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KNIFE REPLACEMENT
NOTICE: Inspect the cutter bar for leaks or other
needed repairs whenever performing service work
on the bar. If a leak is found repair it immediately to
prevent possible future failures.
NOTICE: Always replace both knives on a disc to
maintain balance. Do not intermix old and new knives
on a disc.
1. Remove the dirt around the knife bolt, 1, and bolt
protector, 2.
2. Block the discs in place with a hardwood block, 1,
or install a bar through the right hand tower.
3. Remove the bolt with a socket as shown. If
necessary hold the nut in place from the bottom
with your hand. This will keep the nut from turning.
NOTICE: If you are using an impact wrench use a bar
to hold the nut in place, not your hand.
4. The knife and the nut can be removed from under
the disc after the bolt is removed.
5. Knives can be turned over to use the opposite
cutting edge after they become dull or nicked. All
knives are angled. Knives are referred to as
clockwise or counter-clockwise depending on
which disc they are attached to.
6. The leading edge of the knives must be lower than
the trailing edge. Refer to the accompanying
drawing as to which way the discs turn.
1.
MD72
2.
MD82
3.
MD92
SECTION 58 - DRIVELINES - CHAPTER 3
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