8-33 REMOVAL OF HARNESS.
a. Disconnect the clamps that secure the wires to the engine and accessories.
b. Loosen the coupling nuts at the spark plugs and remove the insulators from the spark plug barrel well.
Use caution when withdrawing the insulator so as not to damage the insulator spring.
c. Place a guard over the harness insulators.
d. Remove the harness assembly terminal plate from the magneto.
e. Remove the harness from the airplane.
18-34. DISASSEMBLY OF HARNESS.
a. To remove spring, Slick M-1455, from a damaged lead, turn the spring counterclockwise while pulling
gently. This will remove the spring and the M-1498 Electrode Screw from the end of the coiled conductor.
b. To separate the spring and the screw, hold the electrode screw with a pair of pliers and turn the spring
clockwise until it is through the threaded portion.
c. Remove the insulator sleeve from the end of the wire.
d. To remove a lead from the M-l 569 Plug Wire Housing, use diagonals or cutting pliers and cut the lead
off close to the housing. A drift or punch can be used to tap the ferrule loose from the housing.
—NOTE —
Do not reuse the M-1458 Drive Ferrule.
—NOTE—
Further service on the Slick harness will require the use of Slick
M-1495 Service Tool Kit, obtained from:
SLICK ELECTRO, INC.
530 Blackhawk Park Avenue
Rockford, Illinois 61101
8-35. HARNESS ASSEMBLY INSTRUCTIONS.
a. Cut a piece of harness wire to the length required. Do not stretch the wire when measuring it.
b. On the magneto end, make a final mark 0.75 inch for slick magnetos or .562 for Bendix magnetos from
the end of the wire. A 0.937 inch mark should be made from the spark plug end of the wire.
c. Flare out shielding, then without allowing any of the shielding to fold under, insert Slick M-1743 Stripping
Tool under the braided shielding. Refer to Figure 8-14.
d. Make sure.the stripping tool is inserted past the cutting mark, then cut the shielding with a sharp knife
using a rolling motion and remove the shielding and stripping tool. Take care not to cut the silicone insulation.
Refer to Figure 8-15.
e. Cut exposed insulation 0.062 inch and .125 inch for Bendix magnetos back from end and roll the
insulation clockwise to remove it. Do not pull the insulation off the wire. Trim the end of the coiled conductor to
make a clear hole for inserting the stud. Refer to Figure 8-16.
f. Using M-1742 Pin Vise, insert M-1741 Drill (#72 drill). Drill out the silicone rubber from inside of coiled
conductor approximately 0.375 inch deep. Refer to Figure 8-17.
g. On spark plug end of wire install M-1673 Nut followed by M-1671 Female Taper Hex Ferrule. Refer to
flare out the shielding so a drive ferrule can be inserted. Take care not to cut the silicone insulation with the
sharp braiding while the wire is being rotated. (Refer to Figure 8-19.)
PIPER AIRCRAFT
PA-28-161 CADET
AIRPLANE MAINTENANCE MANUAL
Issued: FEBRUARY. 28, 1989
POWER PLANT
1K5