Run the engine, with no accessories on, until the engine is warmed
up.
Shut the engine off.
Read the drive belt tension
using the J 23600-B
placed
halfway between the generator and the fan pulley. Note the reading and remove
the J 23600-B
.
Start the engine with the accessories off, and allow the system
to stabilize for 15 seconds.
Turn the engine off.
Using a 3/8-inch
drive breaker bar, apply clockwise force to the drive belt tensioner pulley
arm. Release the force, and immediately take a drive belt tension reading
without disturbing drive belt tensioner position.
Using the same breaker
bar, apply a counterclockwise force to the drive belt tensioner pulley arm,
and raise the drive belt tensioner pulley to eliminate all tension.
Slowly lower the drive belt tensioner pulley to the drive belt, and
take a drive belt tension reading without disturbing the drive belt
tensioner position.
Average the three readings. If the average of the three readings
is not between 133-222 N (30-50 lb) and the drive
belt is not within the drive belt tensioner's operating range, replace the
drive belt tensioner. Refer to
Drive Belt Tensioner Replacement
.