National Crane 1-21-2019 Control # 104-07 8-7
1400A SERVICE MANUAL LUBRICATION
1. Fully extend and set the outriggers.
2. Apply grease at all contact points for the wear pads on
the top of the 2
nd
section through the access holes in the
1
st
section with a grease gun (Figure 8-3).
3. Extend the boom to line up the access holes on the 2
nd
section with the wear pads on the 3
rd
section. Apply
grease to all contact points for the 3
rd
section wear pads
with a grease gun.
4. Extend the boom to line up the access holes on the 3
rd
section with the wear pads on the 4
th
section. Apply
grease to all contact points for the 4
th
section wear pads
with a grease gun.
5. Raise the boom to at least 75°.
6. Extend the boom about 1/3 and retract to spread the
grease.
7. Repeat steps 2 - 5. Extend the boom about 2/3 and
retract to spread the grease.
8. Repeat steps 2 - 5. Fully extend and retract the boom to
spread the grease.
Boom Lubrication Side/Bottom Wear Pads
Recommended lubricant is EP-3MG grease.
1. Fully extend and set the outriggers.
NOTE: A fully extended boom at horizontal needs to have
an assist from a crane or forklift to retract. Lift the
front of the boom enough to relieve pressure on the
bottom wear pads. This should be sufficient for the
boom to retract.
2. Lower the boom to horizontal.
3. Fully extend the boom and apply grease to all contact
points at the side and bottom of the 2
nd
,
3
rd
, and 4
th
sections with a brush.
4. Extend and retract the boom several times until the
grease is evenly spread.
5. Repeat steps 3 and 4 as necessary to ensure the boom
is fully lubricated.
Hoist Brake Oil
Check Hoist Brake Oil
To check the hoist brake oil, remove the inspection plug
(Figure 8-4) and visually inspect the oil level. The fluid
should be visible within the bottom of the inspection hole. If
more fluid is needed, add through the brake oil vent and fill
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 (Figure 8-4),
inspection plug and vent plug and drain the brake oil.
Reinstall drain plug and add fluid at the brake oil vent hole
until oil is at the bottom level of the inspection hole. Install the
inspection plug and the oil vent and fill plug. See
“Lubrication” on page 8-3.The hoist brake fill capacity
is 0.23 liter (.25 quart).
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.
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 8-3
Access Holes 2
ND
Section Wear Pad
Access Holes 3
RD
Section
Wear Pad
Access Holes 4
TH
Section
Wear Pad
1
ST
Boom
Section
Fo
r
Reference
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