Rosco RB48 - Engine Coolant Temperature above Normal; Alternator Not Charging

ROSCO - A LeeBoy Company
Troubleshooting 5.6
RB48 BROOM
Problem
Cause
Solution
Radiator fins damaged or
obstructed with debris
Collapsed or restricted radiator hose
Loose fan drive belt
Cooling fan shroud damaged or
missing
Incorrect/malfunctioning radiator cap
Temperature gauge or sender
malfunctioning
Thermostat stuck in closed position
Dirt, scale or rust in the cooling
system
Loose wiring or faulty connection
Diode at alternator loose or faulty
Alternator belt loose or broken
Alternator malfunctioning
Faulty gauge or sender.
Alternator not charging
Faulty wiring
Inspect radiator fins, clean/repair or
replace
Inspect hoses, replace if
necessary
Check belt tension and tighten if
necessary
Inspect shroud, repair, replace or install
as needed
Check the radiator cap, replace if
necessary
Repair/Replace sender or gauge
Test thermostat, replace if necessary
Clean cooling system
Repair/Replace loose wiring or
connector.
Tighten connection or replace diode.
Adjust or replace belt.
Replace alternator
Replace gauge or sender
Repair wiring or replace alternator
Check/Replace wiring or connector
Engine Coolant Temperature
Above Normal
Alternator Not Charging
Instrument(s) Don't Work