Nexen BD 933617 - Manual (Page 8)

8
FORM NO. L-20271-F-0609
NOTE
The tops of the Sleeve Bearings (Item 14) must be flush
with the top of the Main Frame (Item 1) and the bottoms
of Sleeve Bearings (Item 30) must be flush with the
bottom of the Main Frame (Item 1).
12. Press the old Sleeve Bearings (Item 15) out of the Shoes
(Item 3) (See Figure 10).
NOTE
Sleeve Bearings (Item 15) must be pressed from both
sides to be flush with the recess in the Brake Arm.
13. Press new Sleeve Bearings (Item 15) into the Brake Arm
(Item 2) (See Figure 10).
14. Slide the Brake Arms (Item 2) back into the Main Frame
(Item 1) (See Figure 10).
15. Install the Pivot Pins (Item 7) (See Figure 10).
16. Install the Pivot Pin Retaining Plate (Item 6) (See
Figure 10).
17. Install the four Cap Screws (Item 24) to secure the Pivot
Pin Retaining Plate (Item 6) (See Figure 10).
18. Tighten the four Cap Screws (Item 24) to 40-50 In. Lbs.
[4.5‑5.6 N•m] torque.
NOTE
Two Belleville Disc Springs (Item 29) are compressed
between the Brake Arm (Item 2) and the Shoe (Item 3).
When the Shoe is removed, the Belleville Disc Springs
will fall free from the Brake Arms.
19. Slide the Friction Facings (Item 4) and Shoes (Item 3)
over the Belleville Disc Springs (Item 29) and onto the
Brake Arms (Item 2); then, install the Detent Pins (Item
16) (See Figure 10).
20. Install the Spring Clips (Item 5) and Extension Springs
(Item 17) onto the Brake Arms (Item 2) (See Figure 10).
21. Screw the Actuator back onto the Brake Arm (Item 2) as
far as possible (See Figure 10).
22. Loosely attach the Spanner Nut (Item 12).
23. Perform Friction Facing adjustment (See
FRICTION
FACING CLEARANCE ADJUSTMENT).
HIGH PV SLEEVE BEARINGS
NOTE
This BD Caliper Brake is spring engaged and
hydraulically disengaged. To release the spring
pressure, remove the Vent, then lubricate and insert a
Grade 5, 3/8-16 x 9'' Threaded Rod into the back of the
Actuator; then, using a Flat Washer and Nut, tighten
the Nut to release the spring pressure (See Figure 4).
A Manual Release Kit (Product No. 933596) containing
these items is available from Nexen.
1. Loosen the Spanner Nut (Item 12) (See Figure 10).
2. Remove the Actuator from the Brake Arm (Item 2) (See
Figure 10).
3. Remove the Extension Springs (Item 17) and Spring Clips
(Item 5) from the Brake Arms (Item 2) (See Figure 10).
4. Remove the Detent Pins (Item 16) from the Brake Arms
(Item 2), Friction Facings (Item 4), Shoes (Item 3), and
Belleville Disc Springs (Item 29) (See Figure 10).
NOTE
Two Belleville Disc Springs (Item 29) are compressed
between the Brake Arm (Item 2) and the Shoe (Item 3).
When the Shoe is removed, the Belleville Disc Springs
will fall free from the Brake Arms.
5. Slide the Friction Facings (Item 4) and Shoes (Item 3) off
of the Brake Arms (Item 2) (See Figure 10).
6. Remove the four Cap Screws (Item 24) securing the Pivot
Pin Retaining Plate (Item 6) (See Figure 10).
7. Remove the Pivot Pin Retaining Plate (Item 6) (See Figure
10).
8. Press the Pivot Pins (Item 7) out of the BD Caliper Brake
(See Figure 10).
9. Slide the Brake Arms (Item 2) out of the Main Frame
(Item 1) (See Figure 10).
10. Press the old Sleeve Bearings (Items 14 and 30) out of
the Main Frame (Item 1) (See Figure 10).
11. Press new Sleeve Bearings (Items 14 and 30) into the
Main Frame (Item 1) (See Figure 10).
FIGURE 10
Actuator
18
12
2
2
9
8
5
17
29 15
29
24
6
7
14
1
16
30
4
3