Milnor 72044SR2, Mechanical Parts And Service, Page: 45 / 175

Pellerin Milnor Corporation
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You must have the necessary kit for the overhaul of your machine. Refer to the brake parts docu-
ment in your machine's manual.
1. Remove power from the machine (see above notice).
2. Get access to the caliper halves (see Section : How to Do a Friction Pad Replacement, page
40 ).
3. Do an overhaul on each caliper:
a. Remove and discard the connection O-rings ( Figure 19 , item 7) on the caliper bodies.
b. Apply compressed air to the fitting for the hydraulic inlets (see Figure 19 , item 8) to push
the pistons out.
c. Replace the piston O-rings ( Figure 19 , item 6).
d. Put the pistons in the caliper body. Carefully tap the pistons with a wood or rubber ham-
mer to install it.
e. Replace the connection O-rings. ( Figure 19 , item 7)
f. Replace the friction pads (see Section : How to Do a Friction Pad Replacement, page 40 ).
4. Replace the caliper halves as specified in Section : How to Do a Friction Pad Replacement,
page 40 .
5. Bleed the brake circuit (see Section : How to Change Hydraulic Fluid and Remove (Bleed)
Air from the Brake Circuit , page 43 ).
6. Supply electrical power to the machine.
How to Change Hydraulic Fluid and Remove (Bleed) Air from
the Brake Circuit
BNWUUM03.T04 0000277589 A.4 A.7 A.3 3/17/20 11:57 AM Released
Risks and Precautions
WARNING:
Risk of injury — Machine power must be on for these procedures.
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Stay away from operating mechanisms.
CAUTION:
Risk of injury and damage — This procedure releases pressurized brake
fluid.
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Keep brake fluid out of your eyes and mouth. Wear eye protection.
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Follow procedures carefully to prevent damage to the face of the disk
or the pistons.
Drive Assemblies