Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1990RANGER 4WD L4-140 2.3L SOHCREPAIR AND DIAGNOSISTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSLUG NUTS - PROPER TORQUEING PROCEDURE
1990 Ford Ranger 4WD L4-140 2.3L SOHC
Lug Nuts - Proper Torqueing Procedure
1990 Ford Ranger 4WD L4-140 2.3L SOHCSECTION Lug Nuts - Proper Torqueing Procedure
90ford38
^ BRAKE SHUDDER - ROTOR DISTORTED - OVERTIGHTENED LUG NUTS
^ WHEEL - NUT INSTALLATION - SERVICE TIP
Article No. 90-19-9
FORD: 1986-91 CROWN VICTORIA, ESCORT, MUSTANG, TAURUS, TEMPO, THUNDERBIRD 1988-91 FESTIVA 1989-91 PROBE
LINCOLN-MERCURY: 1986 CAPRI
1986-87 LYNX 1986-91 CONTINENTAL, COUGAR, GRAND MARQUIS, MARK VII, SABLE, TOPAZ, TOPAZ, TOWN CAR 1987-89 TRACER 1991 CAPRI, TRACER
MERKUR: 1985-88 XR4TI 1988-89 SCORPIO
LIGHT TRUCK: 1986-90 BRONCO II 1986-91 AEROSTAR, BRONCO, ECONOLINE, F-150-350 SERIES, RANGER 1988-91 F SUPER DUTY 1991 EXPLORER
ISSUE: The use of a power impact wrench to install wheel nuts provides minimal torque control. Undertightening may allow the lug nuts to loosen, and can result in the wheel separating from the vehicle. Overtightening of wheel nuts may cause brake rotor distortion that could result in a brake shudder. Overtightening may cause distortion of the wheel. This can result in a change in the diameter of the center (axle) hole and make it difficult to remove from the axle it is mounted on or difficult or impossible to install on another axle with a smaller center hole diameter.
ACTION: Use a manual torque wrench to tighten wheel nuts. Refer to the approriate Shop Manual for specific torque values.
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 306000, 301000
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.