Reference
Only
HOISTS
MLC650 SERVICE/MAINTENANCE MANUAL
5-54
Published 09-09-16, Control # 229-09
Drum 4
for the following procedures.
The gearboxes should be drained and refilled after every 200
hours of drum operation and thereafter every 1000 hours.
This interval may be adjusted according to the results of oil
analysis.
NOTE:
It is better to change the oil when the gearbox is
warm (not hot).
To prevent harmful contaminants from entering the
gearbox, thoroughly clean components before
disconnecting or connecting them.
Only fill after the drum assembly is installed into the
rotating bed.
1.
Lockout-tagout the crane.
2.
Remove the breather plug (1) to vent the gearbox.
3.
Remove the drum guard assembly (7) to access the
radial quick-drain valve (4b).
4.
Remove the dust caps (3) from the quick-drain valves
(4a and 4b).
5.
Place the non-fitting end of the quick-drain drainer
assembly hose (6) into an appropriate container for
collecting the drained oil.
6.
Connect the quick-drain drainer assembly hose to the
quick-drain valve (4a, see View B).
7.
When the draining is finished, disconnect the quick-drain
drainer assembly hose.
8.
Connect the quick-drain drainer assembly hose to the
radial quick-drain valve (4b) to drain the remaining oil.
9.
When the draining is finished, remove the quick-drain
drainer assembly hose.
10.
Fasten the dust caps to the quick-drain valves.
11.
Fill the gearbox with specific oil as follows.
Manual Fill Procedure (very slow process)
a.
If not already done, remove the breather plug (1).
b.
Add oil through the fill port (2) using an appropriate
funnel until the oil level is halfway up the transparent
oil level plug (5). Do not overfill.
c.
Install the breather plug.
Power Fill Procedure (recommended)
a.
If not already done, remove the breather plug (1).
b.
Remove the dust cap (3) from quick-drain valve
(4a).
c.
Thoroughly clean the inside of the quick-drain
drainer assembly hose (6).
d.
Connect the quick-drain drainer assembly hose to
the quick-drain valve. Make sure the fitting is all the
way on, so that the poppet inside the valve opens.
e.
Connect the hose from the quick-drain drainer
a s s e m b l y ( 6 ) t o a p o r t a b l e p u m p , e i t h e r
hydraulically powered or hand powered.
f.
Slowly pump oil into the gearbox until the oil level is
halfway up the transparent oil level plug (5). Do not
overfill.
g.
When the gearbox is filled, remove the quick-drain
drainer assembly hose.
h.
Fasten the dust cap to the quick-drain valve.
i.
Install the breather plug.
12.
Check the oil level after operating the hoist. If necessary,
add oil through the fill port.
13.
Thoroughly clean the quick-drain drainer assembly hose
and store it in the parts box.
Summary of Contents for MLC650
Page 1: ...R e f e r e n c e O n l y Service Maintenance Manual Manitowoc MLC650 ...
Page 2: ...R e f e r e n c e O n l y ...
Page 4: ...R e f e r e n c e O n l y THE ORIGINAL LANGUAGE OF THIS PUBLICATION IS ENGLISH ...
Page 375: ...R e f e r e n c e O n l y ...
Page 376: ...R e f e r e n c e O n l y ...
