Manitowoc National Crane NBT60L User Manual

LUBRICATION PROCEDURE AND CHARTS OPERATOR MANUAL NBT60L
5-8 Published 09-06-2019 Control # 691-01
Hoist Gearbox and Brake Oil
NOTE: The NBT60L cranes feature two hoists: Main and if
equipped, Auxiliary. Use the inspection and oil
change procedures below for each hoist.
The hoist(s) share(s) oil between the gearbox and brake.
The hoist gearbox and brake oil should be checked through
the sight glass every 500 hours of operation, or every three
months. The oil should be changed after the first 100 hours
of operation, and every 1,000 hours or 3 months thereafter.
The hoist oil capacity is 5.44 liters (11.5 pints). See
Lubrication Points, page 5-3 for oil type and maintenance
intervals.
NOTE: Hoist lubricants are satisfactory for operation in
temperatures from -23° C to 66° C (-10° F to
+150° F). For operation outside this range, contact
Manitowoc Crane Care for recommendations.
Inspect the Oil Level
Check the oil level in the sight glass (1, Figure 5-3) on the
hoist. When cool and not in operation, check the oil level in
the sight glass. The oil should be approximately half-way up
in the sight glass. The hoist gearbox and brake holds a
maximum of 5.44 liters (11.5 pints) of oil.
Replace the Hoist Oil
The hoist oil drain and fill plug is located on the drum. The
plug can be accessed through one of two access holes. The
bottom (6 o’clock position) access hole (3, Figure 5-3) is
used when draining the oil. The access hole on the side (3
o’clock position) is the used when filling the hoist with oil (4).
When draining the hoist oil, use a short, 1 inch pipe with
standard 1-11.5 NPSM thread. The pipe is installed in the
larger, outer threads around the drain and fill plug and will
serve as a drain for the oil. The pipe can also be used as
needed when filling the hoist with oil.
The vent plug (2) is a one-way vent. It must be clean and
unobstructed. Do not paint over the vent plug for replace it
with a solid plug.
Drain the Gearbox and Brake Oil
1. Remove the vent plug (2, Figure 5-3). Clean with solvent
as needed. Set aside for later use.
2. Rotate the hoist drum so the drain and fill plug
(Figure 5-4) is aligned with the oil drain access hole at
the 6 o’clock position (3, Figure 5-3).
DANGER
Do not, under any circumstances, work at an elevated
height without using proper fall protection as required by
local, state or federal regulations.
!
FIGURE 5-3
1
2
4
3
Oil Drain
Oil Fill
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Manitowoc National Crane NBT60L Specifications

General

Brand	Manitowoc
Model	National Crane NBT60L
Category	Construction Equipment
Language	English