Frame Extension-Stub Frame, Front: Installation

NOTE: Refer to SPECIFICATIONS in this section for parts identification when installing new stub frames and side rail reinforcements.

NOTE: The side rail reinforcement must be attached to the rear stub frame first during installation.

Position the front stub assembly and the side rail reinforcements on the frame assembly.
Install new bolts, washers, and nuts of the same size as the rivets that were removed.

Fig 1: Locating Bolts, Washers And Nuts Of Rivets (1 Of 2)
Courtesy of FORD MOTOR CO.

Fig 2: Locating Bolts, Washers And Nuts Of Rivets (2 Of 2)
Courtesy of FORD MOTOR CO.
NOTE: The side rail reinforcement must be attached to the rear side rails first during installation.

Weld the side rail reinforcement to the front stub frame and the rear side rails following good weld application techniques. Do not weld at the corners to minimize stress concentrations. For additional information, refer to FRAME MAINTENANCE in this section.

Fig 3: Locating Side Rail Reinforcement Weld Area
Courtesy of FORD MOTOR CO.
Restore the vehicle to operating condition.
1. Install all suspension components that were removed. For additional information, Refer to the appropriate section in Group 204 for the procedure.
2. Vehicle with 2-wheel drive, install the front axle. For additional information, refer to FRONT SUSPENSION SYSTEM - 2WD - EXCURSION, F-250 & F-350 SUPER DUTY .
3. Vehicles with 4-wheel drive, install the front drive axle. For additional information, refer to FRONT DRIVE AXLE/DIFFERENTIAL -- EXCURSION & F250-F550 SUPER DUTY .
4. Install the power steering components that were removed. For additional information, refer to POWER STEERING SYSTEM - EXCURSION & F250-F550 SUPER DUTY .
5. Install the exhaust system components that were removed. For additional information, refer to EXHAUST SYSTEM - EXCURSION - F250-F550 SUPER DUTY .
6. Install the engine. For additional information, Refer to the appropriate section in Group 303 for the procedure.
7. Vehicles with manual transmission, install the transmission. For additional information, Refer to the appropriate section in Group 308 for the procedure.
8. Vehicles with automatic transmission, install the transmission. For additional information, Refer to the appropriate section in Group 307 for the procedure.
9. Install the front bumper/body.