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97
Revision A
IMPORTANT:
Right discs (A) and left discs (B) are timed and must be at a 90° angle from adjacent discs when reinstalled. Misaligned discs
could result in the following:
•
Disc blades of co-rotating discs hitting each other
•
Disc blades of diverging discs hitting adjacent discs
Check the clearance (timing) using disc timing tool (MD #307954) as shown in Figure
before tightening the
spindle to the cutterbar. The disc is correctly timed if the spindle hub is aligned with the disc timing tool as shown. Turn the
disc by hand to ensure the disc blades do
NOT
contact each other or adjacent discs. If contact occurs or the alignment is
incorrect, lift the spindle clear of the mounting bolts, rotate the spindle 180° (ensuring that the base does not turn), and
reinstall. Recheck the timing before bolting the hub down and tightening all of the nuts.
Figure 4.38: Checking Timing with Disc Timing Tool
–
View from Above
1028991
A
A
B
B
C
D
A - Disc Timing Tool (MD #307954)
B - Cutter Disc Cap
C - Right Disc, Correct Timing
D - Left Disc, Correct Timing
NOTE:
Spindles do
NOT
need to be bolted to the disc timing tool; visual confirmation of alignment will suffice. A disc timing tool
(MD #307954) is provided with the header and is located on the panel on the right side of the header. For storage location
of disc timing tool on header, refer to Figure
.
DANGER
To avoid bodily injury or death from unexpected start-up or fall of a raised machine, stop engine, remove key, and
engage windrower lift cylinder safety props before going under machine for any reason.
CAUTION
Disc blades have two sharp cutting edges that can cause serious injury. Exercise caution and wear gloves when working
with blades.