Toro Outcross 9060 Service Manual page 179

Disassembling the Hydraulic Brake (continued)
Assembling the Hydraulic Brake
Outcross 9060
18234SL Rev B
4. Remove and discard the O-rings and backup washers.
If the shaft seal or bearing are removed for any reason, both must
be replaced.
5. Press the shaft from the bearing and remove the shaft seal, retaining ring,
and bearing.
1. If previously removed, install a new bearing and retaining ring. Install a new
shaft seal in the housing with the face of the seal toward the bearing. Press
the shaft into the bearing while supporting the bearing inner race.
2. Install new piston O-rings and backup rings. The backup rings should be
installed closest to the brake discs.
Piston installation depth is critical or the piston may cock, resulting
in lose of braking. The surface of the piston at the base of the cutouts
must be flush to 3.05 (0.12 inch) below the surface of the power plate.
3. Lubricate the piston and power plate bore with clean hydraulic oil and use a
press to fit the piston into the power plate. Visually align the cutouts in the
piston with the torque pin holes in the power plate.
4. Ensure the brake discs are clean and dry and install the discs as shown.
5. Use a new gasket and fit the power plate assembly over the housing. Install
the 4 hex head screws and tighten them sequentially one turn at a time until
the power plate assembly in properly seated. Tighten the screws from 108
to 122 N∙m (80 to 90 ft-lb).
IMPORTANT
CAUTION
Page 5–83 Hydraulic System: Service and Repairs