New Holland 499 Operator's Manual page 87

Stub guard alignment
The stub guards, 1, should be aligned the same as
the standard guards. The knife section should lay flat
on the ledger surface.
The bottom of Figure 37 shows the guard and knife
properly adjusted.
The tip of the knife section contacts the front of
•
the ledger surface at 2.
The back rib, 3, on the guard holds the knife back
•
level.
The hold down, 4, is close to the knife section, but
•
does not cause it to bind.
The top of Figure 37 shows the guard and knife
improperly adjusted.
The knife section contacts the rear of the ledger
•
surface at 5.
The back rib, 6, on the guard is worn and holds
•
the knife back too low.
The hold down, 7, is too far away from the knife
•
section.
NOTE: The tip of the guard in the top of Figure 37
should be bent upward to allow the knife to rest on the
ledger surface as shown in the bottom of Figure 37.
Shims, 8, between the hold down and cutter bar adjust
the clearance between the hold down and knife
section.
Check the guard alignment by sighting along the
ledger surfaces. An estimate of the guard alignment
can be obtained by sighting along the tips of the
guards, however the important surface to align is the
ledger surface.
HOLD DOWN CLIPS
The hold down clips, 1, keep the crop from forcing the
knife section away from the ledger surface. Keep the
clips adjusted close to the knife section but not so
close that the knife cannot move freely. The hold
down clips are spaced across the cutter bar. There is
not a clip at every guard as the top lip on the guard
helps to hold the knife from lifting too far.
NOTE: The Model 499 with standard guards may have
either one piece hold down clips or two piece,
adjustable hold down clips as shown. The adjustable
clips can be installed on the machines with one piece
clips by ordering a conversion kit.
IMPORTANT: Check and adjust the guard alignment
before checking the hold down clip adjustment.
SECTION 4 - MAINTENANCE
8
8
4837-16
4-27
7
5
6
4
3
1
1
0 to 0.38 mm
(0" to 015")
2
1
37
1
38