They appear more angular and have definite flat sec-
tions on the sides of the cutters.
Chisel cutters are ground with a slight hook such as
shown in Illustration 2.
CHAIN PARTS
It will help you to follow the instructions if you learn the names of the chain parts
and their proper sequence as shown here.
Illustration No. 2
TO FIND CHAIN PITCH
As shown above — measure the distance between any
three rivets next to each other and divide by two.
GRINDING SUGGESTIONS
Stop Finger should be set behind the chain tooth being
ground.
1. Keep new factory-sharpened chains on hand to
check side plate angles when sharpening chains.
2. A common error is to grind too deep. See Illustration
No. 6 and notice that the cutters are
not
ground to
the bottom of the gullets. Do not grind into tie
straps or drive links.
3. Before grinding the chain:
a. Remove oil and pitch from the chain to prevent
grinding wheel glazing and gumming.
b. Examine the chain for bent or cracked links.
c. Check for worn or broken drive links.
d. Check for tight pin joints.
Page 3
CORRECTLY GROUND CHISEL CUTTER
SEE STANDARD CHAIN CHART
FOR HEIGHT OF DEPTH GAUGE
30°
SIDE
END
85° SIDE PLATE ANGLE
TOP
80° - SIDE PLATE ANGLE ON OREGON
SUPER CHISEL
RIVET
HUB
FLANGE
PRESET
TIE STRAP
PRESET
LEFT HAND
CUTTER
TIE STRAP
RIGHT HAND
CUTTER
DRIVE LINK
GUARD LINK REPLACES DRIVE
LINK ON ALL GUARD LINK
CHAINS
PITCH:
THIS DISTANCE
DIVIDED BY TWO
GAUGE:
DRIVE LINK
THICKNESS
CUTTER
PART
NAMES
HEEL
TOE
RIVET
HOLE
DEPTH
GAUGE
GULLET
TOP
PLATE
SIDE
PLATE
Содержание 308
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