7-26
INSPECTION OF COOLING FAN
INSPECTION OF COOLING FAN
Personal injury can result from a fan blade
Personal injury can result from a fan blade
failure. Never pull or pry on the fan. This can
failure. 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
Rotate the crankshaft by using the engine
bearing gear.
bearing 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.
※
※
※
8)
8)
FAN BELT
FAN BELT
7)
7)
An deflection method can be used to check belt
tension by applying 11.3 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 drive belt for damage.
Transverse (across the belt) cracks are
acceptable.
Longitudinal (direction of belt rids) 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 pressnt,
If any of the above conditions are pressnt,
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
21076MA10B