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4.
Check the bearings, spacer, and inside of the
wheel hub for wear and replace any damaged
parts.
5.
To assemble the caster wheel, push the bearing
into the wheel hub.
Note:
When installing the bearings, press on
the outer face of the bearing.
6.
Slide the bearing spacer into the wheel hub and
push the other bearing into the open end of the
wheel hub to captivate the bearing spacer inside
the wheel hub.
7.
Install the caster-wheel assembly between the
caster fork and secure it in place with the bolt
and locknut.
Replacing the Cutting Unit
Hinge Covers
The hinge cover prevents debris from escaping at
hinge points between cutting units. If the cover(s)
become damaged or worn, replace them.
Figure 128
1. Hinge point
Blade Maintenance
Blade Safety
•
Inspect the blade periodically for wear or damage.
•
Use care when checking the blades. Wrap the
blades or wear gloves, and use caution when
servicing the blades. Only replace or sharpen the
blades; never straighten or weld them.
•
On multi-bladed machines, take care as rotating
one blade can cause other blades to rotate.
Checking for a Bent Blade
After striking a foreign object, inspect the machine
for damage and make repairs before starting
and operating the equipment. Torque all of the
spindle-pulley nuts to 176 to 203 N∙m (130 to 150
ft-lb).
1.
Position the machine on a level surface, raise
the cutting unit, engage the parking brake, put
the traction pedal in
in the O
FF
remove the ignition key.
Note:
Block the cutting unit to prevent it from
accidentally falling.
2.
Rotate the blade until the ends face forward and
backward and measure from the inside of the
cutting unit to the cutting edge at the front of the
blade
(Figure
Note:
Remember this dimension.
g011516
3.
Rotate the opposite end of the blade forward
and measure between the cutting unit and
cutting edge of the blade at the same position
as in step 2.
Note:
The difference between the dimensions
obtained in steps
(1/8 inch). If the dimension exceeds 3 mm (1/8
inch), the blade is bent and must be replaced;
refer to
Removing and Installing the Cutting-Unit
Blade(s) (page
86
, put the PTO lever
NEUTRAL
position, shut off the engine, and
129).
Figure 129
2
and
3
must not exceed 3 mm
87).
g004740
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