MacDon R80 Rotary Disc - Manual (Page 58)

MAINTENANCE/SERVICE
Form # 169089
56
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.