Installation Procedure
- Use a clean shop rag to clean the power steering assist motor assembly mating surface on the steering gear housing so it is free of old grease or loose particles
- Install the new o-ring seal (1) to the power steering assist motor assembly (2).
- Add a light film of lithium grease around the nose of the power steering assist motor assembly.
- Install the NEW belt to the steering gear housing large pulley.
- While being careful not to allow the belt to come into contact with the grease inside of the steering gear housing, install the power steering assist motor assembly (1) to the steering gear housing and place the belt on the power steering assist motor assembly pulley.
- Rotate the power steering assist motor assembly (1) clockwise in the steering gear housing, while making sure the screw holes and slotted holes are aligned properly.
- Install the NEW belt pivot bolt (1) and hand tighten, ensuring that the electric power steering motor control module can still rotate.
- Install wrench to the steering gear input shaft and rotate input shaft 90 degrees in both directions to seat belt. Ensure that the steering gear input shaft is returned to the center position.
- Install a suitable clamp or add 5 washers to the lower bolt so the power steering assist motor assembly can be drawn into the gear housing. This will ensure that the power steering assist motor assembly is flush with the steering gear steering gear housing.
- Tension the belt in the following manner:
- Install the GE-50576-A gauge (1) on the steering gear housing and position the microphone 1/4 inch away from the edge of the belt.
- Using an allen wrench or your finger, strum the belt in the center between the two pulleys and record the measurement. Perform this step 3 times to get an average HZ reading.
- If the average reading is at 300 Hz to 330 Hz, continue to next step. If reading is below or above the allowable specification, rotate the power steering assist motor assembly slightly (clockwise to tighten and counter clockwise to loosen) and take another set of readings. Repeat this step until belt is tightened to the specified range and then tighten pivot bolt.
- Tighten the power steering assist motor assembly pivot bolt to 22 (16 lb ft) and recheck belt tension using GE-50576-A gauge. If the reading is not 300 Hz - 330 Hz, loosen the power steering assist motor assembly pivot bolt and readjust the belt tension. Refer to the belt tension steps above. If within range continue to next step.
- Remove the clamp or bolt and washers holding the power steering assist motor assembly to the steering gear housing.
- With a clean rag, clean the steering gear housing mating surfaces between the pinion and outboard housings so they are free of loose particles.
- Remove the rag that you installed to cover the large rack pulley and do not allow any loose particles to fall into the gear housing.
- Inspect the outboard steering gear housing seal (1) for damage. If damaged replace the seal.
- Ensure that the steering gear housing seal is in position and that both the dowel pins (2) are secure.
- Install the steering gear housing (1) to the steering gear assembly.
- Install the NEW steering gear housing bolts (1) and hand tighten.
- Tighten the steering gear housing fasteners in the following sequence:
- Tighten M6 bolts (1) to 10 (7 lb ft).
- Tighten M8 bolts (2) to 22 (16 lb ft).
- Install the torque sensor wire connector (1) to the power steering assist motor controller module. Ensure the sensor wire connector lock is engaged.
- Install the RH inner tie rod. Refer to Steering Linkage Inner Tie Rod Replacement (NXC) , Steering Linkage Inner Tie Rod Replacement (NJ2) .
- Remove the belt drive rack and pinion steering gear from vise.
- Install the steering gear to the vehicle. Refer to Electric Belt Drive Rack and Pinion Steering Gear Replacement (FWD, LFX With NJ2) .
- Perform the power steering control module setup procedure. Refer to Power Steering Control Module Programming and Setup (NXC) .
Ensure that care is taken not to pinch or roll the o-ring while installing power steering assist motor assembly to gear housing.
Before adding tension to the belt, ensure that the belt is centered on the large pulley.
Care should be taken clamping on the power steering assist motor assembly so as not to damage the power steering assist motor assembly cover or connector headers.
Ensure the torque sensor wiring harness is fully connected and seated to the electric power steering motor controller module. If the harness connector is not fully engaged, damage to the module will occur when the key is turned on and replacement of the module will be necessary.
The torque sensor wiring harness is not repairable. Do not attempt to repair the harness under any circumstances. If the harness is damaged then the steering gear must be replaced.
During removal and installation, the electric belt drive rack and pinion steering gear is extremely susceptible to damage. Dropping or prying on the electric belt drive motor controller module and/or electric belt drive rack and pinion steering gear may cause damage. If damage occurs, the electric belt drive motor controller module and/or electric belt drive rack and pinion steering gear will need to be replaced.
Care must be taken during removal and installation of the electric belt drive rack and pinion steering gear to not hit or break the electric belt drive motor controller module or module harness connectors. If the module or connectors are damaged, the electric belt drive motor controller module will need to be replaced.