Nexen FMCBES-625 801652 User Manual
Page 11
11
FORM NO. L-20178-N-0513
PARTS REPLACEMENT-MALE PILOT BEARINGS AND O-RING SEALS
23
Apply a thin film of
NEVER-SEEZ
®
to the
spline of the Stub Shaft
(Item 24).
Align the Slotted
Spring Pin with the
hole in the Piston.
18
8/14
FIGURE 10
22
24
18
28
FIGURE 9
20
20
13. Apply a thin film of NEVER-SEEZ
®
to the spline of the
Stub Shaft (Item 24); then, align the Pin on the Male
Pilot with the hole in the Piston and slide the Male Pilot
and Stub Shaft into the FMCBES (See Figure 10).
14. Apply a drop of Loctite
®
242 to the threads of the four
Socket Head Cap Screws (Item 14).
15. Reinstall the four Socket Head Cap Screws (Item 14),
securing the Male Pilot (Item 18) to the Air Chamber
(Item 13) (See Figure 10).
16. Alternately and evenly tighten the four Socket Head
Cap Screws (Item 14) to the recommended torque
(See Table 6).
TABLE 6
S
E
B
C
M
F
L
E
D
O
M
E
U
Q
R
O
T
D
E
D
N
E
M
M
O
C
E
R
S
W
E
R
C
S
P
A
C
D
A
E
H
T
E
K
C
O
S
)
4
1
m
e
tI
(
5
2
6
m]
•
N
4
3
-
6
2
[
.
s
b
L
-.
n
i
1
0
3
-
2
3
2
)
4
1
m
e
tI
(
5
7
8
m]
•
N
4
3
-
6
2
[
.
s
b
L
-.
n
i
1
0
3
-
2
3
2
)
4
1
m
e
tI
(
5
2
1
1
m]
•
N
4
3
-
6
2
[
.
s
b
L
-.
n
i
1
0
3
-
2
3
2
)
4
1
m
e
tI
(
5
7
3
1
m]
•
N
5
7
-
7
5
[
.
s
b
L
-.
n
i
2
6
6
-
9
0
5
1. Remove the O-ring Seals (Items 22 and 23) from the
Male Pilot (Item 18) (See Figures 9 and 10).
2. Remove the Retaining Ring (Item 28) from the Stub
Shaft (Item 24) (See Figure 9).
3. Press the Stub Shaft (Item 24) out of the Male Pilot
(Item 18) (See Figure 9).
NOTE
One old Bearing (Item 20) will remain attached to
the Stub Shaft (Item 24) (See Figure 9).
4. Press the old Bearing from the Stub Shaft (Item 24)
(See Figure 9).
5. Press the other old Bearing out of the Male Pilot (Item
18) (See Figure 9).
NOTE
It is not necessary to remove the Retaining Ring
from the inside of the Male Pilot.
6. Clean the bearing bore of the Male Pilot with fresh
safety solvent, making sure all old Loctite
®
residue is
removed.
7. Apply an adequate amount of Loctite
®
680 to evenly
coat the outer race of one new Bearing; then, press it
into the output side of the Male Pilot until it is seated
against the Retaining Ring inside the Male Pilot (See
Figure 9).
8. Press a new Bearing onto the Stub Shaft (Item 24)
(See Figure 9).
9. Apply an adequate amount of Loctite
®
680 to evenly
coat the outer race of the second new Bearing.
10. Carefully align the outer race of the new Bearing with
the bore of the Male Pilot; then, pressing on the outer
race of this Bearing and supporting the inner race of
the new Bearing already in the Male Pilot, press the
new Bearing and Stub Shaft into the Male Pilot until it
is seated against the Retaining Ring inside Male Pilot
(See Figure 9).
11. Reinstall the Retaining Ring (Item 28) (See Figure 9).
12. Coat the O-ring contact surfaces of the Male Pilot,
Piston, and the new O-ring Seals (Items 22 and 23)
with a thin film of fresh O-ring lubricant and install the
new O-ring Seals onto the Male Pilot (See Figures 9
and 10).
CAUTION
Working with spring loaded or tension
loaded fasteners and devices can cause
injury. Wear safety glasses and take the
appropriate safety precautions.