Mercury 6.2 TowSport MPI, Руководство по эксплуатации и обслуживанию

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Section 4 - Maintenance
Page 44 90-8M0128975
eng
JUNE 2017
Appearance Description Cause Solution
40799
Uneven rib wear
Belt shows damage to the side
with the possibility of breaks in
the tensile cord or jagged edged
ribs.
A foreign object in the pulley can
cause uneven wear and cut into the
belt.
Replace the belt and
inspect all pulleys for
foreign objects or damage.
40800
Cracking
Small visible cracks along the
length of a rib or ribs.
Continuous exposure to high
temperatures, the stress of bending
around the pulley leads to cracking.
Cracks begin on the ribs and grow
into the cord line. If three or more
cracks appear in a three‑inch
section of a belt, eighty percent of
the life is gone.
Replace the belt
immediately.
NOTE: Minor, transverse cracks (across the belt width) may be acceptable. Longitudinal cracks (in the direction of belt length)
that join transverse cracks are NOT acceptable.
Checking
Inspect the drive belt for:
•
Proper belt tension deflection
• Excessive wear
• Cracks
• Fraying
• Glazed surfaces
• Proper tension
Use moderate thumb pressure on the belt at the location with the longest distance between two pulleys.
Description
Deflection
13 mm (1/2 in.)
NOTE: Minor, transverse cracks (across the belt width) may be acceptable. Longitudinal cracks (in the direction of belt length)
that join transverse cracks are not acceptable.
21062
Replacing
IMPORTANT: If the belt is removed and is found to be in acceptable condition to use, you must install it in the same direction of
rotation as before.
NOTE: All power packages have a decal on the front of the engine. The decal shows the serpentine belt routing. Refer to the
decal when installing the serpentine belt.
The belt tensioner operates within the limits of movement provided by the cast stops when the belt length and geometry are
correct. If the tensioner contacts either of the cast stops during operation, check the mounting brackets and the belt length.
Loose brackets, bracket failure, accessory drive component movement, incorrect belt length, or belt failure can cause the
tensioner to contact the cast stops. See your authorized MerCruiser dealer for service if these conditions exist.