MSD 7R SHEARS
Maintenance Section 5 Page 7
GENERAL TROUBLESHOOTING CHECKLIST
The General Trouble Shooting Check List is provided as a guide in checking the general condition of the attach-
ment. This checklist should be incorporated in a periodical preventive maintenance program as part of the
80-hour inspection.
UPPER SHEAR
a. Throat Area Inspect for cracks.
b. Apex Inspect for cracks.
c. Torque Tube Inspect for cracks on the parent material and in the weld.
d. Spherical Bearing Inspect for proper alignment, greasing and bearing operation.
e. Bolt Holes Inspect for cracks.
f. Blade Seats Inspect for material cracks, weld cracks and excessive wear.
LOWER SHEAR
a. Nose Plate Inspect for weld failure and excessive wear.
b. Blade Seats Inspect for material cracks, weld failure and excessive wear.
c. Guide Blade Seat Inspect for material cracks, weld failure, excessive wear, broken structure.
d. Front Build-up Area Inspect for cracks and excessive wear.
e. Bolt Holes Inspect for cracks.
GENERAL WEAR AND MAINTENANCE ITEMS
a. Blades Inspect for excessive wear, broken pieces, cracks.
b. Blade Gap Inspect the blade gap; should be 0.005 to 0.010” (0.13 to 0.25 mm).
c. Guide Blade Inspect for excessive wear and cracks.
d. Guide Blade Gap Inspect to make sure the gap is within 0.030” (76 mm).
e. Piercing Tip Inspect for weld failure, excessive wear and damaged or missing component.
f. Front Wear Surface Inspect for excessive or uneven wear and damage.
