Summers Superchisel - 5-Section - Manual (Page 47)

3-3
SECTION 3 – CHISEL PLOW OPERATION
7. Continued:
SEQUENCING VALVE OPERATION
– Make sure the part 1 wing lift cylinders are fully extended before the part 2 wings start to
move.
If part 2 wings move, sequencing valve pressure for base end of the 4-1/2 x 16” cylinders
must be increased. To increase the sequencing valve pressure, loosen the jam nut on the
valve (valve is located at the RH side of the center section on the 2nd rank). Use an allen
wrench to turn the set screw on the poppit 1/2 turn inward to increase pressure. Test new
adjustment before turning the set screw anymore. If the valve is set with too much pres-
sure, the part 2 wings will not unfold. To reduce the amount of pressure, turn the set screw
outward.
– Fold and unfold the machine again to make sure that everything is working properly.
– Slowly raise the part 2 wings into transport position.
– Fully retract the part 2 cylinders and let wings rest against transport supports. If part 1 wings
start to rise before part 2 cylinders are completely retracted, the sequencing valve pressure
that feeds rod ends of 5 x 36” cylinders must be increased. To increase the sequencing
valve pressure, loosen the jam nut on the valve (valve is located on the LH side of the center
section on the 2nd rank). Use an allen wrench to turn the set screw on the poppit 1/2 turn
inward to increase pressure. Test new adjustment before turning the set screw anymore. If
the valve is set with too much pressure, the part 1 wings will not rise. To reduce the amount
of pressure, turn the set screw outward.
– Slowly raise wings. Retract part 1 wing lift cylinders fully to allow wings to rest against transport
locks. If wing does not rest against both locks, adjust locks.
– Return machine to field position when sequencing adjustments are complete.
IMPORTANT!
Restrictors are installed in the part 2 wing lowering and raising hydraulic circuit. They are
also installed in the part 1 wing lowering hydraulic circuit. This has been done to reduce the
chance of wing free fall. Do not remove these restrictors.