Forming Leads In Breaker Compartment - Piper Navajo PA-31 Service Manual

2.
With distributor gear assembled to block, turn gear until raised rib on
block lines up between the L and LB marks.
Assemble
block and gear into hous-
ing, meshing the distributor
gears together. For the dual contact assembly
mag-
neto, distributor block rib must align between painted marks.
However, the rib
should favor
the LB mark, if possible.
(Refer to Figure 8-13.)
On the single
contact magneto the rib should favor the L mark.
3. Secure
distributor block to housing with studs and washers.
Tighten
studs finger tight.
Loosen the 11-8465 Rotor Holding Tool and turn rotating mag-
net in reverse direction of rotation until timing light indicates
main contact as-
sembly has just opened and check to make certain
timing marks align within tol -
erance indicated above.
Tighten block securing studs, first to 4-8 inch pounds
torque and then final torque to 20 inch pounds.
4. Insert
the tip of your small finger through timing hole in housing and
against large distributor
gear teeth. Rock distributorgearback
and forth slight-
ly. There must be perceptible
backlash between teeth of large and small gears.
This check should be made at three different
points, 120
°
apart on gear. If back-
lash is not evident, replace large distributor
gear.
5. Install the breaker cover and complete reassembly
of the magneto. Refer
to the manufacturer's
publications for complete disassemblyand
reassembly pro-
cedures.
f. Install and time magneto,
removed from engine, in accordance
with para-
graph 8-56.
g. Secure external switch and retard
leads to the breaker
cover terminals.
Connect harness assembly to the magneto.
8-56. INSTALLATION
AND TIMING
227
PROCEDURE. (Timing Magneto to En-
gine.)
RETARD TERMINAL
a.
Remove a spark plug from No. 1
cylinder and turn crankshaft in direction
of normal rotation until the compression
stroke is reached.
NOTE
The advance timing mark
on the top face of the starter
ring gear is marked at both
20
°
and 25
°
BTC.
Use only
CAPACITOR
the 20
°
BTC mark whentim-
ing the magnetos to the en-
gine.
Figure 8-14.
Forming Leads in
Breaker Compartment
Reissued: 10/12/79
POWER PLANT
PIPER NAVAJO SERVICE MANUAL
2124