Toro Sand Pro 5020 - Manual (Page 116)

14. If the housing (3) has passed inspection to this
point, inspect outer bearing (2), inner bearing (10),
thrust washers (8), and thrust bearing (9). Bearing roll-
ers must be firmly retained in the bearing cages but must
rotate and orbit freely. All rollers and thrust washers
must be free of peening and corrosion. If any bearing
or thrust washer does not pass inspection, replace
the housing (3) as a complete assembly (Fig. 71).
Assembly (Fig. 60)
1. Lubricate all seals and seal rings with clean hydrau-
lic oil before assembly.
Figure 71
when using any solvent. Even a small explo-
sion or fire could cause injury or death.
CAUTION
Figure 72
WARNING
Since they are flammable, be extremely careful
Use eye protection such as goggles when using
compressed air
2. Wash all parts in a clean petroleum–based solvent
before assembly. Blow parts dry with compressed air.
3. Press a new dirt and water seal (1) into the housing
(3) outer bearing counterbore. Press seal in with the lip
facing out and until the seal is 0.020 inch (0.51 mm) be-
low the end of housing.
4. Place housing (3) into a soft jawed vise with the cou-
pling shaft bore down; clamp against the mounting
flange.
IMPORTANT: Early model wheel motors that do not
have back–up washer (6), assemble with a new
back–up washer (4), new back–up washer (6), and
Figure 73
new seal (7).
5. A housing (3) that does not require replacement will
require that the two thrust washers (8) and thrust bear-
ing (9) be unseated and vertical to the counterbore and
the new back–up washer (4), new back–up washer (6),
and new seal (7) be worked around the thrust bearing
package and placed into their respective counterbores
(Fig. 73 and 72). The seal lip must face out of the seal
counterbore and toward the inside of wheel motor (Fig.
74). Be sure the thrust bearing package is reseated cor-
rectly after assembly of the new seal and back–up wash-
ers.
Figure 74
Hydraulic System (Rev. A) Page 4 – 66 Sand Pro 2020/3020/5020