MacDon R80 Rotary Disc Pull-Type Windrower - Manual (Page 76)

MAINTENANCE/SERVICE
Form # 169053
74
Model Year - 2009
0.13 in.
(3 mm)
H/2
H
7.8.4.4 Cutter Blade Hardware
Check blade attachment hardware each time
blades are changed. Refer to previous section
for hardware replacement procedure.
a. Check bolts for wear or damage and replace bolt
if:
1. Bolt has been removed and installed five
times.
2. Head is worn flush with
bearing surface of blade.
3. Diameter of bolt neck
is worn out of
specification.
4. Bolt is cracked.
5. Bolt is visibly distorted.
6. Evidence
of
interference
with
adjacent
parts.
b. Check nuts for wear or damage and replace nut
if:
1. Worn height is less than
half total height.
2. Cracked.
3. Nut has been removed and installed five
times.