5-5
CHECK FAN BELT
CHECK FAN BELT
5)
5)
An deflection method can be used to check belt
tension by applying 11 kgf (25 lbf) force between
the pulleys on V-belts. If the deflection is more
than one belt thickness per foot of pulley center
distance, the belt tension must be adjusted.
Inspect the fan belt for damage.
Transverse (across the belt) cracks are
acceptable.
Longitudinal (direction of belt ribs) cracks that
intersect with transverse cracks are not
acceptable.
Inspect the belt
- Embedded debris
- Uneven/excessive rib wear
- Exposed belt cords
- Glazing (high heat)
If any of the above conditions are present,
If any of the above conditions are present,
the belt is unacceptable for reuse and must
the belt is unacceptable for reuse and must
be replaced.
be replaced.
(1)
(2)
OK
NOT OK
120096MA42
120096MA43
2609A6MA47
①
②
③
※
NOT OK
INSPECTION OF COOLING FAN
INSPECTION OF COOLING FAN
Personal injury can result from a fan blade fail-
Personal injury can result from a fan blade fail-
ure. Never pull or pry on the fan. This can
ure. Never pull or pry on the fan. This can
damage the fan blade and cause fan failure.
damage the fan blade and cause fan failure.
Rotate the crankshaft by using the engine bar-
Rotate the crankshaft by using the engine bar-
ring gear.
ring gear.
A visual inspection of the cooling fan is
A visual inspection of the cooling fan is
required daily.
required daily.
Check for cracks, loose rivets, and bent or
Check for cracks, loose rivets, and bent or
loose blades.
loose blades.
Check the fan to make sure it is securely
Check the fan to make sure it is securely
mounted. Tighten the capscrews if necessary.
mounted. Tighten the capscrews if necessary.
Replace any fan that is damaged.
Replace any fan that is damaged.
50D96MA10B
6)
6)
※
※
