Piper Navajo PA-31 Service Manual page 501

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.
8-60. MAINTENANCE OF HARNESS.
30 A
a. To replace contact springs,
spring retainer assemblies
or insula-
ting sleeves, proceed as follows:
1. Using a Scintilla 11-7073
Needle or a mechanical pencil with the
lead retracted, hook the end of the con-
tact spring as shown in Figure 8-17.
2. Using the needle or pencil,
unscrew the spring.
3. Slide insulating sleeve and
spring retainer assembly off end of lead
assembly.
4. Replace defective component
and reassemble as follows:
(a) Fabricate a tool as shown
in Figure 8-18for instal- Figure 8-17. Removing Spring From
ling the insulating sleeves
Lead Assembly
over cable terminals.
(b) Push the tool thru insulating sleeve and spring retainerassemblyas
shown in Figure 8-19. Screw the cable terminal into the tool.
(c) Work insulating sleeve and spring retainer assembly into position
over the cable and unscrew the tool. Install contact spring on cable
terminal.
NOTE
It may be necessary to lubricate the cable and insula-
ting sleeve with a thin film of MC 200 (200,000 centi-
stokes) or commercial grade alcohol to facilitate as-
sembly.
b. To replace one of the lead assemblies proceed as follows:
1. Remove clamps and brackets from applicable lead assembly. Cut cable
Reissued: 10/12/79
POWER PLANT
PIPER NAVAJO SERVICE MANUAL
2J3