A: The service procedure for radius arm begins with stripping off the front spring. When disconnecting the shock absorber from the radius arm keep in mind that you should tighten new connections to 80 Nm (59 lb-ft) torque. After removing and discarding the radius arm rearward nut and flag bolt you should reinstall them while applying torque to 350 Nm (258 lb-ft). The service of the radius arm requires you to take out its arm-to-axle nut and bolt and spring retainer and insulator while discarding these components. The technical tightening value during installation should be set to 300 Nm (221 lb-ft). Checking spring and radius arm insulators remains essential since replacements might be needed. Reverse the removal steps to finish installation while maintaining each torque value for the correct retention of components.
Q: How to service and repair the radius arm in the front suspension on Ford E-150 Econoline?
A: First procedures for front suspension radius arm service or repair require front coil spring removal with the spring insulator. Start by taking out the radius arm-to-axle bolt and nut. Then proceed with removing the spring retainer and insulator one after another. The sequence starts with removing the radius arm by unthreading the retaining hardware followed by removing the rear insulator and attaching washer before gently extracting the radius arm from its bracket for spacer and insulator removal with its washer. A thorough inspection of all rubber components should occur before installation to detect any signs of damage and you should replace those parts when necessary. Reinstall the components through a reverse order of removal steps.
Q: How should the radius arm be serviced on F-250 and F-350 to avoid significant service costs on Ford F-350 Super Duty?
A: Servicing the radius arm of F-250 and F-350 ranges requires proper care of suspension fasteners because their failure produces high maintenance expenses. Only new fasteners accepted for installation must use parts with identical numbers or approved equivalent choices since inferior or alternative designs remain unacceptable. The correct retention of assembly parts requires following precise torque settings. Start by removing the spring before discarding the front nut along with bolt from the radius arm and adding new ones while tightening them to 400 Nm (295 ft. lbs.). The next step requires you to pull out and discard the radius arm rear nut and bolt while paying attention to tightening the new rear nut at curb height level to protect the bushing and achieve a torque value of 300 Nm (222 ft. lbs.). Complete the replacement by reversing all steps used during removal of the radius arm.