Ignition System - Onan MJA Series Service Manual

50
IGNITION SYSTEM
B. Removal and Disassembly
1.
Remove the distributor cap by removing the 3 mounting screws.
2. .Remove the two primary leads from the distributor terminals.
3. Remove the two coil leads from the breaker point cover adapter.
4. Record the position of the distributor body for easier assembly.
5. Remove the distril;mtor hold down capscrew and pull the distributor
out of the crankcase.
6. Remove the 3 screws holding the breaker plate to the distributor
housing and loosen the primary lead mounting terminals.
'7. Lift the breaker arms off their hinges.
8. Rotate the breaker plate counterclockwise about 45
0
and pun it out
of the distributor body.
9. Remove the 2 centrifugal advance springs.
10. Remove the spring clip (cam retaining spring) holding the cam to
the drive shaft and lift out the cam. The weights are now free and
can be lifted out.
11. If necessary, press the 2 bronze bearings out of the distributor body.
To check for bearing wear, see Repair, next sub-section.
PRIMARY
TERMINAL\
OISTRIBUTO~
\
BODY~
CENTRIFUGAL
FIG 3.3.K - DISTRIBUTOR CENTRIFUGAL ADVANCE MECHANISM