
Reference
Only
Manitowoc
Published 12-05-17, Control # 035-23
4-5
18000 SERVICE/MAINTENANCE MANUAL
BOOM
4
Adjustment
NOTE:
All reference to LED is past production only.
1.
Park the crane on a firm level surface or level the crane
by blocking under the crawlers.
2.
Make sure the proper adjusting rod is installed (see
):
•
Rod (2a) for BOOM ONLY
•
Rod (2b) for boom WITH LUFFING JIB
3.
Raise the boom to specified
Angle A
(
monitoring the angle on the mechanical indicator or on
the operating conditions screen of the front-console
display.
4.
Verify that the boom is at the proper Angle A:
a.
Place an accurate digital level (12) on the boom butt
as shown in
. The corresponding
Digital
Level Angle
should appear on the digital level.
b.
Raise or lower the boom as necessary.
5.
If the boom stops at the specified angle, further
adjustment is not needed.
•
If the boom stops before reaching the specified
angle, go to
•
If the boom reaches the specified angle before it
stops, go to
6.
If the boom stops before reaching the specified angle:
a.
Loosen jam nut (3, View B).
b.
Turn adjusting rod (2a or 2b) all the way into
coupling (4).
c.
Boom up slowly until the boom the reaches
specified angle.
d.
Turn adjusting rod (2a or 2b) out against boom butt
(1) until limit switch (5) “clicks” open and the LED is
OFF (View A).
e.
Tighten jam nut (3).
7.
If the boom reaches the specified angle before it stops:
a.
Loosen jam nut (3, View B).
b.
Turn adjusting rod (2a or 2b) out against boom butt
(1) until limit switch (5) “clicks” open and the LED is
OFF (View A).
c.
Tighten jam nut (3).
8.
Check that actuator rod (11) over-travels the limit switch
as shown in View A.
9.
Test the adjustment as follows:
a.
Lower the boom several degrees below the
specified Angle A.
b.
Slowly raise the boom.
c.
Boom must stop at specified Angle A.
If the
boom does not stop at the specified angle:
-
Stop raising the boom (move control handle to
off).
-
Lower the boom several degrees below the
specified angle.
d.
Repeat adjustment steps
.
Actuator Rod Replacement
, View B for the following procedure.
1.
Remove damaged actuator rod (11).
2.
Slide spring washers (7 and 9) and spring (8) over new
actuator rod (11) while sliding the actuator rod into the
bracket assembly.
3.
Position actuator rod (11) so the tapered end just
touches limit switch (5) roller (View B). The actuator rod
must not depress the limit switch roller.
4.
Drill a 1/4 in (6,35 mm) hole through spring washer (9)
and actuator rod (11).
5.
Install dowel pin (10).
6.
Install proper adjusting rod (2a or 2b).
FIGURE 4-3
Boom Stop
Angle
Digital Level
Angle
83°
70.7°
84°
71.7°
85°
72.7°
86°
73.7°
87°
74.7°
88°
75.7°
12
Against Bottom Chord
of Boom Butt on Right
Side of Crane
Содержание 18000
Страница 1: ...R e f e r e n c e O n l y Service Maintenance Manual Manitowoc 18000 ...
Страница 2: ...R e f e r e n c e O n l y ...
Страница 4: ...R e f e r e n c e O n l y THE ORIGINAL LANGUAGE OF THIS PUBLICATION IS ENGLISH ...
Страница 210: ...R e f e r e n c e O n l y NOTES SKETCHES AND PHOTOGRAPHS ...
Страница 315: ...R e f e r e n c e O n l y ...
Страница 316: ...R e f e r e n c e O n l y ...