MacDon R85 Rotary Disc 13 Foot Pull-Type - Manual (Page 71)

MAINTENANCE AND SERVICING
Form 169454
69
Revision A
7.8.3.1 Disc Removal/Installation
CAUTION
Exercise caution when working around the
blades. Blades are sharp, and can cause
serious injury. Wear gloves when handling
blades.
a. Place a block of wood between two discs to
prevent disc rotation while loosening blade bolts.
b. Replacing a disc:
1. Remove four bolts (A) on disc cover (B), and
remove cover and disc (C).
2. Position new disc (C) on spindle ensuring it
is 90 degrees to the adjacent discs.
3. Install cover (B), and secure with four bolts
(A). Tighten bolts to 92 ft·lbf (125 N·m).
c. Replacing driven disc under deflector:
1. Remove four bolts (D).
2. Remove cover (E), deflector (F), and disc
(G).
3. Position new disc (G) on spindle, ensuring it
is 90 degrees to adjacent discs.
4. Position deflector (F) on spindle so that it
clears accelerators (H).
5. Install cover (E), and secure with four bolts
(D). Tighten bolts to 92 ft·lbf (125 N·m).
d. Replacing the driveline disc:
Refer to the Technical Service Manual.
WARNING
Ensure cutterbar is completely clear of
foreign objects. These objects can be
ejected with considerable force when the
machine is started, and may result in
serious injury or machine damage.
e. Close doors.
C
B
A
F
E
D
H
G