High Points On Regulator Performace And Checks; Generator Output Control And Relay Test Specifications - Piper PA-24 Comanche Service Manual

PIPER COMANCHE SERVICE MANUAL
9-40. High Points On Regulotor P.rforlft...ce A"d C!tecks.
1.
The voltaIe reculator unit limits the voltace of the cireuit, thus protttetinc the battery.
distributor points. Uabts, and other accessories from hiah volta...
2. The current rel\llator unit provides protection to the lenerator, preventinc it from ex·
ceed.inl its maximulll rated output.
3. Never let the current recutator above the IIlUilllUm specified output of the lenerator.
4.
~any
of the replators are desiped to be used with. positive ,rounded battery. While
others are desianed to
be
used with • ne,ative crounded battery only. Never attempt to use the
wronl polarity reculator on an Ipplic:atiOQ.
5. The majority of reportedreplator troubles art.e from dirty or oxidiatd contact points,
which cause a reduced lenerator output. Clean the eeetact points with a spoon or riffler file.
H•••r us••....". cloth or s."dpOpOf
to
clean ,oi"ts.
6. Always make sure that the nlbber casket is in place between the cover and bate before
replacina the cover. The gasket prevents entrance of moisbUe, dust and aU vapors which milht
damlile the reculator.
i.
The proper testinl equipment
in
the bands of a qualified mechanic is necessary to as·
sure proper and accurate relulltor settinls. Any attempt on the part of untrained personnel to
adjust retulators is apt to lead to serious dama.e to the electrical equipment and should therefore
be discoulllecL
8. After any generator or Naulator tests or adjustments. the pnenator must be polarized
as explained in paragraph 9-27 in order to avoid dama.. to the equipment.
9. It is EeCOlDmended that followinC replacement er repair of a Kenerater
~
regulator ltTu:;
be adjusted on a test bench as a matched unit.
9-41. G.nfrator Output Control A"d R.l.y T.st Speciflcotio"s. Delco-Remy test specifications
for 12 volt r_lulators installed as standard equipment on the PA·24·180 and PA·24·250 airerait
are as follows:
Recul.tor
1118704 1119224
Deleo-Remy, Ref. Service Bulletin 1R·116
1R·116A
Cutout Relay
Air Gap
•020 in. .020
in •
POlnt Openinl
.020 in.
.020 in•
ClosinC Voltaae
U.B· 13.5 11.8· 13.5
Voltage Regulator
Air Gap .075 in.
.075 in.
Voltale Setting
13.9· 14.7
6S F 14.7· 15.7
85 F 14.4 • 15.4
105 F 14.2· 15.0
Current Regulator
Air Gap .075 in.
.075 in.
Current Setting
33·3; amps 48·52 amps
EI..SCTRICAL SYSTEM
ISSUED: 8/18/72
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B6
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