Ford Rear Crossmember Instructions
A good deal of common sense must be exercised in the assembly of this unit, high quality welds are essential, we recommend Heli-ARC (TIG) Welding. If you are in doubt about your welding ability, we strongly suggest that you tack weld components in place and take them to a competent or certified welder for final welding.
1. Frame should be boxed in the area of crossmember attachment; areas adjacent to welds must be sandblasted or ground clean.
2. Set the frame on sawhorses or a suitable working area and level the frame from side to side and front to rear, using a good carpenters level.
A) Front to rear frame “rake” can be set at this time.(See Notes)
3. Square the frame by cross measuring.
A) Frame may be a parallelogram (one rail behind the other)
4. Removing existing rear crossmember:
A) Tack Weld in temporary straps across the top and bottom of frame rails about 12 inches in front of crossmember.
B) Insure that frame rails are not sucked in at the bottom; some rails are twisted in at the bottom, possibly from overuse of the running boards in the past.
C) Measure width of frame: outside measurement (OD) will be approximately 44.0 +/- 1/8″ at rear axle centerline.
D) Rails may be “bulged” out at rear axle CL; due to axle bottoming on frame, or possibly frame was rear-ended.
E) Repair or straighten as required.
Download pdf Ford Rear Crossmember Instructions
