Summers 3Pt Supersprayer - Manual (Page 33)

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SECTION 3 - SPRAYER OPERATION
4. LEVELING BOOMS
Booms on the Summers cable suspended boom skid sprayer are factory set to be level but may need to be periodically
leveled due to cable stretch. For minor adjustments of 2 or 3 inches the booms are leveled by adjusting the locking nut on
the eye bolts that control spring tension. The adjusting nuts are on top of the boom pivot arms. Major adjustments are as
follows:
a. Loosen nuts on eye bolts to approximately 1/2” from end of eye bolt.
b. Remove tension from cables by supporting booms with jack stands or some other means.
c. Detach chain from quick link and shorten by one link, reconnect chain to quick link and remove support
from booms.
d. Finish leveling inner boom by adjusting the lock nuts on the eye bolt.
e. If the inner boom is still not level, repeat steps 3 and 4.
f. To level outer boom, adjust turnbuckle on single cable to raise or lower end of the outer boom.
5. BOOM BREAKAWAY
The adjustment of the boom breakaway spring is important. The spring controls the pressure between the two ductile
cast breakaway clutches. Since the clutch parts are made of ductile cast, a certain amount of break-in wear is normal
during the first few hours of operation. The factory adjustment MUST BE CHECKED AFTER THE FIRST HOUR OF USE.
The spring pressure is properly adjusted when the boom can be “broken away” with moderate force applied to the end of
the boom. If the boom spring pressure is set too loose, the booms may break away during acceleration or at increased
spraying speeds. If the boom spring pressure is set too tight, the booms may not break away when colliding with an
obstruction.
Two point Sprayers and those equipped with windshields have a stabilizer latch attached to each part 1 boom.
The stabilizer assists the break away in keeping the boom in field position. The eye bolt must be adjusted to preload the
stabilizer spring. This is accomplished as follows:
a. Unfold booms from transport position to a configuration where they are still folded in the middle.
b. The pin for the stabilizer latch should just slide into the hole with 1/16 to 1/8” to spare between the pin
and the eye bolt.
c. If adjustment is necessary loosen the jamb nuts on the eye bolt and adjust the eye to take up most of
the slack on the pin. The pin should still be free to permit removal and insertion.
d. Unfold booms completely and verify pin is tight and spring is preloaded. Pin should not be able to be
removed when boom is in spray position. If pin is loose eyebolt breakage may occur more often.
6. PART 2 LATCH
Part 2 latches are preset at the factory to a spring installed height of 1-15/16”. Field adjustment of latches may be
necessary to provide enough pressure to suit operator needs. Excessive tightening will increase damages if the boom
strikes a secure object. After adjustment the operator should force part 2 booms to break away insuring that the spring
has room to collapse and boom will break away.
7. PIVOT ARM STOP BOLT ADJUSTMENT
Pivot stops are adjusted at the factory, but adjustment may be required due to wear in. Pivot and cylinder stops must be
adjusted at the same time. Adjustment is performed as follows:
1. Place sprayer on a level surface and verify the pivot arms are vertical.
2. Activate tip lift slightly to remove pressure on stop bolts.
3. Adjust bolts to desired position.
4. Retract cylinder to verify that it contacts the stop at the same instant cylinder closes.
5. Cylinder is adjusted by loosening the clevis pinch bolt and turning the clevis to the desired setting.
6. Tighten clevis pinch bolt after reaching desired setting.
CAUTION!
THE BREAKAWAY IS UNDER HIGH SPRING TENSION.