MacDon M155 Unloading And Assembly Instructions page 120

6. Adjust position of the center-link cylinder (A) with the
REEL UP and REEL DOWN switches on the GSL until
the hook is positioned above the header
attachment pin.
IMPORTANT:
Hook release must be down to enable self-locking
mechanism. If the release is open (up), manually push it
down after hook engages header pin.
7. Lower center-link (A) onto the header with REEL
DOWN switch until it locks into position (hook
release [B] is down).
8. Check that center-link is locked onto header by
pressing the REEL UP switch on the GSL.
CAUTION
Check to be sure all bystanders have cleared the area.
9. Press the HEADER UP switch (A) to raise header to
maximum height.
10. If one end of the header does NOT fully raise, rephase
the lift cylinders as follows:
a. Press and hold the HEADER UP switch until both
cylinders stop moving.
b. Continue to hold the switch for 3–4 seconds.
Cylinders are now phased.
NOTE:
It may be necessary to repeat this procedure if there is
air in the system.
214298
ASSEMBLING THE WINDROWER
Figure 3.177: Hydraulic Center-Link
Figure 3.178: Ground Speed Lever
108
Revision A