Piper Comanche PA-24 Service Manual page 681

PIPER COMANCHE SERVICE MANUAL
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FIGURE 9·13. CHECKING CURRENT
REGULATOR. LOAD METHOD
and note current setting.
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FIGURE 9·1 •• CHECKING CURRENT
LEAD METHOD. JUMPER LEAD METHOD
e. Adjust in .ame manner IS described for the yoltap "'SUlator (FiIU", 9-6).
9-36. R.""ir S.e'ion.
9-37. R.,ulator S,..in9 Replacement.
a. If
it
be1=omes necessary to replace the spiral sptiJ1l on either the
curr~t
or voltage regu-
lator unlt. the new .prinl should first
be
hooked
on
the lower .prinl .upport and then .tretched
up unul
it
can be hooked at the upper MId.. Stretch the Spri.al only by meaas of a screwdriver
blade inserted between the twns (or
Ul
a simil. manner) _ do noc: pry the spring into place. as
this is likely to bend the .prinl .uppon. After installina a
new
Sprinl. readjust the unit .etting
as
already
described. .
9-38. Ro~io By.Po .. C ...
d.n .....
a. The installation of radio by-pass condensers on the field terminal of the regulator or gen-
erator will cause the rel'llator
corlt8Ct
points to bu.rn and ,.idize
10
that generator output will be
reduced and a run down battery will result. U
8
condenser is found. ca1neC'ted to either of these
tertD.lllals, discoMKt the condenser and
CleM
the f'egulatCl' carltilct points as previous Iy exp181lled.
9-39. R.,ulator Annotur. R.plac.",.nt.
a. The arm_twe may
be
replaced by drilling our: the two river:s attaching the annature
to
the
regulator frame. Support the frame to avoid bending. center-punch the river: heads. and drill out
with a 3:'32 Ulcb. dnll. Attach the new armature with screws. lockwashers, and nuts supplied with
the service armature. Assemble screws down so that they
WIll
not Cround against cover.
3 85
ELECTRICAL SYSTEM
ISSUED:
8/18172