Lincoln Navigator: Engine System - General Information / Piston Inspection. General Procedures

Lincoln Navigator 2018-2025 Workshop Manual / Engine / Engine System - General Information / Piston Inspection. General Procedures

Inspection

NOTE: Do not use a caustic cleaning solution or a wire brush to clean the pistons or damage can occur.
Clean and inspect the (1) ring lands, (2) pin bosses, (3) skirts and the (4) tops of the pistons. If wear marks, scores or glazing is found on the piston skirt, check for a bent or twisted connecting rod.

NOTE: Make sure the oil ring holes are clean.
Using a Piston Ring Groove Scraper, clean the piston ring grooves.

Piston Diameter. General Procedures

Check Measure the piston diameter 90 degrees from the piston pin and piston diameter (DN) height down from the top of the piston at the point indicated...

Piston Ring End Gap. General Procedures

Special Tool(s) / General Equipment Feeler Gauge Check NOTE: Refer to the appropriate Section 303-01 for the specification. NOTE: Use care when fitting piston rings to avoid possible damage to the piston ring or the cylinder bore...

Other information:

Lincoln Navigator 2018-2025 Workshop Manual: Collision Warning and Collision Avoidance System. Diagnosis and Testing

DTC Charts Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation). DTC Chart: Head Up Display (HUD) Module DTC Charts: HUD Module DTC Description Actions All HU..

Lincoln Navigator 2018-2025 Workshop Manual: Cowl Panel Grille. Removal and Installation

Removal Both sides Remove the wiper pivot arm. Refer to: Windshield Wiper Pivot Arm (501-16 Wipers and Washers, Removal and Installation). LH side Lift the cowl trim panel to release the underside pin-type retainers. Disconnect the windshield washer tube and remove the cowl panel grille. ..

Diagnostic Methods. Description and Operation

This document provides critical diagnostic knowledge required for successful repair outcomes. It identifies technical competencies expected by users of this manual.

Ford Diagnostic Assumptions

Ford diagnostics assume the vehicle concern described by the test title is currently present. Exceptions to this rule are noted in each test. Do not replace modules or other components as directed by a diagnostic if the concern is not present at the time of testing.