Caution, Danger – MacDon FD70 for Combine Operators User Manual

Page 113

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SECTION 9. OPERATION

Form 169006

111

Revision D

9.13 KNIFE HEAD SHIELD

The shield attaches to the endsheet, and reduces
the knife head opening to prevent cut crop from
accumulating in knife head cut-out creating
plugging.

It is recommended that the shield(s) be installed
when harvesting severely lodged crop or any crop
condition where plugging occurs at knife head
cut-out.

The shield(s) and mounting hardware are
available from your MacDon Dealer and are
installed as follows:

IMPORTANT

Shields should be removed when
cutting with cutterbar on ground in
muddy conditions. Mud may pack into
cavity behind shield, and cause wobble
box failures.

NOTE

Shields are slightly different depending
on header size. Ensure proper shield is
used. See Section 12.18 KNIFE HEAD
SHIELD.

a. Raise reel fully, lower header to ground, shut

down combine, and remove key.

CAUTION

Always engage reel props before working
under reel.

b. Engage reel arm locks.

DANGER

To avoid bodily injury or death from
unexpected start-up or fall of raised machine,
stop engine, remove key, and engage lift
cylinder stops before going under machine.

NOTE

The knife head shield is supplied in
flattened form, and can be bent to suit
installation on pointed or stub guard
cutterbars, and on double knife
headers.

CAUTION

Wear heavy gloves when working around or
handling sickles.

c. Locate knife head shield (A) against endsheet as

shown.

d. Orient the shield so that cutout matches profile of

knife head and/or hold-downs.

e. Bend shield along slit to conform to endsheet.

f.

Place shield on endsheet, align mounting holes,
and install two 3/8 in. x ½ Torx head bolts (B).

g. Snug up bolts just enough so that shield can be

adjusted as close as possible to knife head.

h. Manually rotate wobble box pulley to move knife

and check for areas of contact between the knife
head and shield.

i.

If required, adjust shield to avoid interference with
the knife.

j. Tighten

bolts.

B

A

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