WTEC II ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL
E–40 Copyright © 1998 General Motors Corp.
APPENDIX E — CONNECTOR PART NUMBERS, TERMINAL PART
NUMBERS, TOOL PART NUMBERS, AND REPAIR INSTRUCTIONS
D. Soldering Wire Into Terminal (cont’d)
4. Mount the connector in a holding fixture at a 45 degree angle. Hold the solder in the terminal cup
and apply heat to the side of the cup until the solder flows.
5. Slowly feed solder into the cup until it is half-full. When the cup is half-full, remove the solder
supply before removing the soldering iron. Half-fill all cup terminals that are to have wires
inserted.
NOTE: Feed solder slowly enough to prevent a flux gas pocket from forming. A gas pocket prevents sufficient
solder from flowing into the cup — a false fill. Correct a false fill by re-heating the cup and adding
solder.
6. Start at the lowest cup and apply heat to the side of the cup until the solder melts.
NOTE: Do not overheat the connector while soldering. If the connector gets too hot, stop work until it cools.
7. Carefully insert the stripped end of the wire into the cup until the wire bottoms in the cup.
The wire’s insulation should be approximately 1.59 mm (0.0625 inch) above the solder.
8. Maintain heat until the solder has flowed in the cup and onto the wire. Overheating can cause the
solder to wick up the stranded wire.
NOTE: Indications of a good solder connection are:
• A minimum amount of solder showing
• Wire strands are clearly outlined in the joint
• The joint is completely covered with solder
• Fillets have a smooth even contour
• Edges are feathered
• The joint is bright, smooth, and appears clean
Too little solder is better than too much. If the solder wicks up the wire, the wire may break at the point
at which the solder stops.
9. After soldering and inspecting all connections, remove flux residue with a contact cleaner.
10. Slide the grommet into place and screw on the backshell.
To Next Page
Loading...