R.R. ROOF PANEL

Operation 7210E28 · External parts

Removing

Check if any of the connected parts are deformed by checking body alignment dimensions. Use appropriate measurement tools (reference rigs, templates or gauges).

Straighten the body if necessary.

1. Use a hacksawing machine to follow the cutting lines shown in the figure.

2. Remove the roof panel.

Use a rotary brush to remove paint to gain access to the weld spots.

1. Use a chamfering machine to remove the weld spots shown in the figure.

Drill out any weld spots not accessible to the chamfering machine.

Use a chisel and mallet to remove spots drilled previously.

Trim the cut edges from the car.

Straighten the car edges using a mallet and profiled stake.

Use a grinding wheel to remove the spot weld residues.

Use a rotary brush to clean treated areas.

1. Apply the electroweldable paint finish.

Refitting

1. Use a grinding wheel to remove the corrosion-proofing from around the inner and outer edges of the replacement roof panel.

Offer up the replacement part and check carefully that it matches.

2. Drill out the holes indicated.

Apply electric weld paint finish to the edges to be welded.

1. Offer up the roof panel and secure it using self-locking clamps.

Check the alignment and ensure the surrounding gaps are even.

1. Use a spot welder to weld the areas shown in the figure.

2. Use a MIG welder to fill the holes made previously.

Correct any deformations in the panel using a profiled stake and mallet.

Use a grinding wheel to level the welds

Use a rotary brush to clean the newly-welded areas.

1. Apply rust-proofing to newly-welded areas.

Seal the joint lines between the part and the car.