Cessna SKYMASTER 336 1964 Service Manual page 224

SECTION 15
ELECTRICAL SYSTEMS
TABLE OF CONTENTS
Page
BATTERY POWER SYSTEM
Description ...........
Trouble Shooting .....
..
Battery and Battery Box .....
Cleaning ............
Adding Water to Battery .....
Testing Battery .........
Charging Battery ........
Battery Contactor ........
Master Switch ..........
Ground Service Receptacle ...
ALTERNATOR POWER SYSTEM
Description ....
Trouble Shooting
........
Alternator ..........
Auxiliary Alternator Field Circuit.
Paralleling Alternators .....
Testing and Repair of Alternators .
Regulator . ..........
Internal Adjustment of Regulator..
Ammeter .. . . ... ...
Voltmeter. ..........
15-1
15-1
15-2
15-2
15-2
15-2
15-3
15-3
15-3
15-3
15-3
15-3
15-5
15-5
15-5
15-6
15-6
15-6
15-7
15-7
SELENIUM TRANSIENT VOLTAGE SUPPRESSOR
Description ...............
15-7
15-1. BATTERY POWER SYSTEM.
15-2. The battery power system consists of a bat-
tery, battery contactor, master switch and external
ELECTRIC CLOCK
Description ...........
AIRCRAFT LIGHTING SYSTEM
Description ..........
Trouble Shooting .......
STALL WARNING SYSTEM
Description ..........
PITOT & STALL WARNING HEATERS
Description ...........
CIGAR LIGHTER CIRCUIT
Description ...........
.... 15-7
.... .15-7
....
.15-8
... .15-11
...
.15-11
... .15-11
AUXILIARY FUEL PUMP CIRCUIT ADJUSTMENT
Description
............... 15-11
LAMP REPLACEMENT CHART ....... 15-11
ELECTRICAL LOADING CHART . . . . . . .15-12
NOTE
Refer to Electronics Parts Catalog and Elec-
tronics Maintenance Manual for Electronic in-
stallation information not covered in this manual.
power receptacle.
The battery provides a reserve
power system for starting and operation of electrical
equipment when the aircraft engines are not operat-
ing.
15-3.
TROUBLE SHOOTING THE BATTERY SYSTEM.
PROBABLE CAUSE ISOLATION PROCEDURE REMEDY
BATTERY DOES NOT SUPPLY POWER TO BUS WHEN MASTER SWITCH IS ON.
Check specific gravity of battery.
Gravity reading should be at
least 1. 256 for 75% charge at
normal temperature.
Faulty battery cable.
Defective battery contactor,
master switch or wiring.
Inspect cables for good connec-
tion.
Activate the solenoid by short-
ing to ground the side of the con-
tactor coil that connects to the
master switch.
Charge or replace battery.
Check
charging rate of alternators.
Clean and reconnect. Replace
cable.
If contactor operates check
master switch and wiring.
If contactor does not operate
check jumper wire to coil.
Replace contactor.
Continued on next page.
15-1
Page
Dead Battery.