ASM AllPro Mach 5400 Plus 110V, Repair And Parts Manual

Page: 14 / 40

Spin Test
14 312361L
Spin Test
See Wiring Diagrams, page 26.
To check armature, motor winding and brush electrical
continuity:
1. Relieve Pressure, page 5. Disconnect power cord
from outlet.
2. Hi-Boy Models Only - Disconnect high-pressure
hose at pump outlet (see page 11).
3. Remove two screws (4) and shroud (12).
4. Remove drive housing (29) (see page 13).
5. 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 25.
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 16.
3. If still uneven or no resistance, replace motor, page
25.
4. Reattach motor connector (H).
5. Replace drive housing (see page 13).
6. Replace shroud (12) and two screws (4).
7. Hi-Boy Models Only - Connect high-pressure hose
at pump outlet (see page 12).
12
4
H
ti5638a