Milnor 72044SR2, Mechanical Parts And Service, Page: 44 / 175

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Pellerin Milnor Corporation
How to Do a Caliper Overhaul
BNWUUM03.T03 0000277561 A.4 A.7 A.3 3/17/20 11:57 AM Released
Figure 19. The Caliper Components
The Expanded View (Shows the Piston and the O-rings)
Legend
1. The bolts to attach the caliper ( Figure 18 ,
item 9)
2. Caliper body halves ( Figure 18 , item 3)
3. Brass screw
4. Friction pad
5. Piston
6. The Piston O-ring
7. The connection O-ring and its position
8. Plug for the hydraulic inlet
9. A hydraulic inlet (connected on one cali-
per, a plug (item 8) on the other)
10. The hole in the spacer
11. Washer
12. One of the four valves to bleed the fluid
13. Nut
14. The pad thickness must be more than than
1/16 inches (2 mm) above item 3
The Caliper and the Pad
Fittings for the Hydraulic Inlet Look at the pad thickness above the
top of the screw
TIP: Hydraulic fluid flows from one caliper to the other caliper. Fluid flows through the
connection O-rings ( Figure 19 , item 7) and the hole in the spacer ( Figure 19 , item 10).
When you disconnect the calipers, hydraulic fluid can flow from the hole at the connec-
tion O-rings. Air can get in the line. After you connect the calipers, you must bleed the
system.
Drive Assemblies