Manitowoc Published 05-03-17, Control # 228-03 2-17
16000 SERVICE/MAINTENANCE MANUAL HYDRAULIC SYSTEM
5. Turn on the travel 2-speed. The travel speed should
increase and the travel screen should indicate that the 2-
speed is on.
6. Bring the upperworks to a complete stop, move the
control handles to off, and turn on the travel park.
7. The travel handles should be inoperable.
8. The travel screen should indicate no handle or pump
commands and that the travel park brakes are applied.
Speed Checks
Travel Speed
Perform the following check in an area where the crane can
be traveled without interference:
1. Put a timing mark on the front crawler roller
(Figure 2-14
).
2. Start and run the engine at high idle.
3. Push both crawler control handles fully forward to travel
the crane at full speed.
4. Have an assistant count the number of revolutions the
timing marks makeāthe number must be within ranges
given in Table 2-10
.
5. If speed is not within the specified range, contact the
Manitowoc Crane Care Lattice Team.
Swing and Drum Speeds
Perform the following check in an area where the crane can
be swung without interference.
Check operating speed on the diagnostic screens
(Figure 2-24
) for swing and each drum in the following
conditions:
⢠Engine running at high idle
⢠Control handles moved fully forward and back
⢠No load
⢠No rope on drums
Speeds must be within the ranges specified in Table 2-10
. If
proper speeds are not indicated, contact the Manitowoc
Crane Care Lattice Team.
FIGURE 2-14
Front
Crawler
Roller
IMG_6085
Timing
Mark