5-20
MAINTENANCE
SY60C Excavator OMM
Check and Adjust the Fan Belt Tension
NOTICE!
• A loose fan belt may cause improper battery
charging, engine overheating, or accelerated fan
belt wear.
• An overtightened fan belt may cause damage to
the belt, the bearings in the alternator, and the
engine coolant pump.
1.
Prepare the machine for service. See “Maintenance
Safety” on page 2-5.
0002398
Figure 5-19
2.
Check the fan belt tension by pressing down on the
fan belt between the fan pulley (1) and the alternator
pulley (2). The fan belt must deflect (3)
0.35 in.–0.47 in. (9 mm–12 mm).
0002894
Figure 5-20
3.
Adjust the belt if it is outside of specification. Loosen
the adjusting plate fastener (5), alternator bracket
fastener (6), and tension adjuster locknut (7).
4.
Turn the tension adjuster (4) to achieve the specified
belt tension.
5.
Tighten the adjusting plate fastener, alternator
bracket fastener, and tension adjuster locknut.
6.
Check the fan belt tension to confirm adjustment.
Replace the Fan Belt
Visually inspect the condition of the fan belt. Belts that
have been exposed to oil or engine coolant, or show
signs of damage or wear, must be replaced.
Contact a SANY dealer for replacing a fan belt.
Check and Replace the Air Filters
NOTICE!
Shut off the engine to prevent dirt from entering
the engine and causing damage when checking or
replacing the air filters.
Check the Dust Valve
0002895
Figure 5-21
The dust valve (3) is at the bottom of the end cover (1).
1.
When the engine is off, the dust valve should be
closed; if not, replace the dust valve.
2.
Squeeze the dust valve to release any dust or debris.
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