LUBRICATION
NBT40 SERVICE MANUAL
8-8
Published 8-01-2017 Control # 287-11
Check Hoist Brake Oil
To check the hoist brake oil, remove the inspection plug (2,
Figure 8-3) and visually inspect the oil level. The oil should
be visible within 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 8-3), inspection plug
(2) and 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 8-2). 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
r a n g e , c o n t a c t M a n i t o w o c C r a n e C a r e f o r
recommendations.
.
Hoist Gearbox Oil
Check Hoist Gearbox Oil Level:
•
Rotate the drum until the oil fill plug (1, (Figure 8-4) 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 8-2)
•
Re-install fill/level plug (1).
Fill Hoist Gearbox with Oil.
•
To fill with oil, rotate the drum so the gearbox fill/level
port (1, (Figure 8-4) 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 8-2).
•
Drain and Fill Hoist Gearbox with Oil.
•
To drain and add new oil, remove the vent plug
(3, Figure 8-4) 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.
•
Screw a 1” pipe into the drain plug hole to assist with
draining the oil.
•
Drain the oil.
•
Remove the 1” drain pipe.
•
Install oil drain plug (2).
•
Install a 1” pipe with elbow into the fill hole (1) to assist
with adding 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 8-2).
•
Remove the 1” fill pipe.
•
Install the inspection plug (1).
•
Install the vent plug (3)
Hoist gear 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.
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 8-3
7462-21
1
2
3
!
Reference Only
Summary of Contents for National Crane NBT40 Series
Page 1: ...Service Manual National Crane NBT40 Series R e f e r e n c e O n l y ...
Page 2: ...R e f e r e n c e O n l y ...
Page 216: ...SCHEMATICS NBT40 SERVICE MANUAL 10 2 THIS PAGE BLANK R e f e r e n c e O n l y ...
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