LOFTNESS Timber Ax 63TA, Руководство пользователя, Страница: 32 / 62

26 Timber Ax
Maintenance
Knife Sharpening (Cont'd)
Check the cutting edge after sharpening with a square (1)
to insure a continued straight cutting surface.
Use a knife angle gauge (2) to check for the proper angle.
Correct Angle
No
Radius
Allowed
35°
Incorrect Angle
NOTE: Sharpen each knife equally to maintain rotor
balance. Always return knife to its original
location if it has been removed from the rotor for
sharpening.
NOTE: The knives have been heat treated to a
specific hardness. Care must be taken to avoid
overheating the leading edge of the knife while
sharpening. If the coloring in the knife changes
to either a blue or brown during the sharpening,
you have removed the temper and the knife will
not hold it’s cutting edge.
NOTE:
When re-sharpening using a hand grinder, avoid
overheating the knife by lightly grinding each
knife, moving across the entire row of knives
before returning to the first tooth to repeat the
procedure.
NOTE: When re-sharpening knife using machine shop
equipment, avoid overheating the knife by using
a flood coolant system.
Knife Support Replacement
To remove broken knife support grind off all welds.
Attach knife to knife support, aligning the back edge of
the replacement knife support with the adjacent knife
support.
Tack weld the center of the knife support to the knife bar.
Hold a straight edge across the back edge of the knives
to check that all knives are aligned.
Grind off
welds.
New knife
support
Adjacent knife
support
Tack weld
here.
Straight
edge
Knife Bar
1 2