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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 130 (Steering System - Electronic Power Assist Steering - F150) >> Interactive Diagnostics >> Pinpoint Tests >> Pinpoint Test K - Damaged Steering Gear Bellows Boots >> Normal Operation

Normal Operation

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The electric power assist steering (EPAS) gear is very susceptible to water, moisture, dust, rust and other contaminates. If a damaged boot is suspected the inner tie rods and steering rack should be inspected for contamination. If contamination is found a new EPAS gear should be installed.

New bellows boots and clamps must be installed whenever they are removed. To avoid unnecessary repairs address all other known concerns, DTCs and customer concerns before removing the bellows boots and inspecting the steering gear.

NOTE: When installing new bellows boots and clamps, apply new lubricant as instructed to prevent water contamination or damage may result to the EPAS gear. For complete information refer to the POWER STEERING SYSTEM - F150 Tie Rod - Inner Removal and Installation procedure .
  1. K1: INSPECT THE INNER TIE RODS AND STEERING RACK FOR CORROSION 

    Remove the outer tie rod and bellows boot. Refer to POWER STEERING SYSTEM - F150 .

    The following inspection must be carried out on BOTH sides of the steering rack:

    • Turn the steering wheel in one direction all the way until it stops to expose the steering rack.
    • Inspect the rack, inner tie rod and gear housing for rust, moisture, corrosion and other signs of harmful contamination.

    Is the rack, inner tie rod and gear housing free of moisture, rust, corrosion and other harmful contamination? 

    Yes No
    INSTALL a new steering gear boot bellows. REFER to POWER STEERING SYSTEM - F150 . ADJUST the front toe setting. REFER to WHEELS & TIRES -- F150 . INSTALL a new EPAS gear.
    REFER to POWER STEERING SYSTEM - F150 .