Replacing Alternator Belt - Komatsu ecot3 PC300LC-8 Shop Manual

SEN02625-06

Replacing alternator belt

a The auto-tensioner is provided for the alternator
belt. Thus, testing and adjustment of the belt is
usually no necessary.
a Disconnect air conditioner compressor belt be-
fore replacing the fan belt.
k
Stop the machine on a level ground and low-
er the work equipment to the ground.
1. Open engine hood and remove fan belt cover (1)
and fan guard (2).
2. Insert wrench (a) to the portion (B) (width across
flats T 12.7 mm) of the tensioner assembly (5),
and rotate it to the direction of the arrow to
decrease the alternator belt (6) tension.
k
Make sure that the wrench is secured at
the portion (B) before rotating it. (The
spring of the tensioner assembly (5) is
strong. If the wrench is loosely inserted,
the wrench may accidentally come off
while being rotated and it is extremely
dangerous.)
k
After removing the alternator belt (1), re-
turn the tensioner assembly (5) slowly
with care.
k
Be careful not to get your fingers caught
between the pulley and alternator belt (6)
during work.
32
3. Replace the alternator belt (6).
q Check each pulley for breakage and crack.
30 Testing and adjusting
PC300, 350-8