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Reference
Only
MAINTENANCE
2250 MAX-ER 2000 OPERATOR’S MANUAL
6-4
Published 01-08-13, Control # 049-05
.
CAUTION
Check this distance after adjusting limit switch. Distance from
both ends of MAX actuator to outside edge of actuator bracket
must be equal. Limit switch could be damaged from over-travel if
either end of actuator is cocked.
FIGURE 6-5
CAUTION
Before adjusting limit switch, move limit switch up or down in
slots so edge of roller is even with edge of actuator bracket.
Limit switch will not trip open if positioned too low in slots.
Limit switch could be damaged from over-travel if positioned
too high in slots.
MAX
Actuator
View B
View A
View at Right Side
Boom Hinge Pin
Actuator
Bracket
Centerline
Boom Butt
MAX
Limit Switch
(Crane)
Connect electric wires to normally
closed contacts (2 and 5) inside
limit switches.
Boom Angle
Actuator
Position
83°
All #79 or #79-44 Boom Lengths with
Luffing Jib Removed
A
85°
Less than 200 ft (61 m) of #79 Boom with
#44 Luffing Jib Installed
B
Less than 220 ft (67,1 m) of #79-44 Boom with
#133 or 133A Luffing Jib Installed
87°
200 ft (61 m) or More or #79 Boom with
#44 Luffing Jib Installed
C
220 ft (67,1 m) or More or #79-44 Boom with
#133 or 133A Luffing Jib Installed
Position A - 83°
Use Upper Right
Actuator Holes
Position B - 85°
Use Lower Center
Actuator Holes
Position C - 87°
Use Upper Left
Actuator Holes
A487
A1162
MAX
Limit Switch
(MAX-ER)