Toro Sand Pro 5020 - Manual (Page 119)

E. Grasp the output end of coupling shaft (11) with 23. Torque both plugs from 9 to 12 ft–lb (1.2 to 1.7
locking pliers or other appropriate turning device. kg–m).
Rotate coupling shaft, drive link (13), and rotor (19)
to seat the rotor and the assembled vanes (20) into
24. Check motor shaft for rotation. Torque require to ro
-
the stator (21). This rotation should create the nec- tate shaft should not exceed 50 ft–lb (6.9 kg–m).
essary clearance to assemble the seventh or re
-
maining vanes. Use minimum force when
assembling the remaining vanes (Fig. 83).
F. Remove the two assembled bolts (14) if used to
retain stator and wear plate.
NOTE: The manifold (22) is made up of several plates
bonded together permanently to form an integral com-
ponent. The manifold surface that must contact the rotor
set has it’s series of irregular shaped cavities on the larg-
est circumference or circle around the inside diameter.
The polished impression left on the manifold by the rotor
set is another indication of which surface must contact
the rotor set.
Figure 83
15. Apply clean petroleum jelly to a new seal ring (5)
and assemble it in the seal ring groove in the rotor set
contact side of manifold (22).
16. Assemble the manifold (22) over the alignment
studs and drive link (13) and onto the rotor set. Be sure
the correct manifold surface is against the rotor set.
17. Apply clean petroleum jelly to a new seal ring (5)
and insert it in the seal ring groove exposed on the man-
ifold (22).
18. Assemble the commutator ring (6) over alignment
studs onto the manifold (22) (Fig. 84).
Figure 84
19. Assemble a new commutator seal (15) flat side up,
into commutator (16) and assemble commutator over
the end of drive link (13) onto manifold (22) with seal ring
side up.
20. Assemble new seal ring (5) into end cover (24) and
assemble end cover over the alignment studs and onto
the commutator set.
21. Assemble seven cap screws (14) and screw them
in finger tight. Remove and replace the two alignment
studs with bolts after the other bolts are in place. Alter-
nately and progressively tighten the bolts to pull the end
cover and other components into place with a final
torque of 45 to 55 ft–lb (6.2 to 7.6 kg–m) (Fig. 85).
Figure 85
IMPORTANT: Make sure springs (28), shuttle valve
(29), and ball (30) are installed into the end cover
(24) in the same position noted during disassembly.
22. Install plug (26) that is not matched marked and
new O–ring (27) into shuttle port that is not matched
marked. Install springs (28), shuttle valve (29), and ball
(30) into open shuttle port. Install remaining plug and
new O–ring.
Sand Pro 2020/3020/5020 Page 4 – 69 Hydraulic System (Rev. A)
Hydraulic Systems