Manitowoc National Crane NBT40-1 Series User Manual

7-8 3-29-2018 Control # 610-00
LUBRICATION NBT40-1 SERIES OPERATOR MANUAL
Hoist Brake Oil
Check Hoist Brake Oil
To check the hoist brake oil, remove the inspection plug (2,
Figure 7-3) and visually inspect the oil level. The oil should
be level with the bottom of the inspection hole. If more oil is
needed, add through the vent/fill (1) plug hole until oil is at
the bottom level of the inspection hole.
Drain /Add New Hoist Brake Oil
To drain and add new oil:
• Remove the drain plug (3), (Figure 7-3.) the inspection
plug (2) and the vent plug (1).
• Drain the brake oil.
• Reinstall drain plug (3) and add oil at the brake oil vent
hole (1) until oil is at the bottom level of the inspection
hole (2). See (Table 7-2). The hoist brake fill capacity
is 0.23 liter (.25 quart).
• Install the inspection plug (2) and the oil vent and fill
plug (1).
NOTE: Brake 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.
.
Hoist Gearbox Oil
Check hoist gearbox oil level:
• Rotate the drum until the oil fill/level plug (1, Figure 7-4)
is visible in the inspection hole.
• Remove the fill/level plug (1) and visually inspect the oil
level. The oil should be level with the bottom of the
inspection/fill hole. If more oil is needed, add oil (See
Table 7-2).
• Re-install fill/level plug.
• To drain and add new oil, remove the vent plug (3,
Figure 7-4) and then screw a 1” pipe into the drain plug
hole (2) to allow the oil to drain. Remove the drain plug
(2) with a hex head socket and drain hydraulic oil.
Remove the 1” drain pipe and install drain plug (2).
Fill Hoist Gearbox with Oil.
• To fill with oil, rotate the drum so the gearbox fill/level
port (1, (Figure 7-4) is visible through the upper hole.
• Remove fill/level plug (1) with a hex socket.
• Install a 1” pipe with elbow into the fill hole (1) to assist
with adding oil.
• Remove the vent plug (3) to assist with adding the oil.
• Fill gear box with 3.3 l (3.50 qt) of oil or until oil is at the
bottom level of the inspection hole with gear lube oil.
See (Table 7-2).
•
Drain and Fill Hoist Gearbox with Oil.
• To drain and add new oil, remove the vent plug
(3, Figure 7-4) to assist with draining the oil.
• Remove fill/level plug (1) with a hex socket.
• Remove the drain plug (2) with a hex head socket.
DANGER
Do not, under any circumstances, work at an elevated
height without using proper fall protection as required by
local, state or federal regulations.
DANGER
Do not use EP type gear lubes in the brake section. This
may prevent proper operation and cause the load to fall
resulting in serious injury or death.
!
!
FIGURE 7-3
7462-21
1
2
3

Manitowoc National Crane NBT40-1 Series Specifications

General

Brand	Manitowoc
Model	National Crane NBT40-1 Series
Category	Construction Equipment
Language	English