Piper Comanche PA-24 - 9-40. HIGH POINTS ON REGULATOR PERFORMANCE AND CHECKS (DELCO-REMY); 9-41. GENERATOR OUTPUT CONTROL AND RELAY TEST SPECIFICATIONS

PIPER COMANCHE SERVICE MANUAL
9-40. High Poi.t. O. R.gulato, Petfo,"' .... And Clleck •.
1. The voltap tellUlator unit limits the voltaae of the cireu.it, thul protectiD, the battery,
distributo, points, liahts, ... d othe, accnsories from hiah voltap.
2. The current relUlatof unit provides protection to the generator, preventina it from ex-
ceedinl its maximum rated output.
3. Never
set the current raplator above the lIIaximum specified output of the lenerator.
4. Many of the reauJltOrs Ole dniped to be used with a positive ,rounded battery ,·while
others ate desiped to be used with. Deaative 1P'00000ded battery only. Never attempt to use the
wrona polarity tellUlator on OIl application.
5.
The .. ajority of reported rellUlator troubles arise from dirty or oxidized contact pointS,
.. hlCh cause a reduced 18nlrator output. Clean the cOIltact pOints with a spoon or riffier file.
H ..... r ute • ...". cl.th 0' .an .... pet to cl .... points.
6. Always make sure that the rubber casket is in place between the cover and base befo~
replacing the cover. The gasket prevents entrance of moisture, dust and oil vapors \Vhich might
damale the regulator.
i. The h'lper testing equipment in the hands of a qualified mechanic is necessary to as·
sure proper and accurate regulator sattinp. Any attempt on the part of untrained personnel to
adjust regulators is apt to lead to serious damage to the electrical equipment and shouLd therefore
be discouraged.
8. After any generator or regulator teltl or adjustments, the pnerator must be polarized
as expLained in paragraph 9-rJ in order to avoid damap to the equipment.
9. It is recommended that folloW'inC replacement or repair of a lenerator .T reculata' tl'f..:~.
be adjusted on a rest bench u • matched unit.
9-41. Generator Output Control Anll R.lay Te.t Specifications. Delcc>Remy test spec:!icarions
for 12 volt regulators instaUed IS standard equipment on the PA-24-1S0 and PA-24·250 aircrait
are as follows:
Regulator
Delco-Remy, Ref. Service BuUetin
Cutout
Re lay
Air Gap
Point Opening
Closing Voltage
Voltage RellUlator
Air Gap
Voltage SettiDI
Current Reg\llator
Air
Gap
Current Setting
ELECTRICAL SYSTEM
ISSUED: 8/18172
111S704
1119224
1R-116
lR-116A
.020
in.
.020 "'.
.0201D. .020 in.
I1.S - 13.5 11.S - 13.5
.
075 in.
.075 in .
13.9 - 14.7
65 F 14.7· IS.;
S5 F 14.4 - 15.4
lOS F 14.2 - 15.0
.075 In. .075 in.
33·37 amps 4S-52 amps
3 86