MacDon M155 Unloading And Assembly Instructions page 190

12. Push down on the rod end of link cylinder (A) until hook (B)
engages and locks onto the header pin.
IMPORTANT:
The hook release must be down to enable the self-locking
mechanism. If the release is open (up), manually push it
down after the hook engages the header pin.
13. Check that center-link (A) is locked onto the header by
pulling upward on the rod end of the cylinder.
14. Start the engine.
15. Press HEADER UP switch (A) to raise the header to its
maximum height.
16. If one end of the header does NOT fully rise, 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 to fully
phase the cylinders.
NOTE:
It may be necessary to repeat this procedure if there is air in
the hydraulic system.
262320
ATTACHING HEADERS
Figure 6.124: Hydraulic Center-Link
Figure 6.125: Ground Speed Lever
174
A
A
B
Revision A