13
FORM NO. L-20016-U-0305
15. Remove the old Flat Head Machine Screws (Item 24) and
Friction Facing (Item 4) from the Piston (Item 3) (See Figure
28).
16. Remove the Shoulder Bolts (Item 5), Shoulder Bolt O-rings
(Item 22), and Compression Springs (Item 6) (See Figure
28).
17. Separate the Piston Air Chamber (Item 7) and Piston (Item
3) (See Figure 28).
18. Remove the old O-ring Seals (Items 18 and 20) from the
Piston Air Chamber (Item 7) and Piston (Item 3) (See Figure
28).
19. Remove the Retaining Ring (Item 17) (See Figure 28).
20. Press the old Ball Bearing (Item 13) out of the Piston Air
Chamber (Item 7) (See Figure 28).
21. Clean the bearing bore of the Piston Air Chamber (Item 7)
with fresh safety solvent, making sure all old Loctite
®
residue
is removed (See Figure 28).
22. Apply an adequate amount of Loctite
®
680 to evenly coat the
outer race of the new Ball Bearing (Item 13) (See Figure 28).
23. Carefully align the O.D. of the new Ball Bearing (Item 13) with
the bore of the Piston Air Chamber and press the new Ball
Bearing into place.
24. Reinstall the Retaining Ring (Item 17) (See Figure 28).
25. Clean all o-ring grooves and o-ring contact surfaces with
fresh safety solvent and lubricate the o-ring grooves and
contact surfaces with fresh o-ring lubricant.
26. Lubricate the new O-ring Seals (Items 18, 20, and 22) with
fresh o-ring lubricant and install the new O-ring Seals (See
Figure 28).
27. Press the Piston (Item 3) into the Piston Air Chamber (Item
7) (See Figure 28).
28. Apply Loctite
®
242 to the threads of the Shoulder Bolts
(Item 5); then, install the new Compression Springs (Item 6)
and Shoulder Bolts (Item 5) with new O-rings Seals (Item
22) (See Figure 28).
29. Tighten the Shoulder Bolts (Item 5) to 60 In. Lbs. [6.8 N•m]
torque (See Figure 28).
30. Install the new Friction Facing (Item 4) and tighten the new
Flat Head Machine Screws (Item 24) to 43 In. Lbs. [4.8 N•m]
torque (See Figure 28).
FIGURE 28
7
18
20
3
13
17
6
5
22
4
24
REASSEMBLY—PILOT, COUPLING, AND SHEAVE MOUNT
FWCB
WARNING
Special attention should be exercised when working with
retaining rings. Always wear safety goggles when working
with spring or tension loaded fasteners or devices.
1.
Press the Brake Assembly onto the Hub (Item 1) and reinstall
the Retaining Ring (Item 37) (See Figure 29).
2.
Slide the Brake Friction Disc (Item 2) onto the Hub and install
the Locking Nut (Item 26) (See Figure 29).
3.
Reinstall and tighten the Set Screws (Item 29) to 20 In. Lbs.
[2.2 N•m] torque (See Figure 29).
FIGURE 29
Brake
Assembly
37
1
12
26
29
NOTE
The following sections are arranged by model. Verify that you are in the correct section for your model.
®
DIST. AUTORIZADO
MEX (55) 53 63 23 31
QRO (442) 1 95 72 60
MTY (81) 83 54 10 18
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