7
FORM NO. L-20003-AC-0620
FRICTION FACING ADJUSTMENT
Refer to Figure 4.
1. With a 0.020 In. [0.508 mm] to 0.060 In. [1.524 mm]
feeler gauge, check the gap between the Friction Disc
(Item 11) and the Friction Facing (Item 12).
2. If the gap is less than 0.020 In. [0.508 mm] loosen the
Set Screw (Item 19) and rotate the Adjustment Nut
(Item 2) counterclockwise until one of the Set Screw’s
holes is over the flat in the Hub (Item 1) and the feeler
gauge can be inserted between the Friction Facing
(Item 12) and the Friction Disc (Item 11).
3. If the gap is greater than 0.060 In. [1.524 mm] loosen
the Set Screw (Item 19) and rotate the Adjustment Nut
(Item 2) clockwise until one of the Set Screw’s holes is
over the flat in the Hub (Item 1) and the feeler gauge
can be inserted between the Friction Facing (Item 12)
and the Friction Disc (Item 11).
4. Tighten the Set Screw (Item 19) to the recommended
torque (See Table 7).
NOTE: Do not adjust the gap between the Friction Facing
(Item 12) and the Friction Disc (Item 11) to less than
0.020 In. [0.508 mm]. The Clutch will not disengage if
the gap between the Friction Disc and Friction Facing
is closed.
FIGURE 4
0.020 In. to 0.060 In.
[0.508 mm to 1.524 mm]
12
11
19
2
1
TABLE 7
L
E
D
O
M
)
9
1
M
E
T
I
(
W
E
R
C
S
T
E
S
N
O
I
T
P
I
R
C
S
E
D
E
U
Q
R
O
T
G
N
I
N
E
T
H
G
I
T
W
F
2
3
-
8
]
m
•
N
4
2
.
2
[
.
s
b
L
.
n
I
0
2
W
L
2
3
-
8
]
m
•
N
4
2
.
2
[
.
s
b
L
.
n
I
0
2
W
M
0
2
-
4
/
1
]
m
•
N
6
9
.
8
[
.
s
b
L
.
n
I
0
8
W
H
0
2
-
4
/
1
]
m
•
N
6
9
.
8
[
.
s
b
L
.
n
I
0
8
NOTE
Nexen pneumatically actuated devices require clean, pressure regulated air for maximum performance and life.
All seals in Nexen pneumatically operated devices are lubricated for life, and do not require additional lubrication.
However, some customers prefer to use an air line lubricator, which injects oil into the pressurized air, forcing
an oil mist into the air chamber. This is acceptable, but care must be taken to ensure once an air mist lubrication
system is used, it is continually used over the life of the product as the oil mist may wash free the factory
installed lubrication.
Locate the lubricator above and within ten feet of the product, and use low viscosity oil such as SAE-10.
Synthetic lubricants are not recommended.
BALL BEARING LUBRICATION: The Thrust Bearings (Item 5) have been packed with Chevron SRI grease, which
has been specially selected for use in the FW, LW, MW, and HW series clutches. When lubricating the Thrust
Bearings, use Chevron SRI. All other ball bearings are pre-lubricated, sealed, and require no further lubrication.
LUBRICATOR DRIP RATE SETTINGS
1. Close and disconnect the air line from the unit.
2. Turn the Lubricator Adjustment Knob counterclockwise
three complete turns.
3. Open the air line.
LUBRICATION
CAUTION
These settings are for Nexen supplied
lubricators. If you are not using a Nexen
lubricator, calibration must follow the
manufacturer's suggested procedure.
4. Close the air line to the unit when a drop of oil forms
in the Lubricator Sight Gage.
5. Connect the air line to the unit.
6. Turn the Lubricator Adjustment Knob clockwise until
closed.
7. Turn the Lubricator Adjustment Knob counterclockwise
one-third turn.
8. Open the air line to the unit.
