Tiger KUBOTA M105S, Mounting And Operating Instructions

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Maintenance Section 4-19
MAINTENANCE
REPLACEMENT OF ROTARY DISK
Failure to follow the following warnings and instructions may result
in serious injury or damage to the equipment or property!
The bolts that attach the knife mounting disk to the spindle must be grade 8.
These 5/8 inch bolts are to be torqued to 204 dry or 184 oiled ft. lbs.
A thread locking agent may be applied to threads of all mounting bolts before they
are installed.
Disks must be inspected daily for hairline cracks between spindle
mounting bolts or around the knife mounting bolts. These cracks indicate
metal fatigue caused by severe abuse. If cracks are present, the disk must be
replaced.
Inspect the disk mounting bolts daily when checking tightness of blade mounting
bolts. If a disk mounting bolt is loose, it must be removed, threads cleaned, fresh
thread locking agent applied, and tightened to proper torque value.
If a knife mounting bolt is loose, the self locking nut must be replaced as a safety
precaution. Lubricate threads with anti-seize, grease or motor oil. Place bolts
through knife and disk from bottom side of disk. Install self locking nuts and torque
them to 800 ft. lbs.
1- WARNING : The disk alone weighs approximately 210 lbs. Be sure its weight
can be supported before attempting to replace. The use of a lift mechanism will
ease replacement.
2- Remove the six disk mounting bolts and the disk from the spindle.
3- Install new disk and align with mounting bolt holes.
4- Apply a thread locking agent to all of the mounting bolts and install the bolts
through the disk. If a bolt protector is being installed, hold the protector in place and
install the bolts through the bolt protector and disk.
NOTE : Disk bolts must be
Grade 8.
5- Tighten bolts down and torque to values noted.
6- See knife replacement instructions for replacing the knives onto the new disk.