MacDon 3020 Pull-Type Windrower - Manual (Page 53)

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MAINTENANCE/SERVICE
TELESCOPING HITCH PIN
Lubricate pin (A) every 100 hours or once per
season with a lightweight (SAE 30) oil.
LEFT WHEEL LOCK ASSEMBLY
Lubricate handle (B) and lock assembly every 100
hours or once per season with a lightweight (SAE
30) oil.
HEADER FLOTATION
Header flotation should be set so header can be
lifted with 100 to 150 lbs. force (450 to 650 N) at
right hand divider rod.
NOTE: Check float with cutterbar 6 to 8 inches
(150 to 200 mm) off ground.
To adjust:
1. Support cutterbar on 6 inch (150 mm) blocks.
2. Turn float adjusting screw (A) clockwise to
increase float (that is, less force will be required
to lift header as described). Turn float screw
counterclockwise to reduce float.
NOTE: Keep threads of float adjusting screw (A)
greased.
NOTE: For 21' and 25' headers with pick-up reel,
an extra leaf spring can be added.
To install extra spring:
- Back off bolt (A).
- Block cutterbar with 6” (150 mm) blocks
each end.
- Remove spacer from float spring pocket
(both ends) to make room for the fourth
spring.
OIL TELESCOPING HITCH PIN
A
OIL LEFT WHEEL LOCK ASSEMBLY
B
HEADER FLOTATION ADJUSTMENT
A