Summers Truck Supersprayer - Manual (Page 27)

SECTION 3 - SPRAYER OPERATION
3.3
Boom lead is the distance the outer end of the boom leads the inner end of boom. Adjustment from the factory
setting of 1 to 3 feet is accomplished by loosening the clamp at outer ends of the spring loaded cable and mov-
ing the boom to the preferred position and tightening the cable clamp. The outer boom can be set to lead the
inner boom by adjusting the gap distance at the middle hinge. Gap distance is adjusted by loosening the 5/8”
jam nuts and turning the 5/8” bolts inward or outward. If the gap between the booms is too small the boom will
be less likely to break away at the middle hinge point when the boom collides with a fixed object.
WARNING!
THE BOOMS ON SUMMERS SPRAYERS ARE NOT DESIGNED TO CONTACT THE GROUND
OR SOLID OBSTRUCTIONS AT FIELD SPEEDS. THE OPERATOR MUST SLOW DOWN TO
PREVENT DAMAGE, IF BOOM IS IN DANGER OF CONTACTING AN OBJECT. THIS IS TRUE
EVEN WITH THE BOOM SPRING PRESSURE PROPERLY ADJUSTED. SUMMERS SPRAYER
BOOMS ARE NOT WARRANTED FROM DAMAGE BECAUSE OF A COLLISION WITH AN
OBSTRUCTION.
3. LEVELING BOOMS
Booms on the Summers cable suspended boom skid sprayer are factory set to be level but may need to be peri-
odically 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 re-
move 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.
4. BOOM BREAKAWAY
CAUTION!
THE BREAKAWAY IS UNDER HIGH SPRING TENSION.
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.