Disassembly (Fig. 60)
8. Remove rotor set and wearplate (18) together, and
retain the rotor set in its assembled form with the same
vane (20) to stator (21) contact surfaces. The drive link
WARNING
(13)
may come away from the coupling shaft (11) with
the rotor set and wearplate. You may have to shift the ro-
tor set on the wearplate to work the drive link out of the
rotor (19) and wearplate (Fig. 63).
If the wheel motor is not held firmly in the vise,
it could dislodge during service and cause in-
jury.
1.
Place wheel motor in a soft jawed vice with the cou-
pling shaft (11) pointed down and the vise jaws clamping
firmly on the sides of the housing (3).
2.
Scribe an alignment mark down and across the
wheel motor components from the end cover (24 or 25)
to the housing (3) for facilitating reassembly (Fig. 61).
3.
Loosen both plugs (26) on end cover (25). Remove
seven cap screws (14). Remove end cover assembly
(24
4.
or 25) and seal ring (5).
Remove commutator ring (23).
Figure 61
CAUTION
Use eye protection such as goggles when using
compressed air.
5.
Remove commutator (16) and commutator seal
(15).
Remove commutator seal from the commutator
using an air hose to blow air into the ring groove until the
commutator seal is lifted out (Fig. 62).
NOTE: The manifold (22) is constructed of plates
bonded together to form an integral component not sub-
ject to further disassembly for service. Compare config-
uration of both sides of the manifold to make sure that
the same surface is reassembled against the rotor set.
Figure 62
6.
Remove manifold (22). Remove seal rings (5) that
are on both sides of the manifold.
NOTE: The rotor set consists of the rotor (19), vanes
(20),
and stator (21). Rotor set components may be-
come disassembled during service procedures. Do not
serviced separately.
NOTE: Marking all rotor set components and mating
spline components for exact repositioning at assembly
will maximize the wear life and performance of the rotor
set and wheel motor.
7.
Mark surface of rotor (19) and stator (21) that is fac-
ing up with etching ink or a grease pencil before remov-
ing from the wheel motor. This will make sure correct
reassembly of the rotor into the stator and the rotor set
into wheel motor.
Figure 63
Sand Pro 2020/3020/5020
Page 4 – 63
Hydraulic System (Rev. A)
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