Manitowoc MLC300 Service And Maintenance Manual

Reference Only
HOISTS MLC300 SERVICE/MAINTENANCE MANUAL
5-28
Published 11-22-17, Control # 257-02
Oil Change Procedure
See Figure 5-15 for the following procedure.
Change the oil when the gearboxes are warm.
NOTE: To prevent harmful contaminants from entering a
gearbox, thoroughly clean components before
disconnecting or connecting them.
1. Lockout-tagout the crane.
2. Remove the plug (2) to vent the gearbox.
3. Remove the dust cap from the quick-drain valve (4).
4. Place the hose from the quick-drain drainer assembly
(see Figure 5-14
) into an appropriate container for
collecting the drained oil.
5. 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 and allows the
oil to drain from the gearbox.
6. Once the gearbox has finished draining, remove the
quick-drain drainer assembly.
7. Fasten the dust cap to the quick-drain valve.
8. Fill the gearbox with specified oil:
Manual Fill Procedure
a. If not already done, remove the plug (2).
b. Using an appropriate funnel, add oil through the fill
port (3) until the oil level is halfway up the sight
gauge (5). Do not overfill.
c. Install the plug.
Power Fill Procedure
a. Remove the plug (2) to vent the gearbox.
b. Remove the dust cap from the quick-drain valve (4).
c. Thoroughly clean the inside of the hose for the
existing quick-drain drainer assembly or use a new
quick-drain drainer assembly for filling the gearbox.
NOTE: Additional quick-drain drainer assemblies can be
purchased from your Manitowoc Cranes dealer.
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
assembly to a portable pump, either hydraulically
powered or hand powered.
f. Slowly pump oil into the gearbox until the oil level is
halfway up the sight gauge (5). Do not overfill.
g. Once the gearbox is filled, remove the quick-drain
drainer assembly.
h. Fasten the dust cap to the quick-drain valve.
i. Install the plug.
9. Adjust the oil level, as required, after operating the drum.
10. Thoroughly clean the quick-drain drainer assembly and
store it in the parts box.

Manitowoc MLC300 Specifications

General

Brand	Manitowoc
Model	MLC300
Category	Construction Equipment
Language	English