GMC 1976 ZEO 6083 Maintenance Manual page 396

6Y- 1 6
ENGINE ELECTRICAL
shrinks while the need for engine cranking power
increases with falling temperatures . Sub zero temper-
atures reduce capacity of a fully charged battery to
45% of its normal power and at the same time in-
crease cranking load to 3-1/2 times the normal warm
weather load .
Hot weather can also place excessive electrical
loads on the battery. Difficulty in starting may occur
when cranking is attempted shortly after a hot engine
has been turned off or stalls . In fact, modern high
compression engines can be as difficult to start under
such conditions as on the coldest winter day. Conse-
quently, good performance can be obtained only if
BATTERIES - FLAME ARRESTOR TYPE
FILLERNENT CAP
Type
MotorHome
Main (Automotive) Battery... . ... . . ... . . .... .... . ... . ... . .... . ... . . ... . . .... . ... . . . ... E5000 Catalog No . R91
Auxiliary (Living Area) Battery . . ... . .... . . .. . ... . .... . ... . . ... . . ... . .... . . . .Extra Duty Catalog No . 758
TransMode
@ 25 Amps
Amps for Load Test
BATTERIES-MAINTENANCE-FREE
BATTERY SPECIFICATIONS
the battery has ample capacity to cope with these
conditions .
A battery of greater capacity should be consid-
ered if the electrical load has been increased through
the addition of accessories or if driving conditions
are such that the generator cannot keep the battery
in a charged condition.
On applications where heavy electrical loads are
encountered, a higher output generator that will sup-
ply a charge during low speed operation may be
required to increase battery life and improve battery
performance.
140 285
220 450
Type
MotorHome
Main (Automotive) Battery. . . .... . ... . . ... . . ... . ... . . .. . . ... . . ... . .... . ... . . . ... Freedom Catalog No . R89-5
TransMode
Main Battery . . .. . . .... .... . . .. . . . ... . .... . ... . . ... . . ... . . .. . . .. . . ... . . ... . .... . . ... . . ... Freedom Catalog No . R89-5
Auxiliary Battery .... . . .. . . . ... . .... . . .. . . . ... . .... .... . ... . .... .... . ... . . . .. . . .... . . .. Freedom Catalog No . R89-5
M.G . Cranking Battery (Optional) . . ... . .... . ... . .... .... . ... . . . .. . . .... . . .. Freedom Catalog No . R85-5
Main Battery
Auxiliary Battery
. . ... . .... . . .. . . . ... . .... . . . . . . . ... . .... . ... . ... . ... . . ... . . . . . . . .. . . .... . . . . . . . ...
.... . . .. . . . ... . . ... . . ... . . ... . .... . ... . ... . .... . ... . . .. . . . .. . . .... . . .. . . . ...
E5000 Catalog No . R91
E5000 Catalog No . R91
Part No .
1980224 1980231
Make Delco-Remy Delco-Remy
Model No . E5000 Extra Duty
Catalog R91 758
Volts 12 12
Watt Rating @0°F .(-17 .8°C .)
3350 Watts 4500 Watts
Cold Cranking Rating @0°F.
(-17 .8°C .) 430 Amps 640 Amps
Cold Cranking Raging @-20°F.
(-29°C .) 330 Amps
450 Amps
Minutes Reserve Capacity