SUBSECTION 1OB
OPERATIONAL AIDS
GENERAL
boom limit for the proper maximum angle, proceed as fol-
lows (see Figure 10B-1):
This subsection covers any necessary adjustments to the
operational aids.
1. Elevate the boom to an angle of 80.
2. Loosen the screw which secures the trip lever to the limit
BOOM HOIST LIMIT DEVICE (2100J1005)
switch and adjust the trip lever as required to open the
switch contacts. The switch contacts will make a click to
DESCRIPTION. The boom hoist limit device is used to set the
indicate when they are open.
maximum angle of the boom. When the boom stop block,
mounted on the boom base contacts the limit switch it shifts
NOTE
the boom hoist limit solenoid. At this point, pulling the boom
When the switch is in proper adjustment the switch
hoist control lever back will direct hydraulic oil back to tank
will move 12 before shut-off.
and will not release the boom hoist brake or engage the
boom hoist clutch to raise the boom.
3. Tighten the screw in the trip lever.
ADJUSTMENT. Whenever a boom hoist limit switch has
4. Raise and lower the boom slowly several times to check
been replaced or disturbed the maximum angle that the
the adjustment. Repeat the procedure as necessary to
boom is allowed to reach should be checked. To set the
achieve the proper adjustment.
Figure 10B-1. Boom Hoist Limit Switch Adjustment (2100J1005)
