Piper Navajo PA-31 Service Manual page 503

PIPER NAVAJO SERVICE MANUAL
ductor out of grommet and cable outlet plate.
4. Using a 3 inch long, 0.270 inch diameter drift, applied at outer surface
of plate, drive out tapered ferrule and remaining pieces of insulation and shield-
ing.
5. To determine what length the new lead assembly should be cut to, pro-
ceed as follows:
(a) Measure the length of the condemned lead assembly. Move coupling
nut back on lead assembly and measure from outer end of ferrule
at spark plug end. See Figure 8-20
231 A
231 B
Figure 8-21. Cutting Metallic Braid
From End of Lead
Figure 8-22. Unbraiding Metallic
Shielding
(b) To the length determined in step (a), add 1-3/4 inches.
NOTE
Spare part leads are supplied in various lengths. Use
a lead which is longer than,but nearest to, the desired
length.
6. Cut lead assembly to the length determined in step 5. Mark ferrule on
spark plug end of lead with a metal stamp, scribe or rubber stamp to correspond
with correct cylinder number.
7. Starting at spark plug location, thread new cable thru grommets and
clamps as necessary for correct routing of cut end of cable to magneto location.
8. Using electrician's
scissors,
carefully remove 1.250 inch of outerbraid
from end of lead.
Refer to Figure 8-21.
Reissued: 10/12/79
POWER PLANT
2J5