MacDon D65 SP DHOM - Manual (Page 165)

MAINTENANCE AND SERVICING
6.6 Knife Drive
6.6.1 Knife Drive Box
The knife drive box converts rotational motion into reciprocating motion to the knife. It is belt driven from a hydraulic
motor that is powered by the adapter hydraulic pump.
CAUTION
To avoid personal injury, before servicing machine or opening drive covers, refer to 6.1 Preparation for
Servicing, page 113 .
Mounting Bolts
Check the torque on the four knife drive box mounting bolts (A) and (B) after the first 10 hours operation and
every 100 hours thereafter.
1. Torque side bolts (A) first, then the bottom bolts (B).
Torque to 200 ft·lbf (271 N m).
Figure 6.49: Knife Drive Box
Removing Knife Drive Box
Single and Untimed Double Knife
This procedure applies to single and untimed double knife drive box.
1. Open endshield. Refer to Opening Endshields, page
37 .
2. Loosen the two bolts (A) that secure the motor
assembly to header endsheet.
3. Loosen the tension on the belt by turning the tensioning
bolt (B) counterclockwise.
Figure 6.50: Knife Drive
169899 153 Revision A