Manitowoc 18000, Руководство по техническому обслуживанию, Страница: 117 / 316

Reference
Only
18000 SERIVCE/MAINTENANCE MANUAL HYDRAULIC SYSTEM
Manitowoc
Published 12-05-17, Control # 035-23
2-23
2
Travel Handle and Speed Check
Verify that travel movement responds correctly to handle
commands. Count the number of revolutions crawler roller
rotates in one minute to determine travel speed.
NOTE: Final evaluation of travel system is completed in
test area.
1. Put a timing mark on crawler roller at front of crane
(
Figure 2-20 ).
2. Start engine and set speed at high idle.
3. Push both crawler control handles fully FORWARD to
travel crane at full speed.
4. Have an assistant count number of revolutions timing
mark makes.
5. Number should be 5.3 to 5.8 revolutions in one minute.
6. If count is not within this range, determine cause of
problem and take corrective action.
Swing and Drum Speed Checks
Check operating speeds for functions listed in Table 2-10
with engine running at high idle (1,800 rpm), control handles
moved fully forward and back, with no load, and no rope.
Read speeds on digital display.
If proper speeds are not indicated, determine cause of
problem and take corrective action.
FIGURE 2-20
Crawler
Roller
P1939
Timing
Mark