Tiger JD 62-6420 manual Inspection Of Rotary Knife, Rotary Knife Replacement, Maintenance

MAINTENANCE

INSPECTION OF ROTARY KNIFE

Failure to follow the following warnings and instructions may result in serious injury or damage to the equipment or property!

1 – DO NOT weld on the knives or bolts. Damaged or worn knives must be replaced.

2 – Knives must be replaced in sets. Knives with unequal wear may cause serious vibration and resulting structural damage to the mower.

3 – The self-locking nuts for the knife mounting bolts must NOT be reused. If the self-locking nut is removed from the knife mounting bolt, the nut must be replaced with a new self-locking nut.

4 – Inspect the condition and tightness of the knife mounting bolts and disk mounting bolts daily.

ROTARY KNIFE REPLACEMENT

1 – Be sure you have a complete matching set of new knives for replacement.

2 – Remove knives and inspect holes for damage. Also watch for cracks in the disk around the holes.

3 – Install bolt through knife and disk from bottom side of disk. Install new self-locking nuts and torque them to 1070 dry or 800 oiled ft. lbs. It is recommended that they are oiled.

4 – The knives should swing freely to absorb shocks from impact when striking objects.

WHEN CUTTING HEAVY BRUSH, KNIFE BOLTS SHOULD BE INSPECTED HOURLY AND RETORQUED TO 1070 DRY OR 800 OILED FT. LBS.

Maintenance Section 4-19