BUCKET LINKAGE SHEARS
Maintenance
Section 5
Page 3
40-HOUR SERVICE REQUIRED
Guide Blade:
Rotate or replace the guide blade if
necessary. Shim the guide blade if the guide blade
gap exceeds 0.030" (0.75 mm).
Cutting Blades:
Rotate the cutting blades or
replace if necessary. After blade rotation, shim
the lower blades to achieve the desired blade gap
between 0.010 and 0.020" (0.50 and 0.75 mm).
Upper Shear:
Inspect the wear areas to determine
if build-up and hardsurfacing is needed. Pay special
attention to the surface adjacent to the cutting
blades where the upper shear stops on the lower
shear. Repair or replace the piercing tip and front
wear plate if necessary.
Lower Shear:
Inspect the wear areas to determine
if build-up and hardsurfacing is needed.
PERIODIC SERVICE
SCHEDULE
SERVICE THE SHEAR AT SPECIFIED
INTERVALS
Inspect, lubricate, make service checks and
adjustments according to the 8-hour and 40-hour
Inspection Checklists reproduced from this manual.
A program of regular service should be established,
using the machine hour meter to determine when
the shear should be serviced. Use the intervals on
the Service Schedule when operating in normal
conditions. Service the shear at shorter intervals
when operating in extreme environmental or
abrasive conditions. Use Correct Lubricants and
Bolt Torques—refer to the Lubrication and Bolt
Torque instructions in this manual when performing
maintenance on the shear.
8-HOUR SERVICE REQUIRED
Inspect Safety Devices:
Make sure all decals are
installed and legible. Inspect the condition of the
cab protection and make sure visual and audible
warning devices are working properly. Make all
repairs before using the equipment.
Grease Fittings:
Lubricate according to the
Lubrication section (page 5-7). Replace broken
fi ttings.
Connecting Pins and Pin Retainers:
Inspect the
mounting bracket pins and shear cylinder pins for
looseness or damage. Check pinheads and pin
keepers.
Bolts:
Check for looseness or damage. Refer to the
Dry Bolt Torque chart in this section if torquing is
necessary. Bolts may be retorqued only once and
then must be replaced.
Guide Blade Gap:
Shim the guide blade if the gap
exceeds 0.030" (0.75 mm).
Cutting Blade Gap:
For most applications, this gap
should be maintained between 0.010 and 0.020"
(0.25 and 0.50 mm). Shim the blades if the gap is
greater than 0.020” (0.50 mm).
Piercing Tip:
Inspect for damage and check for a
square fi t in the lower jaw. Maintain if necessary.
Lower Piercing Area:
Inspect for damage and
check for a square fi t with the piercing tip. Maintain
if necessary.
