MacDon 871 Combine Adapter User Manual
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FLOAT SPRING REMOVAL
21’ 972 Headers
The 871 Adapter is equipped with 8 float springs per side to adequately float headers up to 36’ wide. For the
21’ 972 Header, this may cause header float to be excessive even when the float adjustment screw is fully
backed off. In this case it may be necessary to remove the third float spring from the top on both sides of the
adapter.
To remove float spring, proceed as follows:
CAUTION: Spring removal must be done
with adapter removed from header and
leaf springs unloaded (stored energy
released). The first steps of this procedure will
safely unload leaf spring energy after removing
adapter from the header.
1. Procedure MUST be performed on level area.
2. Raise reel to maximum height, engage reel props
and lower reel onto props.
3. Raise header to maximum height and engage
stops on feeder house cylinders.
4. Remove float lockout pins (C) and bolts (B).
NOTE: It may be necessary to adjust float to allow
removal of pins (C) and bolts (B). See “Header
Flotation” in Operation section.
5. Remove bolts (D) which lock adapter into header.
6. Disconnect all hydraulic lines, wiring harness, drive
line and pump/gearbox assembly. (Remove plastic
wear strip from feed pan if necessary.)
7. Lower jack stand at left side of header.
8. Position 8” blocks at outward sides of adapter and 4”
blocks under lowered jack stand.
9. Disengage feeder house cylinder stops.
10. Lower header onto blocks and place floor jack under
feed pan of adapter. Loosen cutter bar anchor bolts
and swing anchors (G) clear of cutter bar. Lower pan
on blocks and remove jack.
11. Remove center link pin (F). It may be necessary to
rotate link to allow removal.