Underbody Misalignment Check

The dimensions of the underbody must be restored in repairing major body damage to provide correct front and rear wheel geometry. Refer to the Underbody Dimensions diagram for the underbody dimensions. All the dimensions are detailed to the centerline of existing holes in the underbody assembly. Once the frame and suspension members are aligned, other operations in this section can be performed.

Underbody Dimensions

NOTE: All dimensions are true point-to-point in inches. Measuring can be performed using the Rotunda Complete Laser Measuring System 190-01025 or equivalent.

Door openings are checked in the same manner as the body. Horizontal, vertical, and diagonal checking points are established on all four sides of the door opening that is being measured.

F-150 Regular Cab Short Bed (4x2)

MEASURING POINTS

Item	Description
1	Bolt
2	Bolt
3	Stud
4	Bolt
5	Rivet
6	Stud
7	Rivet
8	Stud
9	Rivet
10	Stud
11	13mm (0.51-Inch) Hole
12	12mm (0.47-Inch) Hole
13	12mm (0.47-Inch) Hole
14	12mm (0.47-Inch) Hole
15	Rivet
16	11mm (0.43-Inch) Hole
17	12mm (0.47-Inch) Hole
18	Rivet
19	8mm (0.3-Inch) Hole
20	Stud
21	Rivet

F-150 Super Cab Short Bed (4x2)

MEASURING POINTS

Item	Description
1	12mm (0.47-Inch) Hole
2	Bolt
3	12mm (0.47-Inch) Hole
4	Bolt
5	Stud
6	Rivet
7	Stud
8	Rivet
9	Stud
10	7mm (0.27-Inch) Hole
11	13mm (0.51-Inch) Hole
12	12mm (0.47-Inch) Hole
13	8mm (0.31-Inch) Hole
14	12mm (0.47-Inch) Hole
15	Rivet
16	11mm (0.43-Inch) Hole
17	Rivet
18	8mm (0.31-Inch) Hole
19	Stud
20	Rivet

F-150 Regular Cab Short Bed (4x4)

MEASURING POINTS

Item	Description
1	15mm (0.59-Inch) Hole
2	Bolt
3	15mm (0.59-Inch) Hole
4	Bolt
5	Stud
6	Rivet
7	Stud
8	Rivet
9	Stud
10	8mm (0.31-Inch) Hole
11	12mm (0.47-Inch) Hole
12	12mm (0.47-Inch) Hole
13	12mm (0.47-Inch) Hole
14	12mm (0.47-Inch) Hole
15	Rivet
16	12mm (0.47-Inch) Hole
17	11mm (0.43-Inch) Hole
18	Rivet
19	Stud
20	Rivet

F-150 Regular Cab Long Bed

MEASURING POINTS

Item	Description
1	15mm (0.59-Inch) Hole
2	Bolt
3	15mm (0.59-Inch) Hole
4	Bolt
5	Stud
6	Rivet
7	Stud
8	Rivet
9	Stud
10	8mm (0.31-Inch) Hole
11	12mm (0.47-Inch) Hole
12	12mm (0.47-Inch) Hole
13	12mm (0.47-Inch) Hole
14	Rivet
15	12mm (0.47-Inch) Hole
16	8mm (0.31-Inch) Hole
17	12mm (0.47-Inch) Hole
18	11mm (0.43-Inch) Hole
19	Rivet
20	8mm (0.31-Inch) Hole
21	Stud
22	Rivet

F-150 Super Cab Long Bed (4x2)

MEASURING POINTS

Item	Description
1	15mm (0.59-Inch) Hole
2	Bolt
3	15mm (0.59-Inch) Hole
4	Bolt
5	Stud
6	Rivet
7	Stud
8	Rivet
9	Stud
10	12mm (0.47-Inch) Hole
11	Stud
12	12mm (0.47-Inch) Hole
13	8mm (0.31-Inch) Hole
14	12mm (0.47-Inch) Hole
15	8mm (0.31-Inch) Hole
16	12mm (0.47-Inch) Hole
17	11mm (0.43-Inch) Hole
18	Rivet
19	8mm (0.31-Inch) Hole
20	Stud
21	Rivet

F-150 Super Cab Long Bed (4x4)

MEASURING POINTS

Item	Description
1	15mm (0.59-Inch) Hole
2	Bolt
3	15mm (0.59-Inch) Hole
4	Bolt
5	Stud
6	Rivet
7	Stud
8	Rivet
9	Stud
10	12mm (0.47-Inch) Hole
11	Stud
12	12mm (0.47-Inch) Hole
13	8mm (0.31-Inch) Hole
14	12mm (0.47-Inch) Hole
15	12mm (0.47-Inch) Hole
16	11mm (0.43-Inch) Hole
17	Rivet
18	8mm (0.31-Inch) Hole
19	Stud
20	Rivet