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Owner Service 21
MAN0764 (11/5/2008)
Seasonal Lubrication
In addition to the daily recommended lubrication, a
more extensive application is recommended season-
ally.
1. Fill CV double yokes with 20 pumps of grease with
the joints in a straight line.
2. Articulate CV body to maximum angle several
times to ensure full coverage of joints.
3. Place joints in the straight position and a add 10
additional pumps of grease to both joints.
4. Wipe telescoping drive clean of all old grease and
contaminants.
5. Add a thin layer of new grease over telescoping
drive.
BLADES
Before working underneath, read manual
instructions, securely block up, and check stabil-
ity. Secure blocking prevents equipment from
dropping due to hydraulic leak down, hydraulic
system failure, or mechanical component failure.
Blade Removal (Figure 6)
Figure 6. Blade Assembly
1. Disconnect driveline from tractor PTO.
2. Raise cutter and block securely (see Figure 5).
3. Align crossbar (8) with blade access hole in the
cutter frame. Remove cap screw (50), blade pin
lock clip (12), keyhole plate (11), and shims (9 &
10). Carefully drive blade pin (7) out of crossbar.
4. Rotate crossbar and repeat for opposite blade.
NOTICE
If blade pin (7) is seized in crossbar and extreme
force will be needed to remove it, support crossbar
from below to prevent gearbox damage.
Blade Installation (Figure 6)
Your dealer can supply genuine replacement
blades. Substitute blades may not meet original
equipment specifications and may be dangerous.
NOTICE
Crossbar rotation has clockwise rotation on left
gearbox and counterclockwise rotation on the right
gearbox when looking down on cutter. The center
gearbox has counterclockwise rotation on all mod-
els except BW1620XQREV, which has clockwise.
Be sure to install blade cutting edge to lead in the
correct rotation.
NOTE: Always replace or sharpen both blades at the
same time.
1. Inspect blade pin (7) for nicks or gouges, and if you
find any, replace the blade pin.
2. Insert blade pin through the blade. Blade should
swivel on blade pin; if it doesn’t, determine the
cause and correct.
3. Align crossbar (8) with blade access hole in cutter
frame. Apply a liberal coating of Never-Seez
®
or
equivalent to blade pin and crossbar hole. Make
sure blade offset is down away from cutter.
4. Insert blade pin (7) through blade. Push blade pin
through crossbar.
5. Install shims (9 & 10) over blade pin.
NOTE: Only use enough shims to allow keyhole
plate (11) to slide into blade pin groove.
6. Install blade clip (12) over keyhole plate and into
blade pin groove.
7. Secure into position with cap screw (50). Torque
cap screw to 85 lbs-ft.
8. Repeat steps for opposite side.
NOTE: Blade should be snug but should swivel on pin
without having to exert excessive force. Blade should
not move more than a 1/4 inch up or down at the tip.
Keep any spacers not used in the installation as
replacements or for future installation.
7. Blade pin
8. Crossbar assembly
9. Shim, 18 ga
10. Shim, 20 ga
11. Keyhole plate
12. Blade lock clip
50. 1/2 NC x 1-1/4 HHCS GR5
CAUTION