169441 161 Revision D
Figure 4.80: Left Knife Drive
3. Loosen two nuts (A) on the knife drive belt idler bracket.
Figure 4.81: Left Knife Drive
4. Insert a long punch (or equivalent) into hole (B) in the idler
bracket, and pry downward until a force of 27 N (6 lbf)
deflects the timing belt 12 mm (1/2 in.) at mid-span.
5. Tighten the nuts on the knife drive belt idler bracket.
Figure 4.82: Left Belt Guide
6. Ensure clearance (A) between belt (B) and guide (C) is
0.5–1.5 mm (1/32–1/16 in.).
7. If necessary, loosen bolts (D) and adjust the guide, then
tighten the bolts.
8. Repeat this procedure for the opposite side of the header.
9. Close the endshield. For instructions, refer to 4.3.2 Closing
Hinged Endshields, page 117.
Removing Timed Knife Drive Belt – Left Side
DANGER
To prevent bodily injury or death from the unexpected start-up or fall of a raised machine, always stop the engine and
remove the key before leaving the operator’s seat, and always engage the safety props before going under the
machine for any reason.
MAINTENANCE AND SERVICING
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