Case 580SR Service Manual page 832

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4
1.2
FAULT FINDING
PROBLEM
Electrical system is inoperative
Starter motor speed too low, the
engine cranks slowly
Starter motor inoperative
Charge indicator lamp stays on
with engine running
Batteries will not charge
Charge indicator flashing
indicating excessive charging
voltage
SECTION 55 - ELECTRICAL SYSTEM
CAUSE
Loose or corroded battery
connections
Clean and tighten connections
Sulphated batteries
Battery Isolator switch turned OFF
Main machine fuse link blown
Loose or corroded connections
Low battery output voltage
Incorrect viscosity of the engine oil
Transmission shift lever in gear
Loose or corroded connections
Dead batteries
Low engine idle speed
Loose belt
Malfunctioning battery
Malfunctioning alternator
Loose or corroded terminal
connections
Sulphated batteries
Loose or worn belt
Malfunctioning alternator
CORRECTION
Check that the battery voltage with
open circuit is at least 12.6 V.
Check the electrolyte level and
density.
Restore the battery isolator switch.
Find the reason of the failure and
replace the connection fuse.
Clean and tighten loose connections.
Check that the battery voltage with
open circuit is at least 12.6 V.
Check the electrolyte level and
density.
Use an oil with correct viscosity for
the temperature conditions.
Move gearshift lever to neutral.
Clean and tighten loose connections.
Charge or replace the batteries.
Increase idle speed.
Check belt tension.
Check that the battery voltage with
open circuit is at least 12.6 V.
Check the electrolyte level and
density.
Check alternator.
Clean and tighten the connections.
Check that the battery voltage with
open circuit is at least 12.6 V.
Check the electrolyte level and
density.
Check the automatic belt tensioner.
Replace belt if required.
Check alternator.
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