Belt Maintenance
Servicing the Alternator Belt
Service Interval:
After the first 10 hours
Every 100 hours
Check the condition and tension of the belts (Figure 64)
after every 100 operating hours.
1. Proper tension will allow 3/8 inch (10 mm)
deflection when a force of 10 lb is applied on the
belt midway between the pulleys.
2. If the deflection is not 3/8 inch (10 mm), loosen
the alternator mounting bolts (Figure 64). Increase
or decrease the alternator belt tension and tighten
the bolts. Check the deflection of the belt again to
ensure that the tension is correct.
Figure 64
1.
Alternator
2.
Mounting bolt
Re-tensioning the Blade Drive
Belts
Service Interval:
After the first 10 hours
Every 50 hours
Check the condition and tension of the cutting unit drive
belts initially after 8 hours of operation and every 50
operating hours thereafter.
When properly tensioned, the extension spring (hook
to hook) measurement should be approximately 3.50
±.25 inch (inside). Once the correct spring tension is
attained, adjust the stop bolt (carriage bolt) until there is
approximately .125 +.060/-.000 inch clearance between
the head of the bolt and the idler arm (Figure 65).
Note:
Make sure the belt is positioned on the spring
side of the belt guide (Figure 65).
Figure 65
1.
Belt
4.
Belt guide
2.
Eye bolt
5.
Flange nut
3.
Extension spring
6.
Stop bolt
Replacing the Blade Drive Belt
Service Interval:
Every 800 hours
The blade drive belt, tensioned by the spring loaded
idler pulley, is very durable. However, after many hours
of use, the belt will show signs of wear. Signs of a worn
belt are: squealing when belt is rotating, blades slipping
when cutting grass, frayed edges, burn marks and cracks.
Replace the belt if any of these conditions are evident.
1. Lower the cutting unit to the shop floor. Remove
the belt covers from the top of the cutting unit and
set the covers aside.
2. Loosen the eye bolt allowing the removal of the
extension spring (Figure 65).
3. Loosen the flange nut securing the stop bolt to the
mounting tab. Back off the nut enough to allow the
idler arm to pass by the stop bolt (Figure 65). Move
the idler pulley away from the belt to release belt
tension.
Note:
If the stop bolt is ever removed from the
mounting tab, make sure it is reinstalled in the hole
that aligns the stop bolt head with the idler arm.
4. Remove the bolts securing the hydraulic motor to
the cutting unit (Figure 66). Lift the motor off of the
cutting unit and lay it on top of the cutting unit.
46
Summary of Contents for 30413
Page 13: ...115 8455 1 Read the Operator s Manual 13...
Page 58: ...Schematics Electrical Schematic sheet 1 Rev B 58...
Page 59: ...Electrical Schematic sheet 2 Rev A 59...
Page 60: ...Hydraulic Schematic Rev A 60...
Page 61: ...Notes 61...
Page 62: ...Notes 62...
Page 63: ...Notes 63...
