Manitowoc Published 09-05-14, Control # 226-02 4-1
14000 SERVICE MANUAL BOOM
SECTION 4
BOOM
AUTOMATIC BOOM STOP (LIMIT SWITCH)
Boom stop limit switch (6, Figure 4-2) stops the boom and
applies the boom hoist brake when the boom is raised to
Angle A shown in Figure 4-1
.
Maintenance
At least once weekly, check that the boom stop limit switch
stops the boom at the specified maximum angle. If not,
replace any worn or damaged parts and/or adjust the boom
stop.
WARNING
Falling Attachment Hazard
Do not operate crane unless boom stop is properly
adjusted and operational. Do not adjust maximum
operating angle higher than specified. Boom could be
pulled over backward or collapse, causing death or
serious injury.
FIGURE 4-1
A
84° for #76 Boom WITHOUT Luffing Jib
88.5° for #76 Boom WITH Luffing Jib
14CSM4-1
A
Item Description
1Boom Butt
2 Switch Assembly
1
2