What is the torque spec for the radius arm bolt (item 13, part 58740) on a Ford Bronco / F-150 4x4?

The table lists the bolt (58740) at 433-460 N·m (320-340 ft-lb).

What is the torque for the radius arm stud (390678)?

The stud (item 17, part 390678) is torqued to 326-352 N·m (240-260 ft-lb).

What are the part numbers for the front lower shock brackets?

18A151 for the right-hand (RH) side and 18A153 for the left-hand (LH) side.

What are the first steps for removing the radius arm on a Bronco or F-150 4x4?

1) Raise the vehicle and position safety stands under the frame side rails with a jack (Rotunda Hydraulic Floor Jack 077 or equivalent) under the axle. 2) Remove the front wheel and tire assembly (refer to Section 04-04). 3) Disconnect the front stabilizer bar.

What is the torque for the coil spring retainer nut (N800895)?

The nut (item 21, N800895) is torqued to 70-100 N·m (52-74 ft-lb).

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Ford Bronco & F-150 4x4 Front Coil Spring, Shock & Radius Arm Exploded Diagram

Exploded parts diagram of rear shock and radius arm assembly with numbered parts and table

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Exploded parts breakdown of a Bronco/F-150 rear shock and radius-arm assembly with numbered callouts and a parts table.

AI caption November 2005 · Photo 105 of 1902

This scanned page from a Ford factory service manual covers the front suspension of the Bronco and F-150 4x4, showing an exploded parts diagram (figure F2858-N) of the front coil spring, front shock absorbers, radius arm, and axle assembly with numbered callouts 2 through 22. An accompanying parts table lists item numbers, Ford part/base numbers, descriptions, and torque specifications, including the radius arm (3A292), radius arm bolt (805033), a 433-460 N·m (320-340 ft-lb) bolt (58740), front lower shock brackets (18A151 RH, 18A153 LH), a nut and washer torqued to 52-73 ft-lb (N806085), a stud torqued 326-352 N·m / 240-260 ft-lb (390678), lower spring seat (5A307), front spring insulator (5414), retainer (5A349), nut torqued 70-100 N·m / 52-74 ft-lb (N800895), and front coil spring (5310). The lower-right section begins the 'Radius Arm, Bronco and F-150 4x4' removal procedure: raise the vehicle on safety stands under the frame rails with a jack (Rotunda Hydraulic Floor Jack 077) under the axle, remove the front wheel and tire, and disconnect the front stabilizer bar. Partial left-column text discusses gas-pressurized front shock absorbers (charged with nitrogen) and shock absorber removal steps.

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Frequently asked questions

What is the torque spec for the radius arm bolt (item 13, part 58740) on a Ford Bronco / F-150 4x4?: The table lists the bolt (58740) at 433-460 N·m (320-340 ft-lb).
What is the torque for the radius arm stud (390678)?: The stud (item 17, part 390678) is torqued to 326-352 N·m (240-260 ft-lb).
What are the part numbers for the front lower shock brackets?: 18A151 for the right-hand (RH) side and 18A153 for the left-hand (LH) side.
What are the first steps for removing the radius arm on a Bronco or F-150 4x4?: 1) Raise the vehicle and position safety stands under the frame side rails with a jack (Rotunda Hydraulic Floor Jack 077 or equivalent) under the axle. 2) Remove the front wheel and tire assembly (refer to Section 04-04). 3) Disconnect the front stabilizer bar.
What is the torque for the coil spring retainer nut (N800895)?: The nut (item 21, N800895) is torqued to 70-100 N·m (52-74 ft-lb).