Toro Reelmaster 3555, Руководство оператора, Страница: 57 / 76

Belt Maintenance
Servicing the Engine Belts
Service Interval: After the first 10 hours—Check the
condition and tension of all belts.
Every 100 hours—Check the condition and
tension of all belts.
Tensioning the Alternator/Fan Belt
1. Prepare the machine for maintenance; refer to
Preparing for Maintenance (page 41) .
2. Unlatch and open the hood.
3. Check the belt tension by pressing the belt
midway between the alternator and crankshaft
pulleys.
Note:
With 98 N (22 lb) of force, the belt should
deflect 11 mm (7/16 inch).
g008916
Figure 87
1. Alternator/fan belt
4. If the deflection is incorrect, complete the
following procedure to tension the belt:
A. Loosen the bolt securing the brace to the
engine and the bolt securing the alternator
to the brace.
B. Insert a pry bar between the alternator and
engine and pry the alternator outward.
C. When you achieve proper belt tension,
tighten the alternator and brace bolts to
secure the adjustment.
5. Close and latch the hood.
Replacing the Hydrostat Drive Belt
1. Insert a nut driver or small piece of tubing onto
the end of the belt tensioning spring.
WARNING
When you replace the hydrostat drive
belt, you must release the tension on
the spring, which is under a heavy
load. Releasing the tension on the
spring improperly may result in serious
personal injury.
Be careful when releasing the tension on
the spring.
2. Push down the end of the belt-tension spring
down and out of the notch in the tab of the pump
mount, and move the spring end forward (
Figure
88 ).
g350053
Figure 88
1. Pump mount tab 4. Drive belt
2. Belt-tension spring 5. Hydrostat pulley
3. Engine pulley
3. Replace the belt.
4. Push down the end of the belt-tension spring,
and inward, and align it into the notch in the
pump mount tab.
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