5-02
STARTING SYSTEM
5-02
TESTING
ROAD SERVICE
On road service calls or cases of a starter that
will not crank the engine or a starter that cranks
very slowly, a booster battery may be connected
to the 12-volt system. If the engine still will not turn
with the booster connected, refer to the following
tests:
TO JUMP START (NEGATIVE GROUNDED
BATTERY)
WARNING: BAlTERIES ARE HEAVY, WEIGH-
ING 30 LBS. OR MORE. LIFT THEM WITH
YOUR LEGS RATHER THAN YOUR BACK TO
PREVENT MUSCLE STRAINS, AND BE CARE-
FUL NOTTO DROP THEM (POSSIBLE BREAK-
AGE) NOR TO SPILL THE CONTENTS
(SULFURIC ACID).
CAUTION: 129volt starting motors can be
damaged beyond repair if connected to a 241
volt power supply (two 12-volt batteries in se-
ries, or a 240volt motor-generator set), even
when cranking loads are relatively light. Ex-
tensive starting motor damage is more likely if
the starter is connected to a 24-volt supply
while being subjected to prolonged heavy
cranking loads such as attempting to start an
engine in subzero temperatures.
CAUTION: To prevent damage to electrical or
lighting components during jump starting, the
following procedure must be followed:
1. Turn all lamps off before and during jump
starting.
2. Turn on heater blower motor to remove tran-
sient voltage.
3. Shield eyes. Use safety goggles or similar eye
protection. ’ -
4. Connect ends of one cable to positive ( + )
terminal of discharged battery and the other
end to the positive ( + ) terminal of the booster
battery.
5. Connect one end of the other cable to nega-
tive ( - ) terminal of “good” battery.
6. Connect other end of cable to engine bolthead
or similar good contact spot on the vehicle
being started (NOT to negative ( - ) terminal
of battery).
7. Make sure jumper cables are not in the way of
moving engine parts.
8. Start engine of vehicle with the booster bat-
tery and run at moderate speed.
9. Start engine of vehicle with discharged bat-
tery. Follow starting procedure described in
owner’s manual.
IO. To prevent damage to other electrical compo-
nents on vehicle being started, make certain
that engine is at idle speed before disconnect-
ing jumper cables.
11. Remove cable from engine block before dis-
connecting cable from battery positive termi-
nal. Lamps may now be turned on.
ON VEHICLE TESTING
IF STARTER CRANKS SLOWLY
1. BATTERY
- Use jumper cables per instruc-
tions. If this corrects problem, check condition
of battery, recharge or replace if necessary.
Clean battery posts, cable lugs and tighten.
MAKE CONNECTIONS IN NUMERICAL
ORDER (DISCONNECT IN REVERSE
ORDER 4, 3, 2, 1)
2. CABLES -
If the above does not correct the
SECOND JUMPER CABLE
problem, clean and tighten connections at
starter, relay and battery ground on engine.
Eyelet terminals should not be easily rotated
by hand. Also check for short to ground.
DISCHARGED
MAKE SURE VEHICLES
3. STARTER - If the above does not correct the
BATTERY
DO NOT TOUCH
problem, replace starter.
GASOLINE ENGINE
52571-l B
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