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Belt Maintenance
Check the condition and tension of the alternator belt after
the first day of operation and every 100 operating hours
thereafter.
Tensioning the Alternator Belt
Service Interval: After the first 8 hours—Check the
condition and tension of the alternator
belt.
Every 100 hours
1. Open the hood.
2. Check the tension of the alternator belt by pressing
it
(Figure
68) midway between the alternator and the
crankshaft pulleys with 10 kg (22 lb) of force.
Figure 68
1. Brace
2. Alternator belt
Note: The belt should deflect 11 mm (7/16 inch). If
the deflection is incorrect, proceed to step 3. If correct,
continue operation.
3. Loosen the bolt securing the brace to the engine
(Figure
68), the bolt securing the alternator to the brace
and the pivot bolt.
4. Insert a pry bar between the alternator and the engine
and pry out on the alternator.
5. When you achieve the proper tension, tighten the
alternator, brace, and pivot bolts to secure the
adjustment.
3. Pivot bolt
Hydraulic System
Maintenance
Changing the Hydraulic Fluid
Service Interval: Every 800 hours
Every 2 years—Drain and flush the hydraulic tank.
If the fluid becomes contaminated, contact your
Toro Distributor because the system must be flushed.
Contaminated fluid looks milky or black when compared to
clean oil.
1. Stop the engine and raise the hood.
2. Place a large drain pan under the fitting secured to the
bottom of the hydraulic-fluid reservoir
1. Hose
3. Disconnect the hose from the bottom of the fitting and
let the hydraulic fluid flow into the drain pan.
4. Install the hose when hydraulic fluid stops draining.
5. Fill the reservoir with approximately 56.7 L (15 US
gallons) of hydraulic fluid; refer to
Hydraulic-Fluid Level (page 27)
Important: Use only the hydraulic fluids
specified. Other fluids could cause system
damage.
6. Install the reservoir cap.
7. Start the engine and use all of the hydraulic controls to
distribute hydraulic fluid throughout the system. Also
check for leaks.
8. Stop the engine.
9. Check the level of the hydraulic fluid and add enough
to raise level to the Full mark on the dipstick.
Important: Do not overfill the reservoir.
46
(Figure
Figure 69
Checking the
69).
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