MacDon R85 Rotary Disc 13 Foot - Manual (Page 89)

MAINTENANCE AND SERVICING
169454
87
Revision C
H/2
H
0.13 in
(3 mm)
7.5.4.3 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 any of the following conditions occur:
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:
 Worn height is less than half total height.
 Cracked.
 Nut has been removed and installed five
times.