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LUBRICATION
600H SERVICE MANUAL
8-8
08-19-2022 Control # 092-13
Recommended lubricant is EP-3MG grease.
1.
Fully extend and set the outriggers. Refer to
(Figure 8-2.)
2.
Apply grease to all wear pads and contact surfaces at
the side and bottom of all beam sections and lower
surface of the jacks with a suitable brush or putty knife.
3.
Extend and retract the outriggers several times until the
grease is evenly spread.
4.
Repeat as necessary.
Hoist Brake Oil
Check Hoist Brake Oil
.
To check the hoist brake oil, remove the vent and fill plug
(Figure 8-3) and visually inspect the oil level. The maximum
fill capacity for the hoist brake is 0.23 liter (0.25 quart).
Drain /Add New Hoist Brake Oil
To drain and add new oil, remove the drain plug (Figure 8-3),
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. The hoist brake
fill capacity is 0.23 liter (0.25 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 National Product Support for
recommendations.
.
Hoist Gearbox Oil
Hoist Gearbox Oil Change
Gearbox oil is drained by first removing the drain plug (
33,
Figure 8-4) by rotating the drum so that the plug is visible
through the lower hole in the side plate (
See view 1
). Screw
in a piece of 1 in pipe to allow the oil to drain, and then with a
hex wrench remove the drain plug located inside of the 1
inch pipe (
See view 2
). Examine the used oil for signs of
significant metal deposits and then dispose of it properly.
Remove the 1-inch pipe.
Rotate the drum so that the port is visible through the upper
hole in the side plate. Install a 1 in pipe with elbow into the
upper hole in the side plate (
See view 3
). Fill the gearbox
with 1.42 liters (1.50 quarts) of oil. Remove the pipe and
elbow, then replace the plug (33).
For information about changing hoist brake oil, see
DANGER
Do not, under any circumstances, work at an elevated
height without using proper fall protection as required by
local, state or federal regulations.
CAUTION
The maximum fill capacity for the hoist brake is 0.23 liter
(0.25 quart). Over-filling the hoist brake can cause
damage to the hoist.
FIGURE 8-2
8352-2
!
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
9468
Brake Oil Vent
and Fill Plug
Brake Oil Drain
Plug
Summary of Contents for 600H
Page 1: ...Service Manual National Crane 600H R E F E R E N C E O N L Y...
Page 6: ...THIS PAGE BLANK R E F E R E N C E O N L Y...
Page 136: ...BOOM 600H SERVICE MANUAL 4 62 08 19 2022 Control 092 13 R E F E R E N C E O N L Y...
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