MacDon PW7 Pick-Up Header - Manual (Page 29)

SECTION 3 – SETUP COMPLETION
Form 169149 Revision E 23
Remove Cylinder Shipping Braces
NOTE: Do not remove yellow shipping braces
(D) until unit is laid down and arms are moved to
working position.
a) Support front of hold down assembly (E) and
remove the top lynch pins, washers and
cylinder pins securing braces (D), both sides.
b) Rotate braces down. Raise cylinders until
aligned with top pin position and reinstall top
cylinder pins, washers and lynch pins.
c) Remove bottom lynch pins and washers.
Remove braces and reinstall the washers and
lynch pins, both sides.
Remove Cylinder Shipping Braces
3.5 TESTING HYDRAULIC HOLD DOWN
NOTE: All testing should be performed
with the header/pickup in operating
position so that the wheels are on the
ground and the distance from the ground
to the center of the rear roller is about 14”
(356mm).
a) The hold down is controlled by the reel lift
control located in the combine cab. Activate
the control to lift the hold down. The
cylinders should begin lifting
simultaneously.
b) Lift the hold down completely to the top.
Continue to force the cylinders up for one to
two seconds to ensure the cylinders re-phase.
Both cylinders should be fully extended.
c) Lower the hold down. The cylinders should
lower at the same time and at the same rate.
It should take from 12 to 18 seconds for the
hold down to lower from the highest point.
d) Completely lower the hold down. The
cylinders should stop at the same time. It is
acceptable for the slave cylinder to remain
extended from 0 to 1/2” (13mm) when the
master cylinder is fully retracted.
Should the hydraulics not perform as above refer
to the procedures in the service section of this
manual.
D
E