TM-9-2320-285-24-2
TRUCK TRACTOR, YARD TYPE, 43,500 LB GVW, DED, 4X2, ARMY MODEL M878A1
TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1985
TM-9-2320-285-24-2 - Page 60 of 698
TM 9-2320-285-24-2
3-10.
STARTER MAINTENANCE (CONT)
STEP
LOCATION
ITEM
ACTION
REMARKS
TESTING
9
a.
Armature (54)
a.
Test for
Place armature in growler and
grounded
turn power on.
Touch one
winding
test probe to armature
core, the other probe to
commutator, as shown.
If
test lamp glows, the arma-
ture winding or commutator
is grounded
b.
Test for
a.
Position armature in
shorted
growler.
Turn on power.
winding
Use steel blade provided
with tester.
Hold blade
parallel with, and
touching, the armature
core segment, as shown
b.
Rotate armature slowly one
or more revolutions.
If
the armature is shorted,
the steel blade will
vibrate.
Turn power off
c.
Position armature in
growler, as shown.
Turn
power on
3-54
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