TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
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CR/Collision Repair — Installation, page 13

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Installation — MK4 Supra Collision Repair, page 13
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Page text (OCR transcript)
INSTALLATION

PRE–WELDING MEASUREMENTS
Always take measurements before installing underbody or engine components to insure correct assembly. After installation, confirm proper fit.

WELDING PRECAUTIONS
1. The number of welding spots should be as follows.
Spot weld: 1.3 x No. of manufacturer's spots.
Plug weld: More than No. of manufacturer's plugs.

WRONG

2. Plug welding should be done with a MIG (Metal Inert Gas) welder. Do not gas weld or braze panels at areas other than specified.

POST–WELDLNG REFINISHING
1. Always check the welded spots to insure they are secure.
2. When smoothing out the weld spots with a disc grinder, be careful not to grind off too much as this–would weaken the weld.

OKAY          WRONG

Safety Glass

Body Measurement Diagrams

SPOT WELD LOCATIONS
Try to avoid welding over previous spots.

Oil spot Locations
New Spot Locations

Tip Cutter

SPOT WELDING PRECAUTIONS
1. The shape of the welding tip point has an effect on the strength of the weld.
2. Always insure that the seams and welding tip are free of paint.