
Spin Test
20
332763A
Spin Test
See
Wiring Diagram
, page 32.
To check armature, motor winding and brush electrical
continuity:
1.
Relieve pressure
, page 9. Disconnect power cord
from outlet.
2.
Remove two screws (30) and shroud (29).
3.
Remove
Drive Housing
(5), see page 19.
4.
Disconnect motor connector (H).
Armature Short Circuit Test
Quickly turn motor fan by hand. If motor coasts two or
three revolutions before complete stop, there are no
electrical shorts. If motor does not spin freely, armature
is shorted. Replace
Motor
, page 31.
Armature, Brushes, and Motor Wiring Open
Circuit Test (Continuity)
1.
Connect red and black motor leads with test lead.
Turn motor fan by hand at about two revolutions per
second.
2.
If uneven or no resistance, check for missing brush
caps, broken brush springs, brush leads, and worn
brushes. Repair as needed, page 22.
3.
If still uneven or no resistance, replace
Motor
, page
31.
4.
Reattach motor connector (H).
5.
Install
Drive Housing,
see page 19.
6.
Install shroud (29) and two screws (30).
TIA
29
30
H
ti5638a
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