock several times. Add fluid as necessary.
- With the steering wheel turned fully to one lock, crank the starter while watching the fluid level in the reservoir.
Do not start the engine. Operate the starter with a remote starter switch or have an assistant do it from inside the truck. Do not run the starter for prolonged periods.
- Repeat Step 4 with the steering wheel turned to the opposite lock.
- Start the engine. With the engine idling, turn the steering wheel from lock to lock several times.
- Lower the front of the truck and repeat Step 6.
- Center the wheel at the midpoint of its travel. Stop the engine.
- The fluid level should not have risen more than 5mm. If it does, repeat Step 7.
- Check for fluid leakage.