214323 378 Revision B
Figure 6.53: Chain Tensioner
1. Lower the header.
2. Stop the engine, and remove the key from the ignition.
3. Remove two bolts and chain adjusting cover (A). Ensure
there is no damage to gasket (B).
4. Remove retainer plate (C).
5. Tighten bolt (D) to 6.8 Nm (60 lbf∙in).
• For CNH / John Deere gearbox (MD #187475): back off
bolt (D) 1 2/3 turns after tensioning.
• For CLAAS/AGCO gearbox (MD #187502): back off
bolt (D) 1/2 turn after tensioning.
6. Reinstall retainer plate (C).
7. Reinstall chain adjusting cover (A) and gasket (B). Torque
hardware to 9.5 Nm (84 lbf∙in).
MAINTENANCE AND SERVICING
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