Komatsu 830E-AC Shop Manual page 195

BATTERY SUPPLY SYSTEM
24VDC Battery Charging Alternator
Refer to Section D, Battery Charging Alternator in, for
service information regarding the battery charging
alternator.
Battery Box
Four type 8D batteries (3, Figure 2-1) for the 24VDC
engine cranking circuit are located in the battery box
in the center of the front platform. For access to the
batteries, open the hinged cover by turning the cover
latches (1) counterclockwise until released. Lifting
eyes are attached to each end of the battery box so
that the entire battery box assembly can be removed,
if necessary.
1. Battery Box Cover Latch
2. Auxiliary Battery Receptacles
3. Batteries
4. Battery Control Box
D02034
FIGURE 2-1. BATTERY BOX & BATTERY CONTROL BOX
5. Circuit Breaker (50 amp)
6. Engine Start Relay
7. Battery Disconnect Switch
(Cranking Motor)
24 VDC Electric Supply System
A 24VDC to 12VDC converter, located toward the
bottom of the inside left wall of the auxiliary control
cabinet, is used to convert the 24 volt battery system
voltage to 12 volts for various truck components.
When maintenance or repairs are performed, the
batteries can be quickly disconnected from the
cranking motor or control circuits by using disconnect
switches (7 & 8) located on battery control box (4).
An external battery charger may also be connected
to auxiliary battery receptacles (2) located on battery
control box (4).
8. Battery Disconnect Switch
(System)
9. Battery System Isolator Diode
D2-5