Nexen BSB07 965040 - Manual (Page 9)

9 FORM NO. L-21225-F-0813
Item 6
Item 2
Item 3
Item 5
Item 4
Item 1
Item 23
Item 21
Item 8
Item 9
Item 7
Item 10
Item 14
Item 11
BEARING, O-RING, SEALS, AND SPRING ASSEMBLY
NOTE: Refer to Figures 6-9.
1. Alternately and evenly, remove the eight Socket Head
Cap Screws (Item 11) and separate the Air Chamber
(Item 6) from the Input Flange (Item 10).
2. Remove the Spring Backing Plate (Item 15), Piston
(Item 5) and 10 Springs (Item 9) from the Air Chamber
(Item 6). You may need to apply compressed air to the
air inlet to remove the Piston. Note: Only BSB 7 has
Spring Backing Plate and multiple Springs.
3. Press in on the Shaft (Item 1) to separate it from the
Ball Bearing (Item 2).
4. Remove the old O-ring Seals (Items 3, 4) from the
Piston (Item 5).
5. Press the Ball Bearing (Item 2) out of the Air Chamber
(Item 6).
6. Clean the bearing bore of the Air Chamber (Item 6)
with fresh solvent, removing old Loctite®.
7. Apply a continuous bead of Loctite® 680 (green)
around the inner circumference of the bearing bore
of the Air Chamber (Item 6).
8. Carefully align the outer race of the new Bearing (Item
2) with the bore of the Air Chamber (Item 6).
9. Supporting the Air Chamber (Item 6) and pressing on
the outer race of the new Bearing (Item 2), press the
new Bearing into the Air Chamber.
10. Visually inspect the inner diameter grooves and the
outer diameter grooves of the Piston (Item 5) for
debris. Clean as necessary.
11. Coat the O-ring contact surfaces of the Air Chamber
(Item 6), the Piston (Item 5), and the O-ring Seals
(Items 3, 4) with a thin film of O-ring lubricant and
install the new O-ring Seals.
12. Slide the Piston (Item 5) into the Air Chamber (Item
6).
13. Clean the friction surface of the Output Shaft (Item 1)
and the Air Chamber (Item 6) with solvent. Ensure that
it is clean and dry before installing the Friction Facing
(Item 8) in Step 15.
14. While supporting the inner race of the new Ball Bearing
(Item 2), press the Output Shaft (Item 1) into the new
Bearing (Item 2) and Air Chamber (Item 6).
Figure 6 BSB 2, 3, 4, and 5
Figure 7 BSB 2, 3, 4, and 5
Figure 8 BSB 7
Item 1
Item 2
Item 3
Item 4
Item 5
Item 6
Item 23
CAUTION
Working with spring or tension loaded
fasteners and devices can cause injury.
Wear safety glasses and take the
appropriate safety precautions.